REPORT ON THE BRACHYURA. 



253 



visible in a dorsal view. Postorbital tooth triangular, shorter 

 than the eye-stalks. Abdomen of the female with two median 

 tubercles on the coalesced segment; surface covered with 

 curved hairs. Basal antennal joint with an acute tooth at the 

 antero-external angle; outer margin with four irregular lobes; 

 inner margin with a shallow sinus, its anterior angle rounded. 

 Maxillipeds spinulous. 



The chelipeds as usual in the female are slender; the mar- 

 gins are spinous, the largest spines on the outer margin of the 

 merus and the inner margin of the carpus. The manus is 

 slender, unarmed distally; the fingers are nearly as long as 

 the palm and are in contact. The ambulatory legs are long, 

 slender and of nearly equal length. They are margined with 

 long straight bristles set in short, stout, cylindrical sockets, 

 which remain as hard, bead-like projections when the bristles 

 are removed. There are also a few curved hairs, and the first 

 two pairs of legs are furnished underneath with sharp spines. 



Dimensions. — Length of carapace, 9 mm.; width, 6.8; ap- 

 proximate length of ambulatory legs, as follows: first, 20.4; 

 second, 21; third, 21; fourth, 20 mm. 



10. EUPROGNATHA RASTELLIFERA StimpSOll. 



Stations 27, 35, 47 and 48, off Key West, 50 to 90 fathoms; 

 stations 28, 29, 33, 41 and 42, off Sand Key, 15 to 116 

 fathoms; stations 51 and 62, off American Shoal, 70 to 

 about 100 fathoms; station 56, Pourtales Plateau, about 

 200 fathoms; off Havana. 



These specimens are the form which I described in 1894 as 

 a subspecies, Enprognatha rastellifera spinosa, but as most of 

 them were obtained from the same locality as Stimpson's 

 types, it is probable that this is the typical form of E. rastellifera. 



11. Euprognatha gracilipes A. Milne Edzvards. 

 Off Havana. 



12. Arachnopsis filipes Stimpson. 



Stations 24, 27, 29, 39, 41, off Key West and Sand Key, 15 

 to 116 fathoms. 



