276 Mr. C. J. Gaban on lafvi& of Tridenotonta childreni, 



sides, Hi mui. broad, punctate above, reddish-brown with front 

 margin black, clypeus and epistome * not separated, the latter 

 slightly membranous at the front edge, labrum distinct, transverse 

 with obtusely rounded front margin fringed with hairs ; antennae 

 placed laterally on a slight projection of the head, 3-jointed, the 

 3rd joint very short and narrow, the 2nd much shorter and 

 narrower than the 1st ; on the vertex of the head a sutural line, 

 beginning at the occiput, extends a very short distance forwards in 

 the middle and then branches into two curved lines forming a 

 horse-shoe-shaped impression, from the anterior ends of which, 

 transverse lines may be seen running to the sides of the head to end 

 just behind the antennal supports, the form and course taken being 

 very much the same as they are in the larvas of Pytho and Pyrochroa ; 

 there are no ocelli visible ; mandibles large, curved, each with three 

 cusps or teeth at the apex, the left mandible has two teeth on 

 the inner edge ; the maxilhe have the usual basal joint or cardo, a 

 rather long and broad stipes which carries a 3-jointed palp, and 

 a rather broad obtuse inner lobe, which near the middle is provided 

 with a horny tooth bifi<l at the end, the dorsal division of this tooth 

 being slightly longer than the ventral, the lobe is furnished also with 

 some stiff setae ; mentum longer than broad, somewhat trapezoidal 

 in form, labial paljji 3-jointed, ligula narrow ; the hypopharyx 

 forms an arch on the dorsal side of the mentum and is produced in 

 front as a flat plate with a slightly emarginate border. 



Prothorax widest a little behind the fi'ont border, being there 

 13^ mm. broad, narrowed at the base, where it is only 11 mm. broad ; 

 its length equal to that of the head measured from the occiput to the 

 front margin of the epistome : the surface smooth and impunctate, 

 yellowish-white with a few brownish patches ; prosternum smooth. 



MesothoraXy 11 J mm. broad across the middle, much shorter than 

 the prothorax, and slightly shorter than the metathorax ; it carries 

 on the tergum a transverse series of short, small longitudinal carinsB 

 near the front margin, and a set of smaller tubercles forming an 

 obli-iiue patch on each side ; the sternum is crossed by a narrow 

 slightly arcuate, pale band or depression in front of which is an area 

 covered with small corneous granules, while behind it there are on 

 each side a few more elongate granules or carinsc. 



Metathorax, 11 mm. broad across the middle, a little longer than 

 the mesothorax, but similar to it in structure and in the manner in 

 which the small grauules and carinse are disiDosed on the tergum 

 and sternum. 



* I use the term epistome to denote the piece, often separate, to 

 which the labrum is attached. 



