22 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



as seen from above faintly notched, the truncate lobes sloping slightly 

 backward from the middle; edge turned vertically down and deeply 

 grooved from side to side. 



FlO. 5. riLPMNOPLAS AMERICANA, MALE, STATION 62, DORSAL VIEW, X IJ. 



Antero-lateral border much shorter than the postero-lateral, thin 

 and sharp and cut into four teeth, the first of which is lobiform and 

 fused with the obtuse orbital tooth, the next two acute, the last one 

 minute. 



Eyes stout. Margin of orbit fissured above near the middle, deeply 

 excavate above and below near the outer angle; inner lower angle 

 dentiform and moderately prominent. 



Chelipeds very unequal in both sexes, surface finely frosted, inner 

 angle of wrist strongly prominent, with two acute teeth. 



Legs narrow, unarmed, granulate above, very sparingly hairy; 

 third pair the longest. 



Measurements. — Male (4G184) , 

 length of carapace 12, width of 



same 15.7 mm. Female, length n;. 6.-pilumnoplax americana, male, sta- 

 of carapace 13, width of same tion g2, anterior portion of carapace, 

 16 mm. (Alcock). '"^'^^"' ™'"' '''=^°"^' "" ^^• 



Range. — Off Georgia and the Florida Keys; Arabian Sea. 70 to 

 440 fathoms. 



Material examined. — 



Off Georgia; lat. 30° 44' 00'' N.; long. 79° 26' 00" W.; 440 

 fathoms; Co. crs. S. Sh. For.; temp. 45.6° F.; Apr. 1, 1885; station 

 2415, Albatross; 1 male holotype (19652) ; 2 males, 3 females (19653). 



Off Sand Key, Florida ; Sand Key Light bearing N. about 6 miles ; 

 116 fathoms; June 19, 1893; station 28, State Univ. Iowa Exped.; 

 1 male (Mus. S. U. L). 



Off American Shoal, Florida; State Univ. Iowa Exped.: American 

 Shoal Light bearing N. by W., 10 miles; about 100 fathoms; June 27, 



