Coleopterological Notices. 311 



angular and erect, strongly emarginate posteriorly just before the basal angles 

 of the peduncle ; disk strongly elevated in middle third, with a large fovea at 

 each side in the middle, very coarsely tuberculose and dull. Scutellum ex- 

 ceedingly minute, angulate and attenuate at apex. Eli/tra scarcely as wide as 

 the prothorax and about three-fourths longer ; sides nearly straight ; apex 

 evenly rounded ; base truncate between the humeri which are rounded but 

 anteriorly prominent, each elytron with three moderately elevated discal cost;e 

 the two outer, as well as the lateral edge — viewed laterally — broadly sinuous 

 in the middle ; intervals each with a double series of extremely coarse approxi- 

 mate punctures, the sutural interval with a single series. Under surface dull 

 and roughly scabrous. Length 2.4 mm. 



California (Humboldt Co.). 



A single representative only was taken by the author near the 



bay, probably under loose and greatly decayed bark. The integu- 



* ments throughout, including the femora and tibiee, are clothed with 



very short and sparse, robust, but not squamiform setae, the tarsi 



very finely, sparsely pubescent beneath and nearly glabrous above. 



I.YCOPTIS n. gen. (Lycoptini). 



The very aberrant genus which I have been forced to regard as 

 the representative of a distinct tribe of the Colydiidae, may be essen- 

 tially defined in few words as follows : — 



Sides of the head anteriorly not at all extended and but feebly developed 

 horizontally, the basal joint of the antennae almost entirely exposed from 

 above, although inserted under the sides. Antennae slender, rather short, 

 7-jointed, joints three to six slender, seventh forming an abrupt, elongate- 

 oval, solid club, which is apparently composed of three fused joints with a 

 feeble terminal process possibly representing a tenth joint; antennal grooves 

 not well developed. Eyes rather large and prominent, coarsely faceted. Palpi 

 with the last joint elongate-oval, gradually and obtusely pointed at apex and 

 much longer but not thicker than the penultimate. Mandibles finely notched 

 at apex. Coxae all narrowly separated, the anterior small, transversely oval, 

 gradually pointed externally, the cavities narrowly open behind ; post<.Tior 

 strongly transverse, attaining the margin of the epipleurae. Metasternum 

 large, with a short coarse ante-coxal transverse groove ; episterna not very 

 narrow, gradually diminishing in width posteriorly throughout the length, 

 attaining the coxae, the epimera obsolete. Legs rather slender but short, free ; 

 tarsi tetramerous, the basal joint extremely small, the fourth about twice as 

 long as the first three together ; tibial spurs extremely short. 



The prosternal process is rather narrow and extends behind the 

 coxae, the apex abruptly expanded and received in a small moder- 

 ately deeply impressed excavation of the mesosternum ; its surface 



