272 



NATURAL HISTORY BULLETIN. 



of smaller cheliped almost entirely covered with tubercles 

 which grow smaller toward the distal and lower margins; up- 

 per margin with a longitudinal groove; fingers deeply grooved. 

 Upper margins of ambulatory legs tuberculate or granulate. 

 The females differ in having the whole outer surface of the 

 larger as well as of the smaller hand tuberculate. 



Dimensions. — Length of carapace of male 3.6, width 4.7, 

 length of larger propodus 4, width 2.3 mm. 



Color. — Specimens in alcohol are speckled with dark blue, 

 with larger patches on the anterior part of the gastric region 

 and on the cardiac region. 



Type locality. — Bahama Banks (University Collection and 

 U. S. Nat. Mus. No. 19975). 



Distribution. — Besides having been taken off Key West, 

 this species had previously been dredged by the "Albatross " 

 in the Gulf of Mexico and Caribbean Sea at stations 2362, 

 2363, 2365 and 2413, in 21 to 25 fathoms, and at Old Provi- 

 dence. 



Genus Lophopanopeus nov. 



Carapace hexagonal, convex, areolate; lateral teeth N, T 

 and S (in the language of Dana) subequal, prominent; E 

 present, but reduced and coalesced with D to a greater or less 

 extent; front narrow, lobes sinuous; orbits transverse. Car- 

 pus of chelipeds longer than wide; lower margin of propodus 

 concave distally; ambulatory legs more or less cristate. In 

 Lophoxanthzcs A. Milne Edwards (type Xantho lamellipes 

 Stimpson) the carapace is flat, the orbits small and circular, 

 the chelipeds heavy. 



Type of Lophopanopeus, Xantho bcllus Stimpson. To this 

 genus belong also the species leucomanus (Lockington as Xan- 

 thodes) ,Japonicus nom. nov. {==Lophozozymus (Lophoxanthus) , 

 bell us var. leucomanus Miers), frontalis Rathbun (as Lophozo- 

 zymus (Lophoxanthus)), lobipes (A. Milne Edwards as Xeo- 

 pauope), two undescribed species from Western America, and 

 dislinctus, nom. nov. [=Micropanopc sculptipes A. Milne Ed- 

 wards not Stimpson) which is included somewhat doubtfully. 



