278 MEMOIRS ON THE COLEOPTERA 



Ophistomis ochreipennis n. sp. Much shorter in form than luteicornis, 

 the fine sculpture nearly similar but much less dense on the prothorax, 

 pale ferruginous, the basal part of the head broadly black from eye to 

 eye; prothorax (cf ) bivittate with black as in that species, without trace 

 of vittae (9 ); elytra pale ferruginous throughout, except the sutural and 

 external entire black beading and a nubilous fuscous indefinite area near 

 apical fourth; anterior legs pale, with piceous tarsi, the intermediate 

 with nubilously black femoral and tibial apices and wholly deep black 

 tarsi, the posterior black, the tibiae gradually pale basally and the femora 

 pale, with blackish apex; head as in luteicornis, except that the eyes are 

 not so developed, the tempora larger, though similarly very oblique and 

 arcuate; antennae very slender, deep black throughout, the sensitive 

 areas as in eversa; prothorax formed nearly as in that species; elytra 

 notably short, barely two and one-half times as long as the prothorax (cf ) 

 and less than three times as long (9 ), very narrow, sinuous and everted 

 distally as in eversa; abdomen wholly deep black above and beneath 

 throughout, the concavity of the last ventral (c?) much more extended 

 than in luteicornis or eversa, extending, decreasingly though deeply, to the 

 extreme base; female larger and stouter than the male, the black abdomen 

 becoming faintly refuscent at apex above and beneath. Length (cf 9 ) 

 9.5-11.5 mm.; width 2.4-3.2 mm. Unlabeled in the Levette collection. 



This species is widely distinct from luteicornis or any of the 

 preceding, though belonging to the same group; its habitat is 

 unfortunately not known, but perhaps may be Colorado, Indiana or 

 Florida in order of likelihood. The following is closely allied to 

 bicolor, of which it may possibly prove to be rather a geographic 

 subspecies than a distinct species: 



Ophistomis simulans n. sp. Coloration and sculpture, male sexual 

 characters and general habitus throughout almost exactly as in bicolor, 

 but it differs in its relatively broader and much less elongate elytra, the 

 outer apical angle of which is nuach less prolonged and less acute, also 

 in having the two sensitive areas of the outer male antennal joints vir- 

 tually contiguous, whereas in bicolor they are well separated throughout 

 on the somewhat more elongate outer joints. Length (cf 9) 10.3-11.3 

 mm.; width 2.3-2.5 mm. Colorado. Levette collection. 



Placed side by side, the two series of examples, six of bicolor and 

 four of simulans, can be observed to differ decidedly in form and size, 

 but that is all that can be said conclusively at present, except in 

 regard to the antennal characters mentioned. 



Subfamily LAMIIN.E. 



The transition from the preceding groups to such compact bulky 

 forms as many of the Lamiids, is too abrupt and it would be better 

 to have the Clytini form the pre-Lamiid group of the Cerambycinse. 



