THE CANCROID CRABS OF AMERICA 331 



finger. Minor cheliped narrower, fingers bent down a little more; 

 prehensile teeth all small. Merits of legs narrow, anterior margins 

 spinulous; carpus-propodiis enlarged at middle; carpus subcristate, 

 having a deep groove near anterior margin; propodus with convex 

 margins. 



Measurements. — Male holotype, length 7.1 mm., width 9.9 mm. 

 /^aw^re.— Mexico: Magdalena Bay, Lower Cahfornia; Gulf of 

 California. 7 to 17 fathoms. 



Material examined. — Magdalena Bay, west coast of Lower Cali- 

 fornia; lat. 24° 32' 00" N., long. 111° 59' 00" W.; 12 fathoms; fne. 

 gy. S.: May 2, 1888; Albatross; 1 ovigerous female (22006). 



Southern part of Gulf of California; Albatross: Lat. 24° 11' 30" N., 

 long. 109° 55' 00" W.; 10 fathoms; Sh.; April 30, 1888; 1 young 

 female (22005). Lat. 24° 22' 15" N., long. 110° 19' 15" W.; 7 

 fathoms; brk. Co.; April 30, 1888; 4 males, 1 female (22004). Lat 

 24° 22' 30" N., long. 110° 19' 30" W.; 8 fathoms; brk. Sh.; April 30, 

 1888; 1 male holotype, 1 female (21585). Lat. 25° 02' 15" N., long 

 110° 43' 30" W.; 17 fathoms; S. Sh.; March 17, 1889; 1 male (22007). 



LOPHOPANOPEUS DISTINCTUS Rathban 



Plate 155, Figures 1 and 2 



Micropanope sculptipes A. Milne Edwards, Crust. R6g. Mex., 1880, p. 325, pi. 



54, fig. 2-2c; BuU. Mas. Comp. Zool., vol. 8, 1880, p. 14; not M. sculptipes 



Stimpson. 

 Lophopanopeus distinctus Rathbtjn (new name), Bull. Labor. Nat. Hist. State 



Univ. Iowa, vol. 4, 1898, p. 272.— A. Milne Edwards and Bouvier, Mem. 



Mus. Comp. Zool., vol. 47, 1923, p. 326. 



Z^Mfirnom.— Carapace unusually wide. Chelipeds granulate. Pro- 

 podus of legs wide, not cristate. 



Pescnpf-ioTi.— Carapace broad, regions well marked, lobulate, and 

 granulate on the highest parts, with a tendency to form transverse 

 series ; surface sparsely hairy. Front little advanced, deflexed, double- 

 edged, the upper edge more coarsely granulate than the lower or 

 true edge; median notch broad; each lobe with a concave edge and an 

 obtuse angle at either end. Inner angle of orbit a right angle; mar- 

 gin granulate; outer notch of good width, a broad tooth on its inner 

 side. Outer angle of orbit slight, inconspicuous; next antero-lateral 

 tooth broad and low; last three teeth subequal, the last two teeth 

 with pointed tips, which are equally produced laterally in the old, 

 but the last tooth less produced in the young. 



Chehpeds subequal, narrow, pubescent and covered with sharp 

 granules; merus spinulous on upper margin; carpus with a stout 

 inner spine, outer surface irregularly furrowed; manus with a longi- 

 tudinal furrow outside, a little below upper surface, and another, 

 narrower and shallower furrow on the upper surface. Fmgers elon- 

 gate, little or no gape, shallow teeth on prehensile edge. The mov- 



