160 'J^'"^' 



of the body, the joiuts third to the eleventh emitting at their apices 

 a long, linear, and compressed branch quadruple the length of the 

 stem of the joint, except the branch of the eleventh, which is equalled 

 in length by the extremely long twelfth joint. 



Mr. Flohr informs me that the specimens were taken by Mr. 

 Becker at night, by spreading a white sheet on the ground and lighting 

 a fire, which attracts them ; they come out of the ground after the 

 manner of the Cebrios and Scaptoleni. Their habits are, no doubt, 

 similar to those of the Vesperi, which are subterranean in their early 

 stages. 



Vesperoctenus Floiiri, n. sj). 



Pallide fusco-testaceus, tenuiter puhescens elytris glabris ; $,capiteet 

 thorace dense fulvo-sericeo-lanvfjinosis, hoc medio j^a^iicMi'S eloncjatis ohsriin- 

 oi'ibus quatuor, elytris grosse coriaceis suhcostulatis. Long., 22 mm. 



Durango, Mexico {Becker^, communicated by Mr. Julius Flohr. 



Deltaspis disparilis. 



Subcylindrica, nigra; $ thorace (marg-i)iibus incrassatis anticis et pos- 

 tico nigris exceptis) elytris prosterno et abdouiine rubris, " abdoinine solum 

 rubro clytrorum epvpleuris rufescentibus. Long., 19 — 20 mm. 



Canelas, in Durango {Flohr). 



Of the numerous allied species this approaches nearest in mode of 

 punctuation to 7). nigripennis. The head is very coarsely and irregu- 

 larly, the thorax strongly but separately, punctured, with smooth 

 elevated spaces, and without trace of lateral tubercle. The elytra are 

 a little more finely, and much more densely, punctured, and clothed 

 with short tawny hairs, the apex of each bisinuate-truncated. The 

 thorax is more elongate, ovate-quadrate, than in the allied species. 



Deltaspis marginella. 



Minor, anguste eylindrica, opaca, thorace abdomine {inter dum corpore 

 subtus toto) vittaque epipleurali late rufis ; capite, elytris supra, antcnnis ct 

 pedibus 7iigris ; thorace subalveolato-punctafo lateribus medio plus minusve 

 angulatis. Long., 11 — 12 mm., $ ?. 



Canelas, in Durango {Flohr). 



As in D. alutacea, the thorax, though glabrous, has a peculiar 

 opaque surface, on which the punctuation is with some difficulty 

 determinable. It is very close, even on the nodular elevations. The 

 elytra are finely pubescent, and very densely but separately punctu- 

 lated ; the apex is obliquely and obtusely truncated ; the red vitta on 

 the epipleura is very broad at the shoulder, and gradually tapering 

 to beyond the middle, where it ceases. 



