230 CORYSTOID CRABS—BENEDICT. 
duced front into two large, prominent, blunt teeth. ‘ The lateral mar- 
gins are armed with seven teeth, of which the four anterior are subequal 
or a little larger than the first of those remaining.” 
The carapace is thickly set with spiny tubercles. The merus joints 
of the four pairs of ambulatory legr have their distal upper margin 
set with six or seven sharp procurved spines; the lower margins have 
a double row; the posterior sides of the last pair are tuberculous or 
spiny; the anterior side of the last pair and the sides of the others are 
hairy. The carpal, propodal, and dactyl joints have three rows of sharp 
spines. The hands are nearly equal; a row of spines extends along 
the upper margin and part way down the movable finger; the outer 
lower margin has another row; on the outside of the hand there are 
four rows. The spines of the row which extends from the gape of the 
fingers to the carpal joint are conspicuously smaller than the others. 
The fingers are long and pointed and armed with large teeth. 
The mature female abdomen is altogether different from that of chetr- 
agonus, the sixth article being but slightly concave. The reproductive 
openings are placed outside of the abdomen, and differ much in shape 
and a little in position from those of cheiragonus. In the latter they 
are opposite the middle line of the second pair of ambulatory legs; in 
this species they are on the line between the first and second pairs. 
The legs and lower parts of the body are thinly covered with long 
hair, the carapace with short bristles (see pl. XxVI, fig. 7). 
Length of carapace of a large specimen, 110 millimeters; width, 106 
millimeters; extent of ambulatory legs, 460 millimeters. 
RECORD OF SPECIMENS. 
Albatross dredgings, 1890. 
Station. | Depth.| Lat. N. Long. W. | Mus. No. 
Fath. oO i ut oO / di 
3222 50 | 5420 00 1653000] — 16006 
3268 26| 552900 | 1631300 | 16007 
3269 16} 5519 00 | 163 04 30/§ i8005 
3271 25| 55 29 15 | “162 58 00 1S feng 
3272 31| 553140 1630700} 16017 
3275 22| 55 4420 | 1621730] 16010 
327 18| 555845 | 161 4630] 16011 
3281 36 56 14 00 | 161 41 15 16018 
3289 16| 564430) 15916 00| 16012 
3294 30| 571645) 1590330] 16013 
3311 85 | 535936 | 16629 43| 16014 
I 
Mr. William H. Dall obtained specimens as follows: 
Kyska Harbor, 6-12 fathoms (14831). 
Nazan Bay, Atka, 10-16 fathoms (14828). 
Off Rocky Point, Hiuliuk, Unalaska, 10 fathoms (13141), 
Captain’s Bay, Unalaska (14832). 
Off Round Island, Coal Harbor, Unga Island, 6-8 fathoms (14830). 
Port Levasheff (14833). 
Additional specimens were collected at St. Paul Island, H. W. Elliott, 
1872 (14834); and at St. Paul Island, William Palmer, 1890 (15344, 
15345). 
