96 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



Key to the Pacific Species of Inachoides 



la. Carapace smooth and bare. Postorbital spine inconspicuous, an- 

 tennal spines divergent. Tip of male first pleopod sharply trian- 

 gular. A small species laevis 



lb. Carapace tuberculate and granulate. Postorbital spine promi- 

 nent, antennal spines incurving. Tip of male first pleopod 

 broadly rounded. A moderately large species . microrhynchus 



Inachoides microrhynchus Milne Edwards and Lucas 

 Plate E, Fig. 9; Plate 6, Fig. 3 



Xiphtis margaritifere Eydoux and Souleyet, 1842 (or 1843), pi. 1, figs. 



1-6. 

 Inachoides microrhynchus Milne Edwards and Lucas, atlas, 1842, pi. 4, 

 figs. 2, 2a-m; 1843, p. 5. Eydoux and Souleyet, 1844 (or 1845), 

 p. 219. Miers, 1879c, p. 646; 1881, p. 65. Cano, 1889, pp. 98, 171. 

 Rathbun, 1910, pp. 533, 570, pi. 36, fig. 1 ; 1925, p. 60, pi. 22, 

 figs. 1, 2; text-fig. 16. Garth, 1957, p. 18. 

 Inachoides micrornynchus [for microrhynchus], Nicolet, 1849, p. 126. 

 Inachoides inornatus A. Milne Edwards, 1873a, p. 253 (77) ; type 

 locality, "les lies Viti" [Valparaiso, fide Ortmann] ; type if extant, 

 one of two females in Museum Godeffroy, Hamburg. Ortmann, 

 1893, p. 38. Rathbun, 1910, p. 570. 

 Type: Male holotype in Paris Museum, length 30 mm, width 21 mm. 

 Type locality: Coast of Chile. 



Localities subsequently recorded, with collectors: Peru: Sechura Bay, 

 5-6 fathoms, R. E. Coker (Rathbun, 1910) ; Paracas Bay, Hassler 

 (Rathbun, 1925); Chile: Cobija, Bonite (Eydoux and Souleyet); 

 Coquimbo (Miers, 1881) ; Caldera, Hassler (Rathbun, 1925) ; Valpa- 

 raiso (Ortmann), also Hassler (Rathbun, 1925) ; Puerto Lap. [Puerto 

 Lagunas?], Chonos and Chiloe, Vet tor Pisani (Cano). 



Atlantic analogue: None. A Pacific south temperate species. 

 Diagnosis: Carapace with tubercles and granules surmounting 

 gastric, cardiac, and branchial regions. Postorbital spines large, anterior 

 margins horizontal. Antennal spines straight or incurving at tips. Pollex 

 of male chela not bent, a tooth at midpoint. Tip of male first pleopod 

 broadly rounded. Size large as compared to Inachoides laevis. 



Description: The carapace, of a clear bottle-green, armed with a 

 granulous rostrum, slightly swollen at its extremity and presenting a well 

 marked depression between the ocular cavities; these latter with their 



