File:Bulletin - United States National Museum (1967) (14761436916).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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pring opening under a rock. Distribution and ecology.—This species is known only from itstype locality but may be expected elsewhere in subterranean watersin the vicinity of New Braunfels, Tex. Brood plates on the holotypefemale appeared to be nearly mature in regard to size but lackedmarginal setae, although marginal serrations were present. Remarks.—It is a pleasure to name this rare species after Mr.Stewart B. Peck, who collected the first known specimen and whohas materially assisted in the collection of other subterraneanamphipods during the past several years. Stygonectes dejectus, new species Figure 29 Stygonectes flagellatus (Benedict).—Hutaricht, 1943, p. 705 (in part).Stygonectes species.—Reddell, 1965, p. 160 (in part).—Holsinger, 1966, p. 119 (inpart). Material examined TEXAS.—Kendall Co.: Cascade Caverns, female holotype and female paratype,L. Hubricht and J. Mackin, May 15, 1940 (USNM). (Holotype partially on slidemount.) 120 U.S. NATIONAL MUSEUM BULLETIN 259
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Figure 29.—Slygonedes dejecius, new species. Female liolotype (8.25 mm), CascadeCaverns, Tex.: a,b, gnathopods 1,2; c, coxal plate of pereopod 3; d-g, pereopods 4,5,6,7;h,i, antennae 1,2;;, telson; k,l, uropods 1,2; m,n, 3rd uropods; o, abdominal side plates. SUBTERRANEAN AMPHIPOD STYGONECTES 121 Diagnosis.—Distinguished from S. pecki, to which it appears to berather closely allied, by proportionately shorter 1st antenna, smallerspine teeth on gnathopod propods, fewer spine teeth on propod ofgnathopod 2, proportionately longer dactyls and broader bases ofpereopods 5-7, proportionately longer and more spinose outer ramusof 1st uiopod, proportionately shorter and less spinose outer ramus of2nd uropod, and 1 or 2 less apical spines on ramus of 3rd mopod.Largest female, 8.25 mm.; male unknown. Female.—Antenna 1 about 50 percent as long as body, about50 percent longer than antenna 2; primary fiagellum with up to 22segments; accessory fiagellum extending about 1/2 the distance ofprima

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