2l8 COCK.ERELL AND COLLINGE : CHECK-LIST OF SLUGS. 



(5.) Heynemann (Jahrb., 1885, p. 15) refers to the 



existence of the type of Levis in the British Museum, 



and mentions the fact that it was from Jamaica, and 



out of the Sloane collection. I have examined the 



specimen and can confirm Heynemann's statement. 



Thus it becomes evident that sloanii and lav is are 



one and the same thing, and since we have 



access to the type of Levis, the species can be 



identified. There are two smaller examples in 



another bottle in the Museum, with no locality 



stated, but probably from the same source. 



The original specimen of Icevis may be described as follows : 



— Entirely yellowish-white (Sloane has it white or ashy, 



with some blackish marks). Length, 50 mm.; breadth, 17^ 



mm. Breadth of sole, 7 mm. End of sole rounded, not 



projecting beyond mantle. Female orifice, 29 mm. from 



head and 2 mm. from sole. Anal (?) orifice, 6 mm. from 



end of sole, and 13 J, mm. from female orifice. Respiratory 



orifice somewhat rounded in outline, close to, and a little 



to the right of, the end of sole, much as in other species. 



Mantle granulose. Penis projecting from male orifice, 



stout, with end blunt and rounded. 



The anal (?) orifice deserves note. I think it is abnormal, 

 and not a peculiarity of the species, that there should be 

 such an orifice away from the respiratory Orifice. In 

 Sloane's figure an orifice is drawn in the middle of the sole 

 — an evident mistake ; but in Blainville's figure what looks 

 like a female orifice too far back is really this anal (?) 

 orifice.'- 10 

 536 b. var. coffea. No adequate description of this has yet appeared, 

 so I proceed to give one. 



Slug when alive over 3J inches long, 31 mm. broad; 

 when put into alcohol it exudes copious slime. 



Adults not fusciate, young obscurely fusciate. Pale 

 middle-line, usually very conspicuous. Colour above dark 

 vandyke brown, obscurely marbled with darker. Skin 

 minutely tuberculose. Beneath yellowish-white, spotless,, 

 sole more ochreous, end of sole blackish. Slime not milky 

 in the living slug. Eye peduncles dark, inferior tentacles 

 light. Sole narrow, not projecting beyond end of body. 



'-" There can be no doubt but that this slug -should be termed sloanii, as none of the later 

 descriptions are any better than that given by Sloane. It yet remains for some one to describe 

 and figure from better material the internal and external morphology. It is to be hoped, however, 

 whoever does this will retain the term sloanii, and simply alter the authority. — W.E.C. 



