REVISION OF TENEBRIONID SUBFAMILY CONIONTIN^ 57 



bined, obliquely prominent internally at tip, two to four transverse, 

 rapidly diminishing in size. Habitat insular. [Type Coniontis 

 lata Lee . ] Coniontides 



Posterior angles of the prothorax feebly produced posteriorly, the 

 thoracic base frequently subtruncate ; anterior tarsi as in Con- 

 iontides 10 



Posterior angles not at all produced, the thoracic base transversely sub- 

 truncate ii 



10 Eyes transversely reniform, entire, moderately coarsely faceted 



as usual ; body larger in size as a rule. Habitat widely extended 

 from eastern Colorado to British Columbia, San Diego and the 

 islands off the Pacific coast. [Type C. viatica Esch.]. 



Coniontis 



Eyes completely divided ; body smaller, the legs and antennaB shorter. 

 Habitat nearly as in Coniontis, excepting the immediate coast of 

 the Pacific. [Type Coniontis obesa Lee.] Coniontellus 



1 1 Body small in size, oblong, the eyes as in Coniontis; legs longer, 



the tarsi long and filiform, the four basal joints of the anterior 

 subequal and slightly elongate, the basal joint of the posterior 

 relatively much shorter than usual, but little longer than the next 

 two combined ; mesosternum scarcely so much as impressed on its 

 anterior slope ; palpi and antennae elongate and slender; frontal 

 margin of the head more nearly as in Eusattus. Habitat north- 

 ern Pacific coast regions. [Type C. rectus Csy.] Conisattus 



12 General habitus as in Coniontis but muricately and generally 



densely punctured, the front and eyes similar ; base of the protho- 

 rax feebly and very gradually produced backward at the sides ; 

 legs, antennas and palpi as usual; anterior tarsi moderate, the 

 basal joint as long as the next two combined, strongly and rapidly 

 dilated and very obliquely, sinuously truncate at apex, the inner 

 angle pronounced and prominent though obtuse, the inner surface 

 apically impressed, joints two to four subequal, feebly transverse. 

 Habitat insular. [Type C. punctulata Horn] Coelotaxis 



The only one of the above genera not represented before me 

 at present is Eusattodes, founded upon a very rare species in- 

 habiting the lower extremity of Lower California near Cape San 

 Lucas. Coelotaxis makes the closest approach to the Coelini in 

 sculpture, retraction of the scutellum and form of the first ante- 

 rior tarsal joint, but is a true Coniontid nevertheless. Coni- 

 pinus Lee., was founded upon Eusattus dubms, a very small 

 oblong convex species, but I cannot find any structural character 

 to distinguish it from the other members of the true Eusattus, 

 except a more oval and less pointed form of the last antennal 

 joint. At first it seemed possible that its smooth surface and 



Proc. Wash. Acad. Sci., April, 1908. 



