OXYSTOMATOUS AND ALLIED CRABS OF AMERICA 263 



the one at the exterior edge of orbit is largest. Carapace much higher 

 or thicker in front, especially at the bend, than posteriorly. Sternum 

 smooth, concave at middle; genital openings of female lunate, near 

 together on sternum. 



Eyes small on thick, short stalks; orbits looldng forward. Pedicels 

 of antennules large, longer than ej'estalks, rather stout, near together, 

 spinulous distally, with about three longer terminal spinules; remain- 

 ing articles small, folding vertically, tips reaching but little beyond 

 eyes. Antennae small, nbout as long as eyestalks. Outer maxilhpeds 

 with merus short and broad, with a decided notch on inner distal 

 edge at articulation of palp ; ischium broader than long, with a rounded 

 or semicircular lobe on inner margin; exognath small and short; the 

 large palps occupy about all the space to bases of antennules. The 

 anterior lobe of sternum separates the bases of the maxiHipeds. Legs 

 and maxillipeds very hairy. 



Chelipeds small, smaller than first ambulatory legs; hairy; chelae 

 small, with simple, acute digits. Ambulatories short, incurved, with 



Figure il.—Cryptochirus corallkola, female: Anterior parts from below, much enlarged. After Verrill. 



simple, sharp, incurved claws; posterior legs becoming shorter, but 

 similar to the others, articulated slightly higher up. Abdomen 

 convex, the rings thin, somewhat indurated above; in the female 

 the edges are expanded and form a well developed egg-pouch below. 

 (Verrill.) 



Color. — As follows: 



Station 28-31. Sepia (with sage greenish tinge when seen through 

 hand lens). Nearly black in fore half of carapace, fighter behind 

 with a narrow median streak. Chelae and carpi almost sage green 

 above; fingers whitish to transparent; ischium and basis of ambula- 

 tories whitish, merus fike carapace, succeeding article wliitish with 

 few marks of carapace color. (W. L. Sclmiitt.) 



Female (67748). Anterior fifth of carapace sort of bay, shading 

 over into middle third of carapace which is a sort of oHve to tawny, 

 shading to Indian or saffron yellow in hinder part of abdomen; 

 carapace and abdomen aU red specked; telson fike middle third of 

 carapace; color of abdomen due to eggs; epimera of abdomen white. 

 (W. L. Schmitt.) 



Measurements. — Female (61517), lengtliTof carapace 5.7, width 

 3.7 mm. 



