476 ARIONIDJE. 



" Jaw dark chestnut brown, with eight very strong flattened 

 ribs, but the ends (about | mm.) ribless. Lingual teeth normal 

 for the genus in general characters ; central teeth long and narrow, 

 with the ectocones poorly developed ; lateral teeth without or 

 with only poorly developed accessory denticles. Stomach very 

 large, containing vegetable matter, which includes quite large 

 pieces of leaves. Lung normal. Kidney considerably longer than 

 wide. Shell a membranous plate containing minute calcareous 

 granules, much more numerous and smaller than those of Arion. 

 Penis-sac narrow apically, rather abruptly broadening above the 

 middle, the basal part very stout ; the inside walls are strongly 

 plicate, and on one side bear very many tapering fleshy 

 filaments. 



" By the character of the teeth, and also the oblique lateral 

 grooves of the body (except that in A. beebei they are closer 

 together), this resembles A. giganteus, Heynemann, but it differs 

 entirely in the shell. The jaw of A. giganteus has fourteen ribs, 

 whereas that of A. beebei has only eight. The color of the sole is 

 also distinctive. 



"A. beebei cannot be the species named A. insignia by Godwin- 

 Austen, but scarcely described, as that is said to resemble 

 A.jerdoni, and to differ in the character of the dorsal and lateral 

 grooves from A . giganteus. 



" The shell, jaw and teeth readily distinguish our slug from 

 A. altivagus. Pilsbry and Godwin-Austen both show the kidney 

 of A. altivagus as very broadly oval ; in A. beebei it is considerably 

 narrower. I do not find calcareous spines in the penis-sac, but 

 instead very numerous tapering fleshy processes. Pilsbry found 

 minute processes in the specimen he dissected, which he referred 

 to A. altivagus. The penis-sac in our slug is not at all like that 

 figured by Pilsbry ; it is rather similar in type to Godwin- Austen's 

 figure of A. altivagus, but differs in the proportion of the parts. 



" Comparison with the other Indian species does not indicate 

 any close similarity, and the more recently described A. dautzenbergi, 

 Collinge, A. sechuenensis, Collinge, and A. sinensis, MollendorfF 

 are also evidently distinct." (Cockerell.) 



466. Anadenus modestus, Theobald. 



Umax modestus, Theobald, J. A. S. B. xxi, 1862, p. 489. 

 Anadenus modestus, Theobald, Cat. Land and Freshw. Shells Brit. 



India, 1876, addenda, p. i; Nevill, Sci Kes. Second Yarkand 



Mission, Mollusca, 1878, p. 21 ; ibid., Hand List, i, 1878, p. 65 ; 



Godwin-Austen, Moll. India, i, 1882, p. 53. 

 Anadenus {Altivagus} modesttis, Cockerell, The Conchologist, ii, 



1893, p. 192. 



Original description : " Corpore liinaciformi, postea acuminate, 

 colore cinereo, fuscis punctis notato ; dorso duobus lineis macu- 

 losis cateniformibus ornato, a sese et a margine equidistantibus et 

 a pallio usque ad extremitatem extensis, spatio his lineis iucluso 



