SCHMIDT, THE HERPETOLOOY OF PORTO RICO 195 



The coloration is highly interesting. The three specimens from Porto 

 Pico agree with the description of Stejneger (1904, p. 611) in the pres- 

 ence of a narrow black border above the dorsolateral light line. In the 

 specimens from Culebra this is increased anteriorly to include the whole 

 of the .head, neck, and shoulders, leaving, however, a sharply defined 

 median light line from the frontal to the shoulders, where it merges into 

 the dorsal color. This pattern is approximated also in the specimen from 

 Mona Island. It is evident that the type of Euprepes semitceniatus Wieg- 

 mann described by Stejneger (1904, p. 610) corresponds accurately with 

 the Culebra specimens. It is therefore possible that the Porto Rican 

 form may be sufficiently distinguishable to merit specific or subspecific 

 designation, in which case sloanu would be restricted to the form in the 

 Virgin Islands (including Vieques and Culebra) and M. nitida Garman 

 would be applicable to the Porto Rican and Santo Domingan form. In 

 view of the close approach of the Mona specimen to those from Culebra, 

 I prefer to retain, for the present, the use of sloanii for the entire series. 



The measurements of the only specimen with a complete tail are as 

 follows : 



A. M. N. H. 

 No. 14007 



Length 180 mm. 



Body 67 " 



Length of head 15 " 



Breadth of head 10 " 



Foreleg 17 " 



Hind leg 25 " 



The largest specimen (from Culebra) measures 90 mm. from snout to 

 vent. 



Typhlops Oppel 



Typhlops richardii Dumeril and Bibron 



Ti/phlops richardii Dumeril and Bibron, 1844, Erpetol. Gen., VI, p. 200. 



Typhlops lumbricalis Stejneger, 1004, Rept. U. S. Nat. Mus., 1002, p. 684, figs. 

 141-144. 



Typhlops lumbricalis (part) Barbour, 1914, Mem. Mus. Comp. Zool., XLIV, 

 p. 322. 



Nineteen specimens of this species were collected- at Bayamon. 



The common species of Typhlops in Porto Eico has been referred to 

 T. lumbricalis by all authors since the publication of Boulenger's "Cata- 

 logue of Snakes" (1803). The large series now before me appear to 

 warrant a distinction of the Porto Pican form, for which T have used the 



