40 



Nils Rosén 



Number of ven trais, , 



151 



152 



153 



154 



155 



15(i 



157 



158 



159 



160 



161 



162 



163 



164 



165 





1 



2 



0 



3 



2 



2 



3 



3 



4 



0 



1 



0 



3 



2 



1 



Number of subcaiidale 



27 



28 



29 



80 



31 



32 



33 



34 



35 



36 





1 



1 



1 



4 



4 



4 



3 



3 



0 



2 



Fam. Colubridae. 



Liophis (?) rubescens, Cope. 



Diadopliis rubescens, Proc. Amer.' Philos. Soc, Vol. 22 (1885) p. 403. 



Cope described a new species from New Providence, naming it Diadophis 

 rubescens. Boulenger referred it to Dromicus angulifer, but Stejnkger (18) writes 

 that it is very possible that it is a species closely allied to Liopis [Leimadopis) andreae, 

 Reinhaud & LüTKEN. I have not seen the species, but to judge from Cope's 

 description there seems to be a difference in the scutellation of the head, e. g. the 

 shape of loreal and first temporal and their relations to other plates. 



Dromicus angulifer, var. vudii, Cope. 



Alsophis vudn, Proc. Acad. Nat. Sc., Philadelphia, Vol. 14 (1862) p. 74. 



Cope described this form from New Providence, under the name of Alsophis 

 vudii. Later on he changed the generic name to Halsophis. Boulpjngeu in his 

 Catalogue (II p. 120) referred it to Dromicus angulijer Bibron from Cuba, but 

 Stejnegeb having found a constant difference in the number of the ventral plates 

 recognized it (18) as a form distinct from the Cuban species, using the name 

 y^angrdifer viidri». According to Stejneger, the number of the ventrals is in the 

 Bahama specimens between 158 and 171, 164 being the average, in the Cuban ones 

 between 164 and 180, averaging 171. Barbour (2) agrees with Stejneger in sepa- 

 rating the two forms. In the specimens he has examined, the number of the ventrals 

 was between 159 and 171. Barbour considers that D. vudii differs from D. angulifer 

 even through a greater variation of the colour. In 15 specimens I have collected, 

 the number of the ventrals varies between 162 and 171, thus it seems as if there 

 was a lower number of ventrals in the Bahama specimens. I have not found an}^ 

 considerable variation of the colour, the only one is a ligther or darker belly. One 

 specimen is almost black. Untill further material for comparision is collected, I 

 think it best to regard the Bahama form as a variety of D. angulijer. 



* * 

 * 



I have given above an account of all species of reptiles described from the 

 Bahamas, together with remarks about the distinctness of some of them and notes 

 about some species, not or insufficentlj^ described before. In order to make the 

 discussion about the origin of this fauna easier and at the same time to show the 



