266 Rev. T. Hincks on the 



Range. Britain ; Scandinavian seas ; France (soutli-west) ; 

 Bay of Naples. 



Family Cribrilinidse. 



ClilBRlLlNA, Gray. 



Cribrilina punctata, Hassall, var. (PI. IX. fig. 9.) 



A very pretty variety of this species is not uncommon. The 

 centre of the front wall immediately under the projecting 

 lower lip is occupied by a raised area, which is surrounded by 

 a smooth border extending to the margin of the cell. The 

 edge of this area is marked by a line of small prominences, 

 and the outside wall occupied by a number of little alcoves 

 hollowed out in the face of it. Tlie field of the area is per- 

 forated. The pointed avicularia, one at each end of the thick- 

 ened and mucronate lower margin and one on the summit of 

 the ovicell, are present as in the more normal form. 



May not this be the Lepralia crihrosa of Heller ? 



The specimens which have been sent me from the Medi- 

 terranean as Heller's species are undoubtedly referable to 

 C. punctata. 



Family Myriozoidae (part.), Smitt. 



SCHIZOPORELLA, Hincks. 



ScliizoporeUa unicornis, Johnston. (PI. X. figs. 2, 3.) 



Heller records this species and a number of varieties. One 

 remarkable form, however, he does not seem to have noticed, 

 which exhibits a very marked modification of the orifice and 

 contrasts strongly with another form (also found in the 

 Adriatic) in this and other points. 



Schizoporella unicornis, form longirostris. 

 (PI. X. fig. 2.) 



Zocecia large, often somewhat quadrate, moderately con- 

 vex, surface reticulato-punctate, glossy ; orifice arched above, 

 lower margin straight, with a central sinus, contracted above 

 (but without prominent points at the entrance), the cul-de-sac 

 below round ; peristome elevated and thickened, except in 

 front, an umbo below the orifice. Avicularium on one side 

 of the orifice, more or less raised, sometimes mounted on an 

 elevated mound, with a very long beak, base triangular, above 

 it very narrow and of about equal width throughout (narrowing 



