File:Bulletin - United States National Museum (1967) (14761413266).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

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aced, plumose setae. Outer plate of maxilliped extending nearlyto or as far as apex of 1st palpal segment. Lower lip with smallinner lobes. Gnathopod 1: posterior angle of propod with 3 to 5 (usually 4)large, unequal spines on outside, 4 or 5 smaller spines on inside;dactyl claw rather short. Gnathopod 2: posterior angle of propodwith 1 large spine on outside, 2 or 3 small spines on inside; posteriormargin with 6 to 8 sets of setae; dactyl claw rather short. Coxalplates of pereopods 2 and 3 marginally with 3 spinules and up to 7or 8 setae each; that of pereopod 4 with 9 or 10 marginal setae. Pere-opods 5 and 6, bases broader proximally than distally. Pereopod 7slightly longer than pereopod 6, about 20 percent longer than pere-opod 5; basis about as broad proximally as distally. Dactyls ofpereopods 5-7 about 30 percent as long as corresponding propods.Gills absent on 7th pereopods and 1st pleonites; all other gills present. Abdominal slide plates with posterior margins convex and armed
Text Appearing After Image:
Figure l.—Stygonedes emarginatus (Hubricht). Female (12.00 mm), Court Street Cave,W. Va.: a, lower lip; h, c, right and left mandibles; d, maxilliped; e, maxilla 2;/, maxilla 1;g, pleopod 1; h, coxal plate of pereopod 3; i, pereopod 4;;, uropod 3. Male topotype(9.75 mm), Organ Cave, W. Va.: k-m, uropods 1,2,3; n, telson; o, abdominal side plates;p,q, antennae 1,2; r,s, gnathopods, 1,2; f-p, pereopods 5,6,7. SUBTERRANEAN AMPHIPOD STYGONECTES 25 with 1 setae each; posterior corners distinct, acute to subacute;ventral margins of plates 2 and 3 with 3 spines each. Pleopod 1,inner ramus a little longer than pedmicle. Uropod 1 with 35 to 40spines; outer ramus about 80 percent as long as inner ramus, about2/3 as long as peduncle. Uropod 2 with 20 to 25 spines; outer ramusabout 2/3 the length of inner ramus which is about equal to pedmiclein length. Uropod 3: peduncle armed laterally with 2 or 3 spinules;ramus with 2 or 3 spines apically. Apical lobes of telson armedwith 4 to 6 spines each

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