Miscellaneous. 303 



(2) There is, I think, uo doubt about the slugs I described being 



Blainville's types ; nor are these the only British-Museum 

 slugs described by Blainville. The Museum is mentioned in 

 the original paper, 



(3) It is very difficult to say whether inaccuracy of description, 



when there is no doubt what was intended, ought to condemn 

 a name. If so, there will have to be considerable slaughter 

 of the genera described by early authors, or, for that matter, 

 by some recent ones. Philomycus, which Mr. Pilsbry thinks 

 might be ado]ited, was also inaccurately defined. 8o far as 

 is known there is no slug in existence really agreeing with 

 the original descriptions of Limacella or PhUomycus taken 

 literally. 



(4) Limacella, Brard, if it is anything, is Limax of modern authors, 



not Agriolima-v. But a genus founded for the shells only of 

 species of the Linnean Limax cannot be recognized as valid, 

 and the only authors who have adopted it are Dr. Jousseaume 

 (1876) and Dr. Turton, The former writes Limacdla for 

 Limax, auctt., and Limax ior Arion; while Dr. Turton (1831) 

 kept the name for the shells of Limax and allied genera, 

 though spelling it Limace.llus. We are told, for instance, 

 that Limaccllus panna, Brard, is " found in the Limax 

 ona^ximus," as though it were a sort of parasite I 



(5) I think it nearly certain that my Limacella nehulosa is Rafin- 



csque's species E. nehulosus ; but if so, of coui'se that author 

 described it incorrectly. Mr. Pilsbry will observe that I 

 have given the reference with a querj-. 



While on the subject, it may be well to mention that there is a 

 figure and description of Limacella lactiformis (as Elfortiana) in 

 Knight's ' Pictorial Museum of Animated Xature,' vol. ii, and 

 fig. 2598. The figure is very bad, being a rough copy of that in 

 Man. de Mai. ; but the generic description, so far as it goes, is 

 accurate. T. D. A. Cockeeell. 



3 Fairfax Eoad, Bedford Park, Chiswick, W., 

 February 3, 1891. 



Preliminary Diagnoses of Four new Mammals from East Africa. 

 By Oldfield Thomas. 



Nyctinomus lohatus, sp. n. 



Allied to and of the same size as N. Ueniotis, llaf. {N. Cestoni, 

 Savi), but distinguished by its much larger ears, tragus, and anti- 

 tragus, by the thinness of the ear-membranes and keel, and by its 

 belly being pure white. Forearm 03 milliui, 



llah. Turqud, tSiik, inland British East Africa. Coll. F. J. 

 Jackson, Esq. 



