290 



NATURAL HISTORY BULLETIN. 



this there is a depression corresponding to that in sulcata, but 

 shallow and granulate. 



Dimensions. — Female, length, median 13.7; entire length 

 14.6; greatest width, across postero-lateral angles, 17.5 mm. 



Range. — Type locality, off the Delta of the Mississippi, 

 station 2388, lat. 29 24' 30" N., long. 88° 01 ' W., 35 fathoms, 

 one female (U.S. Nat. Mus. No. 14941). One additional 

 female was taken off Cape Hatteras, N. C, station 2296, lat. 

 35 35' 20" N., long. 74 58' 45" W., 27 fathoms (U. S. 

 Nat. Mus. No. 8817). 



115. Calappa angusta A. Milne Edwards. 



Stations 24, 26 and 47, off Key West, 60 to 80 fathoms. 



116. Calappa gallus {Herbst) (=C. galloides Stimpson.) 

 Tortugas. 



117. Cycloes bairdii Stimpson. 



Spanish Wells, Bahamas, 6 fathoms. One female, which 

 differs from the types from Cape St. Lucas only in its 

 rougher and more uneven surface. 



118. Osachila tuberosa Stimpson. 



Station 24, off Key West, 60 fathoms; off Havana. 



leucosiid^;. 



119. Spelceophorus elevatus sp. nov. PI. in, Fig 1. 

 Station 46, off Key West, shallow water; one female. 



Carapace very high; Jour large branchial openings; antero- 

 lateral and lateral margins subequal ; tzvo -posterior marginal 

 lobes reduced. 



Allied to S. triangulus A. Milne Edwards, but the carapace 

 is narrower and much higher. In triangulus the highest 

 point of the dorsal surface is at the anterior end of the ridge 

 which defines the inner and posterior boundary of each 

 branchial region; in elevatus the highest point is at the middle 

 of this ridge. Hepatic region convex; subhepatic tooth 



