THE GKAPSOID CKABS OP AMEKICA. ' 125 



Clieliped roughened with a few faint rugae, a small tooth at inner 

 angle of carpus, upper margin of propodus acute; propodus twice as 

 long as wide, straight above, sinuous below, fingers slightly deflexed, 

 stout, shutting close together, tips incurved, a minute tooth near base 

 of dactyl. 



Legs slender; merus joints dilated slightly; propodus tapering a 

 little toward distal end; dactyls 

 1, 2, and 3 subcylindrical, little 

 curved, ending in two short un- 

 equal spines, the smaller not in the 

 same plane as the longer, but be- 

 low it; posterior margin armed 

 with two rows of spinules, a few of 

 the same also on the corresponding 

 margin of the propodus. Fourth 

 dactylus straighter, simple, not 

 bifurcate, both margins spinulous, f»<>- ti.-dissodacttlus alcocki. lbo 



, . <• 1 T OF MALE I'ARATYI'E, X 10. 



as also margms oi propodus and 



carpus. Male abdomen with segments 1 and 2 fused, 3 to G inclusive 

 fused and with convex margins, 7 triangular with blunt tip. Female 

 abdomen with segment 1 short, half as long as 2 ; 3, 4, 5, and G incom- 

 pletely fused, 7 broadly triangular, half as wide as G. 



Measurements. — Female (23447), length of carapace 4.2, width 

 5.8 mm. Male smaller, too damaged for measurement. 



Material examined. — Gulf of JNIexico, off Delta of Mississippi 

 River; lat. 29° 24' 30" N.; long. 88° 01' 00" W.; 35 fathoms; yl. S. 

 bk. Sp. ; Mar. 4, 1885; station 2388, Albatross; 1 male, 1 female 

 holotype (23447). 



DISSODACTYLUS CALMANI.* new species, 



Plate 28, figs. 5 and G. 



Type-locality. — Grecian Shoals, Hawk Channel, Florida ; 2 fath- 

 oms; station 74G9, Fish Hawk; 1 female (Cat. No. 49233, U.S.N.M.). 



Diagnosis. — Carapace sharply pentagonal, covered with rugae; 

 antero-lateral margins dentate. Dactyl of legs 1 to 4 bifurcate, and 

 with a marginal line of spinules. Palp of outer maxillipeds 3-jointed- 



Description of female. — Appearance quite unlike those above de- 

 scribed. Carapace pentagonal, deflexed in front of lateral angles, al- 

 most flat behind them, antero-lateral margins short, slightly convex, 

 dentate, postero-lateral margins long, straight, and posteriorly con- 

 verging, posterior margin sinuous ; dorsal surface covered with short, 



1 Named for Dr. W. T. Caiman, British Museum. London. 



