212 Proceedings of the 



fulvous pubescence, which occurs also sparingly on the thorax. 

 Head coarsely granular, with a transverse ridge having a 

 granular elevation on each side in front, a somewhat trian- 

 gular granular elevation extending backwards behind this. 

 Mandibles short, like those of the female of Chiasognathus 

 Grantii, and obtusely rounded, not longer than the head ; inner 

 side straight, denticulated, fitting to opposite mandible ; outer 

 margin raised, so that when the mandibles are closed they have 

 the form of a shallow cup ; their upper side is coarsely granular, 

 lower side rounded, punctate, and pubescent ; an oblique sharp 

 ridge extends along the posterior half of the upper side. Eyes 

 as in the male. The antennae and palpi are comparatively 

 shorter and thicker than in the male. Thorax transverse, 

 and of a similar form, but not sloping so rapidly back to the 

 projecting posterior angle, making the whole thorax broader 

 and larger. A large depression on each side in front, between 

 the eyes, and large depressions in each of the posterior angles, 

 leaving a smooth elevated figure, of the shape of a widely ex- 

 panded V, on the disk, which shows indications of a dorsal 

 longitudinal line ; deeply and densely punctured on the sides ; 

 more sparsely, but still deeply, on the disk, which is polished. 

 Elytra long and broad, somewhat expanded behind, wholly 

 covered with minute punctures, scarcely visible to the naked 

 eye, but coarser than in the male ; also covered with larger 

 corrugations, mostly running transversely, and some of which 

 exhibit a tendency to longitudinal striation. The tibiae are a 

 good deal shorter than in the other species. The anterior tibiae 

 are broader, and the last two teeth are larger and more pro- 

 minent. The middle tibiae are denticulated, one tooth at least 

 being sharp and prominent. The posterior tibiae are almost 

 simple, the denticulations doing little more than roughening 

 their edge. 



The above two insects are the only species of this genus 

 which I have received, and as the one form is that of a male 

 and the other that of a female, I assume them to be male and 

 female of the same species. Perhaps this is jumping a little 

 too rapidly to a conclusion ; but they do not differ more from 

 each other than the sexes of the other species do ; and the fact 

 that I have received considerable numbers of each, and never 



