CALCODES, 205 



and devoid of luiir or sota>, the hoad and tlio sides of the pro- 

 notum entirely o|)a(|ue and the elytra moderately shinintr, 

 exce])t at the niar»iins. Th(i j)rosternuin rounded hehiiid and 

 not ])roduced, hut occasionally there is a small conical process. 

 The elj-tra not very broad, but have well-marked, flattened 

 lateral margins. The legs not very slender. 



$. Oval and convex, not very broad. The head is closely 

 punctured in front and very sparsely l)ehind, with the canthus 

 rather prominent laterally, but not angular. The inaiidiljles 

 are broad, but have acutely produced tips and about four blunt 

 teeth. Tlie pronotum is hnely and tlensely giamdar, sometimes 

 lather shining in the middle and liglitly punctured tliere, the 

 sides always completely opaque. The front angles ai-e very 

 blunt, the lateral margins gently rounded to well beyond the 

 middle, where they are strongly but bluntly angulate, and then 

 concave to the hind angles, which are well marked ))ut not 

 shai-j). The elytra are very smooth, with the sides and a[)ices 

 opaque, the outer edges gently rounded. The mentum is 

 closely rugose and bare and has on each side a strongly elevated 

 ol)lique curved ridge. The metasternum and abdomen any 

 lather closely punctured at the sides. 



(J. Elongate and rather i)arallel-sided. The head is densely 

 granular and opaque, without punctures, emarginate in front, 

 the canthus rather sharply angular laterally but not very 

 prominent, the sides of the head very gently rounded behind 

 the eyes. The mandibles are very short and never reach 

 a length much greater than that of the head. The pro- 

 notum is finely and closely granular, entirely opaque at the 

 sides, very convex in the middle, scarcely shining there. The 

 front angle is rather blunt, the lateral margin gently rounded 

 to much beyond the middle, where it is strongly angulate but 

 not spiniform, and concave to the hind angle, which is rather 

 sharp. The elytra are rather narrow, with the sides nearly 

 straight ; the surface is very smooth. The mentum is closely 

 clothed with short erect reddish-yellow hair. The metasternum 

 and abdomen are scarcely ])unctured. The legs are very little 

 more slender than those of the female, but the s])ur of tlie front 

 tibia and the outer s])urs of the middle and hind ti})i;x> are very 

 short and hooked. 



Variation of the mule. The mandibles of small specimens 

 are about as long as the head, narrow and rather straight, 

 curved only towards the tij) and entirely serrate at the imier 

 edge. In larger s])ecimens the mandibles are rather compressed 

 laterally and carinate on the upj)er surface, the carina ending 

 abruptly before the tip. In well-developed examples the end 

 of the carina is elevated into a sharp erect tooth. A slight 

 conical elevation occurs at the base of the mandible close to the 

 front margin of the head and in the rare large phase, called 



