Nd the posterior corners. Sternaspis PRIMA-1 chemical information costata is exclusive among the species
Nd the posterior corners. Sternaspis costata is unique among the species inside the genus simply because its shield fan is lowered along its median line, especially in bigger specimens, such that the lateral fan portions are longer, reaching the posterior corners, however the median portion is very brief, as if having a wide, deep median notch. Distribution. Southern Sakhalin Island (Russia), Japan, and PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/11836068 the Philippines, 2070 m depth. The record for estuarine environments in India (Southern 92:6495, Pl. 20, fig. 5a, b) is questionable; the illustration resembles the species but there are actually some subtle variations. Thus, we’re doubtful in regards to the distribution extending to estuarine waters within the Bay of Bengal. Sternaspis fossor Stimpson, 853, restricted http:speciesid.netwikiSternaspis_fossor Figures B, 9 Sternaspis fossor Stimpson, 853:29, fig. 9; Verrill 873:606, Pl. 4, fig. 74; Webster and Benedict 884:725, 887:32; von Marenzeller 890:five, Pl. , fig. 4A ; Moore 909:44; Hartman 944:82, Pl. 33, fig. 5; Hartman 965:92. Sternaspis scutata: Pettibone 954:3090, fig. 35 a, b (partim, non Ranzani 87) Variety material. Northwestern Atlantic Ocean, Canada. Neotype (USNM 5543), 88 km E Cape Sable, Nova Scotia, 53 m, mud, 6 Oct. 909, O. Bryant, coll. Added material. Canada, Brunswick. spec. (HMCS 9953670), Bocabec Bay, 450’N, 672’W, 22 m, 20XII976. spec. (HMCS 995367), L’Etang Estuary, 454’30″N, 667’39″W, 20VIII975. 37 spec. (HMCS 9953672), Letite Passage, 453’N, 665’W, 73 m (in codfish stomach), 7V976. five spec. (HMCS 9953673), Passamaquoddy Bay, Loring Cove, 456’N, 669’W, 274 m, 22V973. two spec. (HMCS 9953676), Bocabec Bay, 450’N, 672’W, 3III977. spec. (HMCS 9953677), Passamaquoddy Bay (WolvesLepreau), 966. four spec. (USNM 7872), East of Grand Manan, 08 m, mud, 872. U.S.A. Three spec. (ANSP 247), off Newport, Rhode Island. Description. Neotype (USNM 5543) full, most body papillae eroded but transverse rows nevertheless noticeable; introvert exposed (Fig. 9C); 9.7 mm extended, three.5 mm wide, three segments. Physique colour in alcohol normally tan to light brown, sometimes ashen or cinereous (Fig. 9A, C). Cuticular papillae evenly distributed more than many of the physique particularly posteriorly, beginning at segment 8. Single transverse dorsal rows of clusters of papillae per segment, specifically towards posterior finish. Very first seven segments commonly significantly cleaner and translucent, specifically in smaller men and women. Physique as much as 5 mm extended, 8 mm wide, about three segments.Revision of Sternaspis Otto, 82 (Polychaeta, Sternaspidae)Figure 9. Sternaspis fossor Stimpson, 853 A Juvenile (HMCS 9953670), anterior end exposed, ventral view B Yet another specimen (HMCS 995367), ventrocaudal shield, frontal view C Neotype (USNM 5543), anterior end exposed, ventral view D Identical, ventrocaudal shield, frontal view e Ventrocaudal shields of 3 other specimens (USNM 7872). Bars: A, F mm B 0.six mm C, E 0.8 mm D 0.7 mm G .2 mm.Prostomium hemispherical, opalescent, with no eyespots, minutely granular in look. Peristomium rounded, 
with no papillae, slightly raised near mouth. Mouth slightly oval, entirely covered by papillae, extends from prostomium pretty much to edge of segment 2. 1st three chaetigers with 62 bronze, widely separated, slightly falcate hooks per ramus, with subdistal dark regions, transparent in juveniles, opaque in larger specimens (Fig. 9C). Genital papillae protrude ventrally from intersegmental groove between segments 7 and 8. Preshield region with 7 segments, with compact, quick fascicles of fine ca.
