Coleopterological Notices, VII. 501 



behind the thoracic angles, and the subhumeral impression 

 strongly modified or absent, sometimes taking the form of a long 

 impressed line, the inner fovea well developed and always spongy- 

 pubescent, this being one of the most constant peculiarities of the 

 tribe and the one which declares most emphatically its relation- 

 ship with IS'euraphes. 



Mesosternum carinate, the mes-epimera dilated, prominent and 

 ciliate as usual, the metasternum very large, with the episterna 

 entirely covered by the elytra. Hind coxae rather widely sepa- 

 rate'd and extending fully to the sides of the body. Legs rather 

 slender but short, the femora usually feebly or moderately cla- 

 vate, the hind tarsi moderate in length, with the first four joints 

 subequal, the fifth unusually short and subequal to the two preced- 

 ing in length, the ungues moderate. 



The consistency of general form and habitus throughout this 

 genus is very remarkable, and species within the various sub- 

 genera are determined more by the summation of a large num- 

 ber of gradial differences, than by abrupt and radical divergencies 

 of structure. It is for this reason that marked departures in 

 structure are of much gi*eater weight than they would seem to 

 possess when the tribe is compared, for example, with the Eucon- 

 nini, and, when a general revision of the Cephenniini is written, it 

 will probably prove necessary to subdivide it generically, but in 

 view of the paucity of material known from this country, it will 

 suflBce for the purposes of this revision to merely indicate the two 

 subgenera as follows : — 



Eyes well developed ; labrum small, semicircular ; elytra without a long 

 acute lateral edge behind the thoracic angles but with a longitudinal im- 

 pressed discal line at base, rounded at tip conjointly, concealing the dorsal 

 pygidium ; mesosternum with a rounded, impressed and scabrous area an- 

 teriorly at each side ; tibise normal ..-. I 



Eyes wanting ; labrum short, transverse and truncate at apex ; mandibles less 

 developed ; elytra with a long, acute and prominent side margin behind the 

 thoracic angles, without a discal impressed line, the spongiose basal fovese 

 larger and very conspicuous, the surface subdepressed toward base, the apex 

 subtruneate, exposing a dorsal pygidium which is more declivous than in 

 allied European species ; mesosternum without trace of the depressed 

 scabrous areas; tibise strongly swollen toward tip 11 



The first subgenus has occurred thus far only near the Atlantic 

 coast line, the second in the vicinity of San Francisco, Cali- 

 fornia. The species known to me are as follows : — 



