THE MOUNT DESERT EEGIOlSr 159 



rarely to 194 feet. Gonads are mature chiefly in the late 

 summer. 



Class HOLOTHUROIDA Sea-cucumbers 



Order DENDROCHIROTA 



Cucumariidae 

 CucuMARiA de Blainville 



C. FRONDosA (Gunnerus). Clark, 1904, p. 566, pi. 11, figs. 

 65,, 66, pi. 12, figs. 76-80; Mortensen, 1927, p. 398, fig. 236.) 

 Taken very widely and often in great numbers on most sorts 

 of bottom. Most abundant from low water to about 70 feet. 

 Taken only twice in water deeper than 85 feet, greatest depth 

 (D 15) 220 feet. The young larvae are found in great abun- 

 dance in July. 



C. puLCHEERiMA (Ayrcs). (Clark, 1904, p. 567, pi. 12, figs. 

 81-85.) Taken on bottoms containing mud with sand: not 

 common. Seven of the eleven stations are between the mouth 

 of Somes Sound and Sutton's Island. Stations: D 27, 51, 52, 

 54, 55, 62, 63, 71, 83, 115, 141. 



Psolidae 

 PsoLUS Oken 



P. PHANTAPus (Strussenfelt). (Mortensen, 1927, p. 415, fig. 

 251.) On gravel and small stones, rare, depth 68 to 101 feet. 

 Stations : D 38, 56, 68. 



Order MOLPADONIA 



Molpadiidae 

 MoLPADiA Cuvier 

 M. ooLiTiCA (de Pourtales). (Clark, 1904, p. 570, pi. 11, fig. 

 72; pi. 13, figs. 105-108.) Two specimens from rocky bottom 

 at a depth of 76 feet. Station : D 94. 



