COCKERELL AND COLLINGE : CHECK-LIST OF SLUGS. 45 



Measurements in alcohol: breadth of body 21 mm., of 

 ".sole 8 mm. female orifice 2 mm. from sole, 33 from 

 head, and 32 from hind end. Filiform glands numerous 

 (more than 15), about 6 mm. long. Penis-sac cylindrical, 

 curved into the form of a U ; retractor single, long ; penis 

 cylindrical with a rounded head and terminal orifice. 

 537. V. virgnta. I am now somewhat uncertain whether this is 

 distinct from sloanii other than in a varietal sense. I have 

 descriptions of several other Jamaican Verontcdice, which 

 I refrain from naming publically, hoping by further study 

 to arrive at some clear decision with regard to their 

 standing. It is possible to distinguish these forms by 

 characters which seem not altogether unimportant, but 

 without obtaining further statistics as to variation, it seems 

 hazardous to propose them all as Sfjccies. 

 V. virgata, in five of the six specimens originally found, had 

 the female orifice h mm. from >ole ; in the sixth | mm. ; in 

 V. sloanii (both type and var. coffece) it is 2 mm. from sole. 

 The female orifice is about the same distance from the 

 middle in virgata as in sloanii, or perhaps rather more 

 median. The six specimens of virgala had it respectively 

 •52, "54, "55, -56, "56, and "57 of total length from head. 

 In Icevis {sloanii) type it is "58. 



As to breadth of body and sole, a virgafa 50 mm. long 

 had body 16 mm. broad and sole 6 broad — thus about 

 I mm. narrower than the type of liei'is. 



The anal orifice of virgata is not separate from the 

 respiratory orifice. The filiform glands of rirgaia are 

 9 mm. long, whereas in sloanii v. coffea they are about 6 mm. 

 The types of virgata were from Port Henderson, but 

 Mr. Peckham found (and kindly gave me) a single specimen 

 at Moneague. 

 538. V. janiaiccnsis. This must be regarded as founded on 

 Semper's figure and description. The specimens I had, 

 which I believed identical with it, I now think to be 

 distinct, and probably not specifically separable from 

 7'irgata. 

 541. V. occidcntalis, Guilding. This slug is reputed to occur in 

 Cuba, Hayti, Porto Rico, Dominica, Venezuela, Guiana, 

 Martinique, St. Vincent, Guadeloupe, Jamaica, Trinidad, 

 and perhaps St. Thomas. These records, however, are 

 mostly worthless, being based on a supposition that almost 



