136 



4. Description of Two New Species of Pinna. 

 By Sylvan us Hanley, F.L.S., etc. 



1. Pinna Chemnitzii. P. testa magna, subventricosa, oWbacea t 

 carina centralis experte, costis (circiter 14) anyustis rotun- 

 datis et plerumque muticis ornata ; ventrali triente fere Icevi- 

 yato,juxta umbones solum oblique pauciplicato : maryine dor- 

 sali valde incurvato, plerumque squatnis pectinato : extremitate 

 p)ostica lata, subtruncata, in/erne subrotundata : maryine ven- 

 trali postice cum maryine dorsali parallelo, antice abrupte 

 ascendent e. 



Long. 5 pol., lat. 12 pol. et supra. 



Hab. Insulse Philippine (Cuming). 



j\lus. Hanley, Cuming. 



Chemnitz has very fairly delineated (Conch. Cab. f. 770) this 

 species as the pectinata of Linnaeus, to which shell, indeed, it bears 

 much resemblance. A few raised strise succeed the distant ribs. 



2. Pinna Rumphii. P. testa hand magna, subtrigona, incurvato- 



cuneiformi, nitida, cornea, in medio carinata, obsolete cuntata 

 (costis muticis anyustis postice evanidis), j)ostice sublceviyata, 

 marginem ventralem versus late et oblique plicata : maryine 

 dorsali iitermi, et valde incurvato ; ventrali sinuate : extremi- 

 tate postica inferne subrotundata. 

 Long. 3 pol., lat. 6^ pol. 

 Hab. Insulse Moluccas. 

 Mus. Hanley, Cuming. 



In the forty-sixth plate (figures I, K) of his ' Thesaurus,' Rum- 

 phius has very clearly indicated this somewhat scarce Pinna, which 

 exhibits such peculiar characteristics as to render its determination 

 an easy process. 



5. Proposal to separate the Family of Salamandrid.e, 

 Gray, into Two Families, according to the form of 

 the Skull. By Dr. J. E. Gray, F.R.S., V.P.Z.S., Pres. 

 Ent. Soc, etc. 



In the Catalogue of Amphibia in the British Museum I placed 

 all the Salamanders which have teeth on the inner side of the hinder 

 edge of the palatal bone together into a single family, under the name 

 of SalamandridtB. 



Having lately procured the skulls of several of the genera so 

 united, and also examined M. Gervais and M. Dnges' papers in the 

 * Annals of Natural Sciences,' in which the skulls of several other 

 genera and species are figured, I am now induced to propose to di- 

 vide the genera into three sections or families thus — 



For in a group which offers so few permanent characters for the 

 separation of the genera and species, and which presents such differ- 



