444 Mr. Gilbert J. Arrow's Classification of 



minute research has led him to detect points of difference 

 overlooked by others which in insular forms or when 

 from any cause segregation has taken place have a real 

 value. 



In the present paper I have only attempted to correct 

 a few of his errors which have come under my notice 

 in the course of an examination of older authors' types 

 existing in this country. M. Rene Oberthilr, now the 

 possessor of Kuwert's collection, has kindly sent me such 

 of his types as were necessary for comparison. I have 

 examined all the types of Hope, Smith, and Bates, and 

 those of Percheron, Truqui and Kaup in our collections. 



A second purpose of this paper is to enumerate the 

 species of Fassalid/u brought by Mr. H. H. Smith from 

 the islands of St. Vincent and Grenada, so completing my 

 list of the Lamellicorn fauna of those islands so far as it is 

 known. This has entailed the description of one new 

 species. Descriptions of a few other new species in the 

 British Museum collection have also been added. 



The following list comprises the whole of the species of 

 which the types are in the Oxford Museum placed in 

 their modern genera, the names in brackets being those 

 which become synonyms — 



Ceratocupes {Cilia status, Terch.) = fro7iticor7iis, Westw. 

 This is recorded by Percheroii as of unknown locality, but 

 his type bears the label " Hardwickii, Hope. Nepal," and 

 on another label " Bengal," and was no doubt brought 

 from Nepal by Maj. Gen. Hardwicke. The species was 

 described two years earlier by Westwood, from the Melly 

 collection in Ann. Mag. Nat. Hist., 1842, (viii), p. 124. 

 There has been strange confusion about this reference, 



Comacupcs pundifrons, Hope. 



Heliscus (suhcorimtics, Hope) = H. tropicus, Perch. 



Spasalus hopei, Perch. 



Vetm'ius platyrrhimts, Hope. As stated by Hope, the 

 type is from Venezuela. Kuwert has given the Amazons 

 as its habitat, while Bates has put together several Central 

 American forms under this name. Of these all the 

 specimens from Nicaragua and part of those from Costa 

 Rica and Panama belong to V. sinuatocollis, Kuw., and two 

 other specimens I have described later on as V. isthnicus. 

 The remaining specimens from Costa Rica and Panama 

 agree with the short diagnosis of V. 'platyrrhinoides, Kuw. 

 (Bolivia) which I do not consider sufficiently differentiated 



