Tectihranchs of the Bermudas. 547 



Pleurobranchopsis, gen. nov. 



Body ovate, dorsum separated from the neck by a groove. Shell 

 absent. Rhinophores elongated, folded. Oral tentacles conical. 

 Gill lateral, attached along its entire length, or nearly so; no shell. 



Allied to PleurohrancJius, but differs in lacking the shell and in 

 the sessile gill. From PleurohrcmcJuea it differs in the gill, and the 

 free anterior margin of the mantle. 



Pleurobranchopsis aurantiaca, sp. nov. 

 Plate LXVI. Figure 5. 



Mantle convex, smooth, with a free edge all around, forming a 

 slight sinus at the gill. The gill arches upward and backward and 

 is attached along its whole length. Foot wide, extends a short dis- 

 tance beyond the mantle posteriorly. Rhinophores slender, diver- 

 gent, longer than the conical tentacles. 



Color of entire upper surface bright orange, deeper orange-red on 

 the mantle, which is finely specked with white and slightly translu- 

 cent; foot, head and gill paler orange. 



Length in life, in extension, 32 to 36"^"" (aboiit 1.75 inches); 

 breadth, IS to 20'"'" (about .75 inch). 



Coney Island at low-tide, among alg?e. One example. 



A cluster of eggs found at the same time and place, under a flat 

 stone, is supposed to belong to this species. It is in the form of a 

 broad gelatinous ribbon, attached by one edge and filled with numer- 

 ous bright orange eggs in many rows. 



Elysia crispa Morch. 



Plate LXVI. Figure 4. 



This is a small, delicate, light green sj^ecies, covered with small 

 white specks and larger white spots or blotches, and a squarish white 

 spot on the back of the head and neck, with prolongations into the 

 rhinophores. Length 7-10*"™. 



Among dead corals and on green algaj, 2 to S feet below low-tide. 

 Bailey Bay, May 5. 



Coryphella (?) pallida, sp. nov. 



Body small, slender, dorsal papillae long, slender, in two series of 

 lateral clusters, numerous, not crowded, usually curved. Rhinophores 

 elongated, tapered, slightly plicated, light yellow. Foot narrow. 



