Goleopterological Notices, VII. 493 



to eight increasing graduall}^ and slowly in width, about as long 

 as wide and subglobular, the eighth distinctly wider than long, 

 oval ; ninth about f wider than the eighth and but little narrower 

 than the tenth, both moderately transverse ; eleventh nearly as 

 long as the two preceding. Prothorax quite distinctly longer 

 than wide and about ^ wider than the head, widest at about 

 apical third, the sides evenly and broadly rounded and gradually 

 convergent to the base, the basal angles obliterated ; surface 

 evenly convex throughout. Elytra elongate-oval, ^ longer than 

 wide, more than twice as long as the prothorax and not more than 

 ^ wider, widest and just visibly more arcuate at the sides at basal 

 ■| ; sides parallel and broadly arcuate, the base but little wider than 

 the thoracic base ; subhumeral impression narrow, long, linear and 

 distinct, the humeral plica fine and strong ; outer fovea wholly ob- 

 solete, the inner distinct ; subsutural impressions vei'y feeble, the 

 suture quite strongly elevated toward base, the ridge expanded 

 slightly at the basal margin. Legs rather short, the anterior 

 femora quite strongly, the intermediate moderatel}^ and the pos- 

 terior feebly, clavate. Length 0.85 mm.; width 0.28 mm. 



California. The sex of the individual described is not deter- 

 minable. 



Opresini. 



The remarkable succession of minute species which constitute 

 this tribe are only beginning to be known, and almost all the types 

 here referred to are due to the patient and skillful collecting of 

 Mr. Schmitt, within a single limited section of country among the 

 mountains of Pennsylvania, to which I have already alluded. 

 Among the other tribes with the fourth palpal joint subulate and 

 oblique, they may be known at once by the rather long proster- 

 num before the coxae. They are assignable to three quite distinct 

 genera, which may be briefly defined as follows : — 



Eyes median; neck strongly constricted; antennal cavities narrowly separated; 

 pronotum impressed at base. 

 Scutellum completely invisible and covered by the pronotum, the elytral 



suture not modified Opresus 



Scutellum distinct; elytral suture elevated and enveloping the scutellum. 



Delius 



Eyes anterior and less developed; antennal cavities more widely separated ; 



neck moderately constricted; pronotum not impressed at base; scutellum 



distinct Neladius 



Annals N. Y. Acad. Sci., IX, May, 1897.— 33. 



