Mr. T. D. A. Cockerell's Notes on Slugs. 105 



Girasia extranea (F^r.). 

 Limax extraneus, F^r. Hist. Nat. Moll. pi. viii. F. figs. 4, 5, 6, 7. 

 This is evidently a true Girasia^ and surely it must be 

 identical with G. Hookeri, Gray. The aperture in the mantle, 

 the posterior ridge or line directed towards the respiratory 

 orifice, the characteristic shape, all are those of Hookeri, and^ 

 the colour also agrees. Of course, assuming the identity of 

 the two, extranea has priority. 



Girasia extranea^ var. Hooheri (Gray). 



I will treat Hooheri as a variety of extranea in deference to 

 the opinion of those who seem to see noteworthy differences 

 between them ; but I believe that they are practically iden- 

 tical. 



The type specimen of Girasia Hookeri is in the British 

 Museum marked " Khassya, Sir W. Hooker." It is 40 

 millira. long fin alcohol), colour uniform dark brown. It 

 agrees with Hookeri as described and figured by Godwia- 

 Austen. 



Girasia extranea, var. brunnea (G.-A.). 

 Girasia extranea, var. shillongensis (G.-A.). 

 Girasia extranea^ var. maculosa (G.-A.). 



The present species is a very variable one, and these three 

 varieties are described by God win- Austen under Hookeri. 

 Tryon's description of var. hrunneus (under shillongensis) is 

 not correct. 



Girasia depressa, subsp. nov. 



G. extranea subsp., 27| millim. long, mantle 13^ millira. 

 long, respiratory orifice 85 millim. from anterior border of 

 mantle. Colour ochreous, pale greyish below mantle ante- 

 riorly at sides. Sole unicolorous, orangy-ochre. Mucus- 

 pore well developed. Shell brown, semitransparent, horny. 



Described from an alcoholic specimen in the British 

 Museum marked '•^Girasia Hookeri, Rve., Teria Ghat." 



This subspecies (possibly species) differs from Hookeri or 

 extranea in several ways. The mantle of Hookeri is strongly 

 convex antero-posteriorly, that of G. depressa, viewed from 

 the side, is practically flat. The respiratory orifice is less 

 anterior and the orifice in the mantle above the sliell is much 

 larger in depressa than in Hookeri. The shell of depressa, in 

 the specimen I examined, projects out of the opening. 



