228 



BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



while in others the numerous dots are reddish brown instead of black- 

 ish. No. 23897 is densely spotted with blackish underneath, especially 

 under the tail and throat. 



Habitat. — The s])ecies, of which I consider the Bonin Island speci- 

 mens to represent a separable form, is now distri})iitcd in several 

 slightly deviating varieties or subspecies over nearly the entire tropical 

 island world in the Indian and Pacific oceans, including Australia. It 

 is also foimd locally on both the eastern and western coasts of Africa. 



Whether the present form is found outside the Bonin Archipelago 

 it is impossible to say at present. The one found in the Hawaiian 

 Islands is characterized by a greater number of scale rows, normally 

 28 to 30. 



In the Bonins it has been collected in the largest island of each of 

 the two southern groups. 



List of spccivwns of Cryptoblrpharus iiiyropKnckitus. 



a P. 227. 



b Description, p. 226. 



<■ Sci. Coll. No. 



d Figs. 196-198. 



Family LACERTID.^. 



Pleurodont lizards with scaly or j^apillose plicate tongue ; lower sur- 

 face with sc|uarish scales in longitudinal and transverse rows. 



An Old World family, mostly found in Africa and the western Pale- 

 arctic region. It is absent in Madagascar and Australia, and in south- 

 eastern Asia it is only represented by the genus Takydromus, which is 

 peculiar to that part of the world. Peripheral representatives of two 

 other genera occur in the continental area covered by this work, one 

 of these eA^en reaching the island of Sakhalin. 



The species of this family are chiefly terrestrial in their habits. 



KEY TO TIIK (JENEUA OF I^ACKRTTD.K OCCURRTNO IN .T.MWN .\>il) ADJACEiXT TERRITORY. 



«' Inguinal pores only Diki/drovius, j). 229. 



«'- Femoral ])()res only. 



b^ Lamellye on underside of digits keeled Ercrnias, p. 247. 



b- Lamellae on underside of digits smooth Lacerta, p. 251. 



