TENEBRIONIDAE. 385 



This tribe consists of a single p-enus, Apocryplia, of whicli tijree 

 small species from Californiu are known; Ihcy resemble certnin 

 Dyschirius of the Carabidic ; the thorax is g-lobose and densely 

 punctured ; the elytra are sparsely punctured and with a few 

 loug, erect hairs ; they are found on the ground and are rare. 



Tribe XIV.— HELOPIIVI. 



Body generally oblong, sometimes oval, apterous or winged ; 

 liead received in the thorax nearly as far as the eyes, which are 

 transverse, emarginate, and coarsely granulated ; front dilated at 

 the sides, covering the base of the mandibles, truncate anteriorly, 

 separated from the prominent labrum by a short coriaceous 

 clypeus; antenna? gradually thickened externally; mentum small, 

 trapezoidal, anterior portion coriaceous; ligiihi ])roniinent. Flanks 

 of prothorax separated by a margin from the liack. Elytra with 

 narrow or moderate epipleurae. Anterior coxte rounded; middle 

 cox;t3 with distinct trochantin; hind coxie narrowly separated ; 

 intercoxal process triangular; legs tolerably long; tibial spurs 

 small; tarsi pubescent beneath ; the anterior and middle ones of 

 the male usually dilated. 



Our species are numerous, and some are found in each district. 

 They are often of a dark, metallic color, with much lustre; all 

 are to be referred to the genus Helops, and in several of them 

 the flanks of the prothorax are sculptured with deep lines. 



Tribe XV.— DI«^AItIPTIIVI. 



Body elongate, winged ; head deflexed, nearly vertical in re- 

 pose ; eyes oval, prominent, entire, coarsely granulated; clypeus 

 truncate, with a distinct coriaceous border, the sides of front not 

 reflexed ; antennae 11-jointed, slender, gradually thicker e.xter- 

 luilly, the terminal joint oval, a little larger than the tenth ; mentum 

 small, transversely cordiform, narrower at base, supported by a 

 narrow peduncle, apex truncate, and with a coriaceous border 

 between it and the ligula, the latter prominent ; terminal joints 

 of palpi broadly triangular. Prothorax margined at the sides, 

 the apex slightly prolonged ; anterior coxas moderately separated 

 1)y the prosternum, which is not prolonged at tip; mesosteriium 

 oblique, the middle coxae separated and with a distinct trochantin ; 

 inetasternum long, side pieces narrow ; intercoxal process of 

 25 



