366 Major F. J. Sidney Parry's descriptions 



Sphenognathus nobilis, $ , Parry (var. max.). (PI. IV. 

 fig. 1.) (? incognita.) 



S. castaneus, viridi-metallicns tinctus, elongatus, sub- 

 convexus, subtiliter granulosus, mandibulis, capite, protho- 

 raceque brevioribus, porrectis, punctatis, apicibus incurvatis, 

 supra et intus in medio tuberculis nodosis irregulariter 

 instructis, dentoque basali et subapicali armatis; capite 

 quadrato, antice elevato, utrinque nodoso, ante oculos 

 angidato, articulis antennarum elongatis, clava modice 

 producta ; prothorace an gusto elongato, disco elevato, 

 lateribus subtiliter crenatis, angulis posticis reflexis, den- 

 ticulo parvo instructis ; elytris modice vermiculatis, angulis 

 humeralibus rotundatis, minute tuberculatis ; tibiis anticis 

 curvatis, fusco-castaneis, intus et extus irregidariter denti- 

 culatis, intermediis posticisque flavis, fere rectis, extus 

 minutissime dentatis, tarsis nigro-piceis ; mandibulis, 

 capite, protboracis lateribus, scutelloque regioni, et corpora 

 subtus, longa pubescentia fulva obsolete vestitis. 



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



Hab. — Venezuela. Coll. Parry. 



S. nohilis is at once distinguished from its congeners by 

 the narrow, elongate and subconvex form of its prothorax, 

 its glabrous appearance and brilliant irridescent coloration. 

 The strong subapical tooth of the mandibles is peculiar to 

 this species and appears to be constant in the three varieties 

 of development in my collection ; moreover, the antennse 

 exhibit a remarkable difference from the other species of 

 the genus, in their more slender scapus, and conspicuously 

 longer joints, those of the clava being much less produced, 

 while on the other hand the legs are considerably more 

 robust. 



Sphenognathus signatus, $ , Parry (var. minor). (PI. V. 

 fig. 2.) (2 incognita.) 



S. obscure brunneo-reneus, prothorace lateribus cupreo- 

 tinctis, mandibulis capite paulo longioribus, punctatis, 

 intus-obtuse dentatis, et extus prope basin tuberculo parvo 

 instructis ; capite fere ut in ^S*. armato ; prothorace elytris 

 angustiori, in medio subconvexo, leviter canaliculato, 

 grosse et irregulariter punctato, lateribus crenulatis, anguHs 

 posticis unidentatis; elytris apicem versus dilatatis, 

 convexis, dense subtiliter punctatis, vermiculatis ; pedibus 

 concoloribus, tibiis anticis intus et extus fortiter et irregu- 

 lariter armatis, intermediis 5 — 6, posticisque 2 — 3, dentatis ; 



