MUSEUM OF COMPARATIVE ZOOLOGY. 75 



Asthenosoma Reynolds! A. Ac. n. sp. 



This species grows to a large size, measuring, when expanded, fully 9 inches in 

 diameter. It is the Atlantic representative of A. coriaceum, to which it is closely 

 allied. When alive the outline of the test is globular, of an ashy gray color, with 

 patches of a darker brownish or a dirty claret color, especially on the actinal side 

 of the test. 



Readily distinguished from A. hystrix by the larger, liigher coronal plates, the 

 prominent vertical row of primary tubercles on the outer edge of the interambu- 

 lacral area on the abactinal side, the less numerous secondaries and miliaries, and 

 the color of the test. The primary spines, quite closely packed, on the actinal 

 side are long, slender, slightly curved, and trumpet-shaped; on the abactinal 

 side they form one principal vertical row extending half-way to the apical system 

 near the outer edge of the intcrambulacral areas. The rest of the test is 

 covered by distant small secondary spines. 



Phormosoma Sigsbei A. Ag. n. sp. 



Closely allied to P. placenta, from wliich it difters in having a smaller number 

 of coronal plates, a stouter test, and primary radicles on the actinal surface re- 

 sembling those of P. burmria. The color of the test when alive is of a reddish- 

 orange color near the ambitus, and more pinkish towards the apical system. 



Off Frederickstadt. 



" Santa Cruz. 

 " St. Kitts. 



tC (( 



" Montserrat. 



" Dominica. 

 " St. Vincent. 



<c cc 



" Grenada. 



Lat. 41° 33' 15" N., Long. 65° 51' 25" W. 



