PROCTONOTUS. 607 



Tlie number of tentacles distinguishes this genus from 

 the section Tergipes of Eohs- 



] . E. puLcmiA, Alder and Hancock. 



Monog. pt. v., fam. 3, pi. 3(5, and (as PtcrocMhis pulcher) Ann. Nat. Hist. 

 vol. xiv. p. 329. 



Body (two-tenths of an inch long) oblongo-lanceolate, 

 flesh-coloured, spotted with white. Tentacles short, blunt, 

 smooth. Branchiae large, elliptical, bright orange- red in 

 centre, dotted externally with white, ranged in single file 

 of five or six on each side. It varies in having the body 

 colourless, and the branchia? chestnut. 



Coast of Bute (Alder) ; Aj^rshire (D. Landsborough, 

 jun.). It inhabits the littoral zone. 



2. E. MiNUTA, Forbes and Goodsir. 



Plate B. B. B., fig. 5. 



Eolidia minuta, Forbes and Goodsir, Rep. of Brit. Assoc, for 1839 (vide 

 Athenaeum, No. 618, p. 647). 



Body (one-eighth of an inch long) linear, pinkish-yellow. 

 Tentacles longer than in the last, wrinkled. Branchire 

 linear, vermicular, pinkish tipped with white, ranged in 

 single file of seven on each side. 



Dredged in seven fathoms among laminarise, at Lerwick, 

 Zetland (E. F.). 



PROCTONOTUS, Alder and Hancock. 



Body ovate-oblong, depressed, acuminated behind. 

 Head covered with a small semilunar veil. Dorsal tentacles 

 two, linear, not laminated ; oral tentacles two. Branchiao 

 papillose, ovate, arranged along the edge of the sides of 

 the back, and continuous in front above the head. Vent 



