THE SPIDER CKABS OF AMERICA 



29 



ACHAEOPSIS THOMSONI (Norman) 



Plate 10 



Dorynchus thomsoni Norman, in Wyville-Thomson's Depths of the Sea, 



1873, p. 175, text-fig. 34 (on p. 174), (type-locality, deep water between 



the Faroes and Scotland; type in Brit. Mus.). — Rathbun, Bull. Lab. 



Nat. Hist. State Univ. Iowa,' vol. 4, 1898, p. 254. 

 Lispognaihus furcillaius A. Milne Edwards, Crust. Reg. Mex., 1880, pp. 



349 and 360 (index), pi. 31 A, figs. 4 and 4a (type-locaUty, Grenada, 291 



fathoms; type in Paris Mus.). 

 Lispognathus furcatus A. Milne Edwards, Crust. R^g. Mex., 1880, p. 364 



(index); Bull. Mus. Comp. Zool., vol. 8, Dec. 28, 1880, p. 9.— Smith, 



Proc. U. S. Nat. Mus., vol. 6, 1883, p. 12. 

 Lispognaihus (Dorynchus) thomsoni A. Milne Edwards, Comptes Rendus 



Acad. Sci. Paris, vol. 93, 1881, p. 932; transl. in Ann. Mag. Nat. Hist., 



ser. 5, vol. 9, 1882, p. 42; Arch. Miss. Scient. et Litt., ser. 3, vol. 9, 1882, 



pp. 16 and 39. 



Fig. ".—ACHAEOPSIS thomsoni, station 951, Fish Hawk, X 2.4. a. Doesal view. 6. Carapace in 



PROFILE. (After Smith.) 



Lispognaihus thomsoni Norman, Museum Normanianum, Crustacea, 1886, 

 p. 6. — MiERS, Challenger Rept., Zool., vol. 17, 1886, p. 28, pi. 5, figs. 

 2-2c. — A. Milne Edwards and Bouvier, Exp^d. Sci. Travailleur et 

 Talisman, Crust. D6c., 1900, p. 148, pi. 3, fig. 8 (color.); pi. 21, figs. 8-14, 

 and synonymy. — Doflein, Brachyura Valdivia, 1904, p. 75. 



Achaeopsis thomsoni JIathbun, Trans. Linn. Soc. London, ser. 2, vol. 14, 

 1911, p. 248; Biol. Results "Endeavour", vol. 5, part 1, 1918, p. 4. — 

 Stebbing, Trans. Roy. Soc. Edinburgh, vol. 50, 1914, p. 258. 



Diagnosis. — Two slender rostral horns. Carapace spined. Fin- 

 gers not gaping. Spine at end of merus of legs. 



Description. — Carapace slightly pubescent; two median spines, 

 cardiac and gastric; two branchial spines, the anterior sometimes 



