of Lucanoid Coleoptera. 367 



mandibulis, capite prothoracisque lateribus, et corpore 

 subtus, griseo-pubescentibus. 



Long. Corp. unc. 1, lin. 3 ; mandib. lin. 3. 



Hab. — Venezuela. Coll. Parry. 



This species is most closely allied to S. armatus. The 

 externally tuberciilate mandibles, the coarser punctuation 

 of the head and thorax, the latter being considerably nar- 

 rower, with the absence of the nodules at its base, and the 

 more brassy tint of the insect under consideration, appears 

 to me amply to justify its separation ; moreover, the arma- 

 ture of the posterior tibiae is scarcely appreciable. 



Sphenognathus circumflexus^ S , Parry (var. max. ?). 

 (PI. IV. fig. 3.) ($ incognita.) 



S. obscure castaneo-ffineus, mandibulis fere semicircu- 

 lariter curvatis, supra deplanatis, profunde punctatis, 

 intus a basi fere ad apicem obtuse dentatis ; capite quadrato, 

 antice elevato, binodoso, modice punctato, ante oculos 

 angulato, postice fere glabro ; prothorace lato, in medio 

 convexo, crebre punctato, angulis posticis unidentatis; 

 elytris dense subtiliter punctatis vermiculatis, angulis 

 humeralibus obsolete tubercidatis ; tibiis anticis leviter 

 curvatis, fiisco-castaneis, intus etextus irregulariter spinosis, 

 intermediis flavis, extus 5 — 6 spinis acutis armatis (pos- 

 ticfe mutilatffi). 



Long. Corp. unc. 1, lin. 5 ; mandib. lin. 6. 



Hab. — Venezuela. Coll. Pany. 



An intermediate form between S. Feisthameli and the 

 following species, ^S*. caniculatus, perhaps more closely 

 allied to the former, from which it however differs in the 

 circumflex form of the mandibles, these organs being more 

 strongly punctate and depressed upon their upper surface, 

 with no trace of the external, suberect, basal tooth, always 

 to be met with in ^S*. Feisthameli; moreover, the left 

 mandible alone is furnished with a prominent internal 

 basal tooth ; further, the prothorax is wider, more convex 

 and more coarsely punctate, with the anterior angles more 

 rounded ; in other respects there is, however, a great 

 similarity; nevertheless, I am of opinion that the two 

 species may be considered as being distinct.^ Unfortu- 

 nately, in the present instance, the only specimen avail- 

 able for description is mutilated ; from traces to be met 

 with, this insect is evidently, in its normal condition, 

 pubescent. 



