Mr. T. D. A. Cockerell's Notes 07i Slugs. 281 



long ; sole lat. 23f millim. ; median area, lat. 10^ millini., 

 thus broader than either lateral area ; lateral areas granulose. 



Anadenus modestus, Theob. 



With the Sikkim altivagus in the British Museum is the 

 small specimen referred to by Godwin-Austen (Land and 

 Freshwater Moll. India, 1882, p. 54). It has the oblique 

 lines on the back characteristic of section AUivagi^ and also 

 the flattened tail. It is 19^ millim. long; mantle 8 millim. 

 long, respiratory orifice slightly posterior, ^'. e. 5 millim. from 

 anterior border. Sole, lat. 5| millim., median zone broader 

 than either lateral. Colour dull greyish ochreous, with lateral 

 black marbling on mantle (representing broken-up lateral 

 bands) and black lateral bands, irregular in outline, on body. 

 This is very possibly the young of A. altivagus^ but it is also 

 apparently TheobakFs modestus. Ileynemann described a 

 similar form as the young of Schlagintweiti. If the young 

 of altivagus is striped, no doubt the young of a species so 

 closely allied as Schlagintweiti would be similar, and the 

 immature slugs might be very hard to distinguish specifically. 

 There can be no doubt, supposing these striped slugs are 

 juveniles, that Theobald's modestus is the young of altivagus 

 or Schlagintweiti. 



Anadenus Schlagintweiti, Heyn. 



Colour grey, slightly olivaceous, becoming white beneath 

 mantle posteriorly. Neck and head dark above. Sole 

 narrower than in altivagus, median area approximately of 

 equal width to either lateral area. iMantle 24 millim. long, 

 respiratory orifice slightly anterior to middle. Back with 

 flatter ruga3 than in altivagus, but pattern of reticulation the 

 same. These notes are from a specimen in the British 

 Museum marked " Coll. Schlagintweit, Simla to Sulsanpor 

 [Sultanpur, in G.-A. Moll. Ind.], Himalaya," and, apparently 

 in Dr. Ileynemann's writing, '■''Anadenus Schlagintweiti.''^ 



Another specimen in the British Museum from Kulu, 

 Himalaya {Schlagintweit), is also Schlagintweiti, but has the 

 sole more wrinkled and tlie median area narrower ; colour also 

 darker, but the white below mantle conspicuous. 



A. Schlagintweiti is exceedingly closely allied to altivagus, 

 but it may be a good species. It is easily distinguished by 

 its different coloration. 



