1894. rROCEEDINGS OF THE NATIONAL MUSEUM. 61 



ANAMATHIA HYSTRIX, ( St i inpsoii j. 

 Amalhia lujHtrix, Stimpsox, Bull. Miis. Comp. Zool., ii, p. 124, 1870. — A. Milnk- 



Edwauos, op. cit., pp. 134, 200, pi. xxviii, fij^. 1, 1879; Bull. I\Ius. Comp. 



Zool., VIII, p. 2, 1880. 

 Anamathia hystrix, Smith, Rej^t. U. S. Fish CJoinuir. for 1885, p. 626 (1887' 



Briefly cliaracterized by Stiinpsou as bearing a. <']oso resemblance to 

 A. ri^soana, but diifering in liaviug- four instead of three spines on the 

 gastric region. The specimen at hand is the same species as that 

 figured by A. Milne-Edwards, but difters in having much longer spines 

 and in the greater divergence of the rostral horns. 



Locality. — Two and a half miles northwest of Havana light, ."^87 

 fathoms, coral, temperature 49^, April 30, 1881, station 2152, steamer 

 Albatross; one immature female (()!>10). 



Measurements. — Length, measured from between rostral horns, 16 

 mm.; length of horns, 17.5; width without spines, 12; width with 

 spines, 27; distance between tips of horns, 13. 



ANAMATHIA UMBONATA, (St imp sou). 

 I'late I, Figs. 1-3. 

 Scyra nmbonata, Stimpson, Bull. Mus. Comp. Zool., ir, p. 115, 1870. — A. Milxe- 

 Edwauds, Crust, du Mexique, p. 87, 1875, pi. xxxi a, fig. 5, 1880; Bull. Mus. 

 Coiup. Zool., VIII, p. 2, 1880. 

 Scyramaihia umhonata, A. MiLXE-EDWAin>s, Couiptes Rendus, xci, p.356, 1880. 

 (See Sars, Den Norske Nordliavs-Expcdition, xiv, Crustacea, i, p. 7, 1885; 

 also Smith, Rept. U. S. Fish Commr. for 188i, p. 625, 1887). 



At Station 2415, off Georgia, were found four specimens of Stimpson's 

 Scyra umhonata. The protuberances of the carapace are as described 

 by him. The rostrum is composed of two slender divergent horns. The 

 basal auteunal joint is concave beneath, rather narrow and nnarmed, 

 except for the blunt tooth at the antero-external angle. The surface is 

 covered with a dense coat of broad seta' similar to those described by 

 Sars as occurring on Scyramathia carpenteri. The legs are bordered by 

 longer club-shaped seta', while the gastric region and the margins of 

 the rostrum and branchial regions are furnished with long slender -hairs 

 curved at the tips. There is a prominent pra'orbital spine and a i)ost- 

 orbital lobe. 



The four specimens in the haul are alike in all essential particulars. 

 Three are females, two of them bearing eggs, and the fourth is a s.nall 

 male. In the latter the rostral horns are more divergent. The largest 

 female has a total length of 29 mm. 



Three other specimens occur at station 2()08, oft' Fernauduia, Florida. 

 The ambulatory legs of all are longer and more cylindrical than in the 

 individuals from station 2415. One (which I will call A) is a male, 

 26.5 mm. long. This also is a typical umhonata as regards the orbits and 

 ornamentation of the carapace, and is apparently mature, thechelipeds 

 being elongate, about li times the length of the carapace, the propo- 

 dns much longer than the merus and strong, its margins thin and sub- 

 parallel ; fingers gaping for their basal half, dactylus with a basal tooth. 

 Ambulatory legs with the club-shaped seta*, reduced in size. 



