1894.] NATURAL SCIENCES OF PHIL,ADELPHIA. 427 



Bothrops erythrurus Cantor. 



Before leaving the Ophidia I add some remarks on the peuial 

 characters of some species which do not enter the present collection, 

 and which I have recently examined. 



The genus Anomalodon Jan (Lioheterodon Bouleuger, from a 

 nom. nud. of Dum. & Bibr.) has the hemipenis deeply divided and 

 covered with minute spines, without large hooks at the base. It is 

 to be referred to the Pseudaspidina? of my Prodromus, approaching 

 the genus Fseudaspis m. of S. Africa. Boulenger has shown that it 

 has the natricine hypapophyses. 



The Australian Dipsas fiisca Gray, differs from the genus Dipsas 

 in the absence of spines from the hemipenis ; the characters are 

 otherwise as in Dij^sas. I propose to name this new genus Liophal- 

 lus, with L. fiiscus as type. 



I propose to separate Drymohius percarinatus Cope from Drymo- 

 bius as the type of a distinct genus under the name of Cacocalyx. 

 It differs from that genus in the structure of the terminal half of 

 the hemipenis. Instead of the usual papillose calyces, there are 

 rows of spines on longitudinal folds, and the apex is covered with a 

 few large, shallow, smooth-edged calyces, which are separated from 

 the spinous portion by a continuous transverse fold, i. e. , the apex is 

 capitate. I have compared this organ with the corresponding ones 

 of Drymohius margaritiferas (type) ; D. pantherinvs ; D. reticula- 

 tus; D. boddaertii, and D. puleherrimus, where they are essentially 

 alike. The genus Cacocalyx is quite different from any other form 

 of Colubrinse. 



The Cyclophis major Guuth., presents the penial characters of the 

 Colubrinse, but has an especial peculiarity not shared by any other 

 species with which I am acquainted. In the proximal internal wall 

 of each calyx is a transverse comb of a few spines. These do not 

 graduate into the spines of the middle of the hemipenis, which are 

 well developed. The borders of the calyces are serrate to papillose. 

 As this type is clearly not referable to any known genus, I propose 

 to distinguish it by the name of Entechinus. It is evidently not 

 very nearly related to Liopeltis and Cyclophis of N. America. 



The genus Macroprotodon (Guich.) has the apical region of the 

 hemipenis calyculate, and the papillae at the angles of the calyces 

 are spinous (i.e., ossified) to near the tip. There are numerous 



