netc genera and species of Colcoptera. 17 



front ; maxillaiy palpi long, the apical joint ovoid ; labial 

 palpi very small, the apical joint small, subnlate. Head 

 free, broad; clypeiis transverse, horizontal, deflexed and 

 transversely channelled in front ; eyes prominent ; an- 

 tenna3 11 -jointed, the 1st joint elongate, slightly bent; 

 the 2nd globular ; the 3rd longer than broad ; the 4th 

 to 10th scarcely longer than broad, narrowed at their 

 bases. Thorax transverse, narrowed in front, bisinuate 

 at the base. Elytra oblong, bluntly rounded at the apex. 

 Legs slender, the last joint as long as the four preceding 

 taken together. Prosteraum truncate in front, slightly 

 produced behind, and received into a longitudinal impres- 

 sion in the mesosternum. Abdomen composed of six 

 segments, of which the 4th is very short, the 5th emargi- 

 nate, the 6th very small. 



From this description it will be seen that tlie present 

 insect only differs from Psephenus in the form of the 

 clypeus, which is well developed, distinctly separated from 

 ,the head. I at first took this part for the labrum, but 

 I believe I am correct in calling it the clypeus; the 

 labrum is very small and transverse, and is hidden by the 

 clypeus. The antenn{i3 appear more loose in the joints 

 than in Psephenus ; they are not in good condition in the 

 specimen described. 



In this, as in Psephenus, there are only five well-deve- 

 loped segments to the abdomen ; it is possible, hoAvever, 

 that the abdomen may have seven segments in this genus 

 also, but I cannot trace them. 



Mat<sopsephus nitidipennis, sp. nov. 



Brevis, latus, depressus, nigro-piceus ; capite thoraceque 

 velutinis; corpore subtus piceo-testaceo velutino; femori- 

 bus subtus piceo-testaceis. 



Long. 2^ lin.; lat. \\ lin. 



This species differs chiefly from Psephenus Lecontei in 

 being smaller, relatively shorter, the thorax less naiTOwed 

 in front; the elytra relatively shorter and more rounded 

 at the apex, and not pubescent. Head fi-ee, rather broad, 

 eyes prominent, clypeus pitchy. Thorax nearly twice as 

 broad as long, gently convex, velvety, slightly lobed over 

 the head, nai-rowed in front (the sides gently arcuate), 

 broadest at the posterior angles, which are blunted ; the 

 base is broadly bisinuate ; towards the front margin there 

 are indications of two dull red spots, Scutellum small, 



TRANS. ENT. SOC. 1876. — PART I. (MAY.) C 



