21 DR. r. V. CARPKNTEH ON TIIK SUn.I.S OF PANAMA. 



.<7I. ? P'ifrlfa, sp. imi. This has the general ajijiearaiice of/*. 

 rii/'/fita, l)nt may he an Anium. 



'■S72. Chiton rinthralita. (Genns indet.) 



373. ChUim dispur, C. B. Ad.; not Lojihyms dispar. Shy. I 

 doulit wluthcr any of the Professor's s})eciniens helong to Sowtrby's 

 species, whicli is black mixed with grey ; area-sculpture very faint; 

 and sides inibricited, not rugnlose. Among the dupHcates were two 

 (if not three) species: — the principal one with side-sculpture in lobated 

 knobs, which may be named Lop/njnis adamsii ; a ^variety with 

 simple knobs ; and a well-marked species without distinct bide areas, 

 which may be called Lophi/rus tenuisculptua. 



374. Chiton Vuridua. Probably correct. 



375. Chiton pulchelhts=. Cullochiton p. + C. eletiensis. 



376. Chiton stoke8ii=^Lophijrus s. 



377. Anemia lampe, C. B. Ad. It is doubtful whether this is 

 identical with the northern species, M. 219. 



378. Anomia tenuis. This is probably the young of the last 

 species, and may give it a name, if new. It is doubtfid how the 

 diagnosis of the scars was made out ; as they were not visible in 

 either of the specimens retained, being encrusted with dead auimal 

 matter. They were not distinct even after its removal. 



379. Anomia, sp. ind. a. Probably the same species as the two 

 last, although far too dead, worn, and young to deci le. See notea 

 on the variations of A. lampe, Maz. Cat. p. 168. 



380. Ostrea, sp. ind. a. The hinge notches of the upper valve 

 fit between corresponding teeth in the lower. Inside rather flesh- 

 coloured ; white, round margin. Scar kidney-sha])ed, dark in one 

 valve, light in the other. A young valve is white, and as pearly as 

 U. iridescens, M. 211. The species is best known by its tendency 

 to make a very broad limb in the exterior coloured part, spreading 

 out into palmations. A very young specimen, though covered above 

 with Meiiibranipurce, shows the characteristic corrugations through. 

 It may stand provisionally as O. panamensis. 



3S1. Ostrea, sp. ind. b. This is ])robablv a variety of O. pana- 

 mensis, but more coarsely grown, so that there is a smaller limb, 

 without j)almations. Wherever the sculpture appears, there are evi- 

 dent traces of the peculiar corrugations. The inside has the same 

 characters, both of hinge, colour, iridescence, and scar. 



382. Ostrea, sp. ind. c. Rather square hinge, without plications ; 

 one shell with an umbonal cavity. Pearly white. One specimen is 

 tinted on the sear, which may become coloured in the adult. It is 

 by no means "pentangular," and is more probably = 0. rvfa, Gld., 

 than O. columliensis, M. 213. 



383. Ostrea, sp. ind. d. The shells are broader than the ]\razatlan 

 specimens of O. virginicn, ]M. 212, probablv from not growing on 

 twigs. The younger shells are very like 0. edulis ; the older ones 



198 



