THE SPIDER CRABS OF AMERICA 



203 



CHOKILIA LONGIPES Dana 

 CHORILIA LONGIPES TURGIDA Rathbun 



Plate 224, figs. 1-3; plate 225 



Chorilia longipes Dana, Amer. Journ. Sci., ser. 2, vol. 11, 1851, p. 269 



(tj^pe-locality, ad oras Oregonense^ type not extant); U. S. Expl. Exped., 



vol. 13, Crust., pt. 1, 1852, p. 91; atlas, 1855, pi. 1, fig. 5a-d. 

 Hyastenns {Chorilia) longipes Miers, Journ. Linn. Soc. London, vol. 14, 



1879, p. 658. — Holmes, Occas. Papers California Acad. Sci., vol. 7, 1900, 



p. 33. 

 Hijastenus (Chorilia) japonicus Miers, Proc. Zool. Soc. London, 1879, p. 27, 



pi. 1, fig. 2 (type-locality, lat. 41° 40' N., long. 141° 10' E., 100 fathoms; 



type in Brit. Mus.). ^ 



Hyastenus longipes Miers, Challenger Rept., Zool., vol. 17, 1886, p. 56. — 



Rathbun, Proc. U. S. Nat. Mus., vol. 16, 1893, p. 85, pi. 7; vol. 17, 1894, 



p. 62, pi. 1, fig. 5. 

 Hyastenus japonicus Miers, Challenger Rept., Zoo]., vol. 17, 1886, p. 56. 

 Chorilia longipes turgida Rathbun, Proc. U. S. Nat. Mus., vol. 64, art. 14, 



1924, p. 3 (type-locality, off San Diego, 359 fathoms; holotype, male, 



Cat. No. 15500, U. S. N. M.). 



Diagnosis. — Hepatic spine when present 

 smaller than lateral branchial spine. Preocii- 

 lar spine directed obliquely outward. Spines 

 and tubercles of carapace numerous. 



Description of typical form. — Carapace 

 covered with numerous tubercles and some 

 short unequal spines; the largest spine is 

 that at the widest part of the carapace on 

 the margin of the branchial region. Other 

 important spines are two median gastric, 

 which with two smaller lateral spines or 

 tubercles form a rhomb. A blunt ridge or 

 tubercle on hepatic region. Cardiac region 

 at its narrowest, more than half its greatest 

 width. Two median cardiac tubercles, one 



larger intestinal tubercle. Rostrum about half (it may be more or 

 less than half) as long as remainder of carapace; horns gradually 

 tapering, acuminate. A slender preocular spine. 



Two spines on outer margin of basal antennal segment, followed 

 posteriorly by a triangular tooth situated just outside the segment. 

 Merus of outer maxillipeds with concave surface and prominent outer 

 angle; ischium with a broad and deep, longitudinal sulcus. 



Chelipeds massive; merus prismatic, rough with granules, and 

 with tubercles and spines arranged in rows. Carpus similarly rough, 

 inner margin lamellate, the lamella bearing a backward-pointing 

 lobe at the proximal end. Manus compressed, upper edge thin. 

 Fingers narrow, gaping in their basal half or two-thirds; dactylus as 



Fig. 81.— Chorilia longipes 

 (31637), maxilliped, x 4.3 



