NO. 2138. THREE SriJCIES OF CRABF! {OSACIIILA)—RATnBUN. 651 



Variations. — Eighteen specimens were examined. While the 

 majority of the specimens, inchicling the two largest ones, are, as 

 stated above, deeply eroded in the depressions as well as on the 

 protuberances of the carapace, this is not true in all cases. One 

 out of two males of equal size (No. 9508, U.S.N.M.), one male in a 

 set of two, male and female (No. 2G03, M. C. Z.), one very small male 

 (No. 2595, M. C. Z.), one male (No. 2731, M. C. Z.), and one female 

 of good size (No. 2922, M. C. Z.) have the depressions mostly simply 

 ]:)unctate. The frontal lobes, though more advanced in the full 

 grown specimens than in tuherosa of the same size, are not more 

 advanced when smaller specimens are compared. 



LOCALITIES OF SPECIMENS EXAMINED BY THE WEITER. 



Off Havana, Cuba, lat. 23° 10' 31" N.; long. 82° 19' 55" W., 114 

 fathoms, coral; Station 2331, U. S. F. C. Str. Albatross, 1885; 1 

 female, holotype, Cat. No. 9503, U.S.N.M. 



Off Havana, Cuba, lat. 23° 10' 42" N.; long. 82°18' 24" W., 67 

 fathoms, wh. Co. ; Station 2334, U. S. F. C. Str. Alhaiross, 1885 ; 2 

 males, Cat. No. 9508, U.S.N.M. 



Off Havana, Cuba; Biol. Exped. State Univ. Iowa, May 26, 1893; 

 1 male, Cat. No. 20496, Mus. State Univ. Iowa. 



Off Frederickstadt, Santa Cruz, lat. 17° 37' 55" N.; long. 64° 54' 

 20" W., 117 fathoms, R. brk. Sh., temp. 65° ; Station 132, U. S. C. S. 

 Str. Blake, Jan. 5, 1879; 1 male, Cat. No. 2591, M. C. Z.; 1 male, 1 

 female, Cat. No. 2603, M. C. Z. 



Off Montserrat, lat. 10° 41' 54" N.; long. 62° 13' 24" W., 88 

 fathoms, temp. 69° ; Station 156, U. S. C. S. Str. Blake, Jan. 16, 1879; 

 1 female, Cat. No. 2774, M. C. Z. 



Off Dominica, lat. 15° 32' 18" N.; long. 61° 30' 10" W., 118 

 fathoms, S. brk. Sh., temp. 65°; Station 177, U. S. C. S. Str. Blake, 

 Jan. 24, 1879 ; 2 males, 1 female, Cat. No. 2768, M. C. Z. 



Off Dominica, lat. 15° 17' 20" N.; long. 61° 24' 22" W., 138 

 fathoms, fne. S. M., temp. 63^°; Station 192, IT. S. C. S. Str. Blake, 

 Jan. 30, 1879; 1 female. Cat. No. 2922, M. C. Z. 



Off Barbados, lat. 13° 11' 54" N. ; long. 59° 38' 45" W., 73 fathoms, 

 Co. S. Sh., temp. 70a° ; Station 290, U. S. C. S. Str. Blake, Mar. 9, 

 1879; 1 male. Cat. No. 2595, M. C. Z. 



Off Barbados, lat. 13° 04' 12" N.; long. 59° 36' 45" W., 76 fathoms, 

 Co. brk. Sh., temp. 641° ; Station 272, U. S. C. S. Str. Bla.ke, Mar. 5, 

 1879; 1 female. Cat. No. 2579, M. C. Z.; 1 female, Cat. No. 2643, 

 U.S.N.M. 



Off Grenada, lat. 11° 27' 00" N.; long. 62° 11' 00" W., 164 fathoms, 

 S. Sh., temp. 57°; Station 254, U. S. C. S. Str. Blake, Feb. 27, 1879; 

 1 female, Cat. No. 2921, M. C. Z. 



