Royal Physical Society. 209 



Sphenognathus, Buq. 



This genus, which was originally erected by Buquet (after 

 Dejean), Rev, Zool. 1838, possesses much interest, as being 

 one of the links which connect the New Holland Lamprimai 

 with the South American Chiasognathi and Pholidoti. 



The only species which have yet been described are Sphenog- 

 nathus Prionoides, Buq. ; Sph. albofuscus, Blanch ; and Sph. 

 Feisthamelii, Guer. The former, which was first described, 

 comes from Columbia, and approaches most nearly to the new 

 species which I am about to describe. 



This is already known in collections under the MS. name 

 of Sph. Lindenii ; that name having been bestowed upon it by 

 the Parisian entomologists, to some of whom I supplied it when 

 I first received it from Professor Jameson. This name I have 

 retained. 



1. Sph. Lindenii, Murr. (PI. X. ; male, fig. 1 ; female, fig. 2.) 

 Mas. — Statura Sph. Prionoides sed postice parum latior et 

 mandibulis longioribus. Castaneus, supra seneo-virescens, man- 

 dibulis elongatis, porrectis, deflexis et apice recurvatis, plus- 

 quam duplo longioribus capite ; oculis cantho divisis ; thorace 

 et capite longa pubescentia fulva vestitis, tibiis mediis et pos- 

 terioribus fere simplicibus. Long. 15 lin., lat. 7 lin. 



Femina. — Thorace transverso parce pubescente, angulis 

 posticis virescentibus, corpore subtus cinereo-fulva pubescen- 

 tia vestito. Mandibulis curtis, obtuse rotundatis, longitudine 

 capitis; tibiis posterioribus, fere simplicibus. Long. 17 lin., lat. 

 8 lin. 



Male. — Of the form of Sph. Prionoides, but broader behind, 

 and with the mandibles longer. Reddish chestnut brown; 

 thorax and head darker than elytra; in certain lights the 

 upper surface (except the mandibles) has a faint greenish 

 brassy reflection, which is most marked on the elytra; 

 head and thorax, and under side, clothed with a long ful- 

 vous pubescence, which disappears on the disk of the thorax. 

 Mandibles porrected, rather more than twice the length of 

 the head, bent downwards about one-third of their length 

 from the base, and slightly reflexed and incurved at the apex 



