6Y C. HEDLEY. 717 



name also happens to have page-precedence, it is recommended 

 that 0. kreffti be reduced to synonymy. 



The species haunts creviceson the under surface of loose rocks 

 between tide-marl<s. When kept in an aquarium, it endeavours 

 to creep from the light to the darkest corner available. The 

 colour is uniform cream, the foot truncate or emarginate. The 

 rhinophores are folded, narrow, pointed and divaricate; beneath 

 and between these are two falcate processes. The eyes are 

 black, close together in the median line, just behind the junction 

 of the rhinophores. The external appearance suggests that a 

 natural classification would group the family Pyramideilidfe in 

 Opisthobranchiata near the Activonidse. 



DOLABRIFERA BRAZIERI CJOWerby. 



(Plate xlix., Hg.25.) 



Dolnhrifera brazieri Sowerby, Proc. Zool. Soc, 1870, p. 250; 

 Id., Angas,oj9. ci<., 1871, p.98. Dohihi'ifera jacksoniensis Pilsbry, 

 Man of Conch., 1896, p.l20, PI. 44, figs.38, 39, 40, 41. 



The haunt of this species is the coralline zone of the ocean- 

 rocks, where form and colour tend to conceal it against its native 

 background. In extension, the animal is about four inches 

 long, and one and a half broad. The colour is olive-brown, 

 variegated with buff, and tinged, at the margin and on the 

 tentacles and rhinophores, with green. Upon the back are 

 about a score of warty protuberances, which rise or subside at 

 the will of the animal, and from the summit of which a white 

 filament may project for two or three millimeters, or be with- 

 drawn. 



The tentacles are comparatively short and broad, hell-shaped, 

 split nearly to the base, with ragged margin. The rhinophores 

 are narrow, more cylindrical, less deeply notched, set farther 

 back on the neck. Just in front of these are the sessile, incon 

 spicuous, black eyes. 



The posterior orifice is set far back, is ovate, about 6 mm. 

 long, with erect margins and an inner lobe rising at the anterior 

 end. Ill front of this, the right side of the mantle overlaps the 

 left. The gill is never exserted. 



o 



