370 MR, G. A. BOULENGER OX THE 



Nasal not coniplctel}' divided ; 20 scales round middle of 



body; praiocnlar narrower than ocular T. microcephaUis. 



Nasal not completely divided ; 24 scales round middle of 



l)ody T. miicronatus, 



b. Snout with obtusely angjular horizontal edge; nasal semi-divided; prje- 



ocular much narrower than ocular. 

 Diameter of body 44-50 times in total length ; 20-22 scales 



round middle of body T. hoettgeri. 



Diameter of body 39 times in total length ; 26 scales round 



middle of body T. decorsei. 



c. Snout with sharp horizontal edge ; nasal com- 



pletelj' divided ; diameter of body 52-68 times 

 in total length : 20 scales round middle of body. T. arenarius. 

 ~B, Eyes hidden ; nasal incompletely divided ; diameter 



of body 46 times in total length ; 24 scales round 



middle of body T. madagasca rien sis. 



II. PriBOCular absent ; eyes hidden ; snout with sharp 

 horizontal edge ; nasal completely divided ; dia- 

 meter of body 71-78 times in total length ; 20 

 scales round middle of bodj'^ T. grandidieri. 



1. Typhlops braminus. 



Eryx hraminus Daud. Hist. Rept. vii. p. 279. 

 Tijphlo2)s braminus Bouleng. Cat. Sn. i. p. 16. 

 Southern Asia ; islands of the Indian Ocean ; South Africa ; 

 Mexico (probably transported by humaji agency). 



2. Typhlops comorexsis Bouleng. Ann. &. Mag. N. H. (6) iv. 

 1889, p. 361, and t. c. p. 21. 



Comoro Islands. 



3. Typhlops microcephalus "\Verner, Jahresh. Ver. Nat. 

 Wiirttemb. Ixv. 1909, p. 60. 



Madagascar. 



4. Typhlops mucronatus. 



Typhlops (Ophthalmidion) tnucronatus Boettg. Zool. Anz. 1880, 

 p. 279, and Abh. Senckenb. Ges. xii. 1881, p. 438, pi. i. %. 1. 

 Ty2)hlops vnicroiiatits Bouleng. t. c. p. 37. 

 Mndngascar (Nossi Be). 



5. Typhlops boettgeri Bouleng. t. e. p. 39, pi. ii. fig. 6. 

 Madagascar. 



6. Typhlops decorsei Mocquard, Bull. Mus. Paris, 1901, 

 p. 255. 



Madagascar. 



7. Typhlops arexarius, 



Onychocephalus arenarius Grandid. Ann. Sc. JSTat. (5) xv. 1879, 

 art. 20, p. 9. 



Typhlops arenarius Bouleng. t. c. p. 49. 

 Madagascar. 



