li 



KkCUKDS oI the S.A. MlSECM 



115 120 125 130 135 140 145 150 



Chan h. Distribution of • T. icietlii. 



tlie ocular; tlic last-named similarly makes coiUact willi tlie Ihinl ami fourtli 

 labial-. b'our ii|i|ier labials arc present in all Au-tralian species: tbc\- arc 

 u-'iialK' longer tban l)roa<l. T. lahidlis pro\ idini; a noticeable exception. There 

 are no distinct lower labials, the mars^in of the jaw beini,' formed by the anter!(.)r 

 bodv scales. 



Size, ^'llun^ examples arc usnally of ijrcater relati\e ibickness than the 

 adults, and the latter often exhibit considerable variation in this resjject. .^ome 

 species api)arentl\' remain small, others attain to considerable lenj^th. ihii^ 7'. 

 /^ol\(li(nninlnis throws to 717 mm. 7'. (/ry/^iis is an exlremely slender foi'm. its 

 lenijtb ma\ be I2-' times its diameter. T. f^iiu/iiis is. on the other hand, ver\- 

 stout, the length of the type bein.i; but 22 times its diameter. 



Distribution. ' )ur knowledge nf the gCM-raphical distribution of the 

 blind snakes is adversely atiected by several conditions: owing to tlu'ir usually 

 small --ize, subterranean habits, tlieir -uperticial resemblance to worms, and the 

 slight interest the\ e\i>ke. comiiaratively few -i)ecimens are taken : nearly all 



