File:Bulletin - United States National Museum (1967) (14597748049).jpg

Identifier: bulletinunitedst2591967unit (find matches)
Title: Bulletin - United States National Museum
Year: 1877 (1870s)
Authors: United States National Museum Smithsonian Institution United States. Dept. of the Interior
Subjects: Science
Publisher: Washington : Smithsonian Institution Press, (etc.) for sale by the Supt. of Docs., U.S. Govt Print. Off.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
gnathopod propod, shorter dactyl claws of gnathopods,presence of rastellate setae on segment 5 of both gnathopods, andlarger coxal gills. Further differentiated from other species of theemarginatus subgroup by having up to 18 apical spines on telson.Known only from a single male. Length, 14.25 mm. Male (holotype): Antenna 1, 50 percent as long as body, about40 percent longer than antenna 2; primary flagellum with 28 segments;accessory flagellum reaching about 1/2 the length of 2nd primaryflagellar segment. Antenna 2: pedimcular segments 4 and 5 setose,ventral margin of 4 with a number of long, bristle-like setae; flagellumwith 7 segments. Mandibular palpal segment 3 with 11 long setae;segment 2 with 10 to 13 setae. Maxilla 1, inner plate with 6 plumosesetae apically. MaxUla 2, inner plate with 8 long, obliquely placed,plumose setae. MaxUliped, outer plate not extending as far as apexof 1st palpal segment. Lower lip, inner lobes distinct but small. 34 U.S. NATIONAL MUSEUM BULLETIN 259
Text Appearing After Image:
Figure 6.—Stygonedes stellmacki, new species. Male holotype (14.25 mm), Millers Cave,Pa.: a,b, gnathopods 1,2; c,d, antennae 1,2; e, lower lip;/, left mandible; g, dentate partof right mandible; h, abdominal side plates; i, coxal plate of pereopod 3;j-ni, pereopods4,5,6,7; n-p, uropods 1,2,3; q, telson. SUBTERRANEAN AMPHIPOD STYGONECTES 35 Gnathopod 1: propod palmar margin long, convex, armed with adouble row of about 15 rather irregular-sized spine teeth; posteriorangle with 2 large spines, 3 or 4 smaller spines and 2 setae on outside,7 small spines on inside; posterior margin convex, distally with 2 or3 sets of setae, proximally without setae; superior lateral setae m 2sets, inferior lateral setae doubly inserted; naU of dactyl very short;segment 5 with 2 rastellate setae on posterior margin. Gnathopod 2:propod palmar margin convex, armed with a double row of about18 irregular sized spine teeth; posterior angle with 1 large spine, 2smaller spines and several long setae on outside,

Note About Images