1894. PROCEEDINGS OF THE NATIONAL MUSEUM. 85 



Tlie chelipeds are similar in ornamentation to those of S. typicus; the 

 upper margin of the outer surface of the manus is furnished with 10 

 granulated teeth, the lower margin with about 12; as in 8. typicus, the 

 surfaces of the palm have bunches of granules arranged in 2 longi- 

 tudinal rows. The immovable finger is shorter and more detlexed than 

 in 8. typicus, and in consequence the dactylus is also more deflexed, 

 being, when closed, nearly at a right angle with the outer or upper 

 surface of the palm. Color of fingers in alcohol, red. 



Measurements — Length of carapace of male, mm.; width, 7. 



Locality.— Gnlf of Mexico, in hit. 28° 44' N., long. 85° 16' W., 60 

 fathoms, gray sand, station 2404, one male (No. 18157, U. S. N. M.). 



Family Cancrid^.. 



ACT^.A PALMERI, new species. 



Carapace covered with 30 large, nodose prominences separated by 

 deep sinuses filled with long silky hair, which also conceals the pos- 

 terior portion of the carapace as well as the entire lower surface of the 

 crab. The nodules of the surface are very convex and are each com- 

 posed of a number of smooth, shining, bead-like granules crowded close 

 together. The frontal lobes or nodules are thick, with convex, entire 

 margins, and are separated by a deep sulcus. There are 6 orbital 

 nodules, one very small inner-orbital, followed by 1 large and 2 

 small, and 2 suborbital nodules. The basal antenual joint is also a thick, 

 shining, compound nodule. The carapace has 4 nodules on the lateral 

 margin which project upward and not outward, the margin itself being 

 entire. A small median lobule is visible near the posterior margin. 



Chelipeds with merus smooth and hairy, carpus with G nodules, and 

 manus with 5, the remainder of the surface silky hairy. Immovable 

 finger and distal half of dactylus smooth and shining, horn-colored, 

 with white tips. The fingers are broad, compressed and sharp-pointed. 

 The ambulatory legs have 2 small nodules on the carpal joints, 1 or 2 

 on the propodal joints, and 2 on the meral joints of the last pair. 



Measurements. — Length of male, 16 mm. ; width, 21 , Length of female, 

 14; width, 19. 



Locality. — Rodriguez Creek, Florida, Dr. Edward Palmer; 1 male, 1 

 female carrying a large quantity of minute eggs, and 2 young specimens, 

 male and female (No. 13027, U. S. N. M.). 



PILUMNUS DIOMEDE^, new species. 



Carapace of moderate width, beset with long yellow hairs arising from 

 low spinules. Front with 2 produced lobes, each bearing 4 slender 

 spines; a longer incurved spine is placed near the antenna. Orbital 

 spines 9, 2 on the u^jper margin, 1 at the outer angle, and below. 

 Of the suborbital spines, the 2 outermost are separated by a deep 

 fissure. There are 4 strong anterolateral spines, including the orbital; 

 between the first and second there is a small spine, and the second 



