214 COCKERELL AND COLLINGE : CHICK-LIST OF SI. CCS. 



p. ir. L. tenellus. Genus uncertain ; the name cannot 

 be certainly applied to Limax tenellus, Auctt. It 

 is greenish white, mantle yellowish, head and 

 tentacles black. 

 391 a-c. Moquin-Tandon's A. flavus, with three varieties belongs to 

 intermedins. 

 392. Priority demands the use of the earlier name paladilhianus, 

 Simroth remarks on the close affinity of this with inter- 

 medins, and there seems nothing to separate it other than 

 as a subspecies. 

 398-399. It is doubtful whether these two forms should take even 

 sub-specific rank. In all probability, circumscriptum placed 

 as a synonym of fascial 'us, is the same as ambiguus; and 

 the forms named s ubfuscus ( = the British representative of 

 neustriacus) flavescens and griseus belong rather to ambiguus 

 than to fascia tus proper, judging by the character of the 

 keel, which in these is lost in the adult. For further 

 observations see Mr. Collinge in Conchologist, 1892, vol. ii., 

 pp. 77-80, where an alternative and possibly better arrange- 

 ment of the varieties is give 

 402-403. Mr. 1'ollonera kindly sent me A. mortilleti from Rosazza, 

 Piemont, and A.spezice from Maccugnaga, Piemont. I did 

 not dissect them, but judging from their appearance, they 

 might well be the same species. Mr. Pollonera states (in 

 litt.) that A. spezice is smaller than mortilleti, and its 

 mantle is also proportionately smaller. 

 Letourueuxia. Opinions differ about this. Heynemann in 

 1882 said it was scarcely distinct from Arion ; Pollonera 

 gives it as a sub-genus of Geomalacus; and now Simroth 

 places it as a valid genus. 

 410. According to Simroth. moreleii may not be distinct from 



numidica. 

 413. Geomalacus pliocenicus, Sacco,from Piemont (Upper Pliocene), 

 should from its locality belong to the Letourueuxia group, 

 which may formerly have inhabited Italy, and have been 

 driven south during the glacial epoch. Prom the fossil it 

 would be impossible to decide this one way or the other, 

 and the generic reference merely rests on the balance of 

 probabilitv. 



1 ' Having seen ail the varieties excepting J. of this species 397, I do not agree with the 

 arrangement adopted in the present list. Miser, Poll., is as distinct from griseus, Cllge., as 

 neustriacus, Mali., or atripunctatus, Ckll., are; flavescens, Cllge., is a variety in which the 

 yellow predominates, neustriacus is quite a dfferent thing. The two are possibly brought closer 

 together by subfuscus, Koeb. I say possibly, for I never could distinguish wherein this latter 

 differed from neustriacus. — W. E. C. 



