.\ 1,1,1 i:i) TO LACEKTA jMUKALIS. 



13 



Iiy lilack, on the upper surface, and three, also sejjarated by black, on each side — 

 I 1 white streaks in all. Of these, the outer dorsal starts from the superciliary border, 

 and is prolonged on the tail ; the upper lateral starts from the posterior corner of the 

 eye, passes above the tym[)anum, and ends above the hind limb; the median lateral 

 originates on the upper lip, passes through the tympanum, above the fore limb, ends 

 on the anterior face of the thigh, reappears on the posterior face of the thigh, and is 

 continued on the tail ; the lower lateral proceeds from the lower lip, extends on the 

 anterior face of tlie fore limb, and reappears on each side of the belly, ending on the 



Texfc-fijjiiro 5. 



« > 





Striation iu Laccrta ai/ilis, var. exujua, joung ((/) ; Acantliudactyhts vnJrjavis, 3"ouiig (/<) ; and L. jxn-ia (c). 



lower anterior face of the thigh. This arrangement is exemplified by a young Z. m/ilis, 

 var. exiffita, assuming the pale brown colour between the black edges of the white 

 dorsal stripes to have been originally white also *, but it is also to be traced, ttiougli in 

 a less primitive condition, in some young of the typical fcn-m of that species. I reganl 

 the disposition of the streaks in the young Acanthodadijliis here figured as due to an 

 autero-posterior reduction in their number, by wliicii their position may be shiftid ; 



* Tilt! ideal primary striation, as seen on the napo of Anuilhodacli/lus, has not actually been observed in 

 L. aijilis, but 1 expect it will be found some day when larger series of youug of the var. exii/iia can be 

 C'Camined. 



