NATURAL SCIENCES OF PHILADELPHIA. 173 



species, leaving the question of subgeneric division to the future, 

 and to abler hands. 



As some confusion exists in regard to the specimens furnishing 

 the descriptions and figures published in this country, I have 

 taken pains to be sure of the specific identity of each specimen 

 now before me. 



The L. maximum was collected in Newport, R. I., by my friend, 

 Mr. Sam. Powel- It is the same individual figured on p. 408 of 

 my edition of Gould's Invertebrata of Massachusetts. The ex- 

 ternal markings of the animal are conclusive proofs of its identity 

 with the European species. I have, however, made it still more 

 certain by examining the genitalia, which I find agree with those 

 of L. maximus, figured by Lehmann (Lebenden Sehnecken, etc.). 

 I find the dentition agrees also with the figures given by Heyne- 

 mann (Malak. Blatt. X.), Lehmann (1. c), and Goldfuss (Verhl. 

 Naturh. Vereins der Preuss. Rheinl., etc.). 



The L. flavus was collected in a cellar in Burlington, N. J. It 

 not only agrees with the figure in the " Terrestrial Mollusks" as 

 far as its outward markings are concerned, but I find also its 

 genitalia to agree with Dr. Leidy's figure in the same work, and 

 also with the figure given by Moquiu-Tandon (Moll. Fr.). Its 

 dentition agrees with the figures of Heynemann and Semper 

 (Arch. Phil.). 



The L. agrestis was collected in a garden in Burlington, N. J. 

 This species I have also found to agree with the figures of the 

 external animal and genitalia given in the " Terrestrial Mollusks," 

 as well as with Moquin-Tandon's (Moll. Terr, et Fluv. de la 

 France) figure of the genitalia, and Heynemann's and Leh- 

 mann's figure of the dentition ; also with the figure of the geni- 

 talia given by Schmidt and Lehmann. 



The Limax campestris examined was collected in the country 

 near Burlington, N. J., by my friend, A. Ten Eyck Lansing. It 

 agrees with the description and figures in the " Terrestrial Mol- 

 lusks," not only as to its external characters, but in its genitalia. 

 I will here mention that its dentition does not as;ree with that of 

 L. Weinlandi, Heynemann (1. c. p. 212), supposed by that author 

 to be the same species. 



The Limax ffewstoni examined is a typical specimen, given by 

 Dr. J. G. Cooper to the State Collection of California. It was 

 labelled by him. There can be no doubt, therefore, of its identity. 



