THE GRAPSOID CEABS OP AMERICA. 117 



halfway to base; divisions cjdindrical, acutely pointed, slightly 

 curved, the anterior one of each leg somewhat longer than the poste- 

 rior; dactylus 4 nearly straight, slightly compressed, silicate above 

 and below and naked. 



First and second segments of abdomen narrower than third and 

 fused; third to sixth fused, slightly expanded at base, considerably 

 contracted at distal end; terminal segment small, nearly an equi- 

 lateral triangle. Appendages of first segment reach almost to ter- 

 minal segment, and are straight for basal two-thirds, terminal por- 

 tion turned sharply outward at obtuse angle; basal portion hairy 

 along outer edge, terminal portion on both edges. (Smith.) 



Description of female. — The female resembles the male. The 

 postero-lateral margin of carapace is a little concave. The abdomen 

 covers the width of the sternum but 

 does not quite reach the extremity; 

 all segments free, second nearly twice 

 as long as first, third, fourth, fifth, 

 and sixth of subequal length and 

 each twice as long as second; seventh 

 triangular, one-third as wide and 

 two-thirds as long as sixth, sides 

 sinuous. 



Color. — In alcohol, dirty white; fio. 65. — dissodacttt.us nitidus, 



1 1 •ii • 1 TBIBD LEO OF VEMALE (22113), X 11. 



carapace marked with irregular, x ,, ^ . 



transverse bands of purplish brown, and divisions of dactyli of first 

 and third legs tipped with dark brown. (Smith.) 



Measurements. — Male holotype, length of carapace 4.7, width of 

 same 5.1 mm. Female (22113), length of carapace 5.5, width G mm. 



Range. — From Santa ]Maria Bay, Lower California, Mexico, to 

 Peru. To a depth of 5^ fathoms. 



Material examined. — 



Off Santa Maria Bay, Lower California; in boat dredge; Mar. 18, 

 1911; Albatross; 3 males, 1 female (49229). 



Off Abreojos Point, Lower California; lat. 2G° 42' 30" K; long. 

 113° 34' 15" W.; 5^ fathoms; gn. M.; May 4, 1SS8; station 2835, 

 Albatross; 2 females (22113). 



Bay of Sochura, W. of ^latacaballa, Peru; about 5 fathoms, in 

 trawl ; Apr. 8, 1907; Jl. E. Coker, collector; reed, from Peruvian Gov- 

 ernment; 1 female (40447). 



DISSODACTYLUS MELLITAE (Rathbun). 



riate 28, figs. 7 and 8, 



EchinnpJiilns tucllitne Kathbun, Amor. Nat., vol. 34. 3000, p. 500 (type- 

 locnlity. I'cnsjuola, Florida, on MelUta testudinata ; holotype, Cat. No. 

 23434, U.S.N.M.). 



