PHYSONYCHIS. 



29 



the fifth to eighth black, the ninth to eleventh flavo-testaceous. Legs 

 tolerably robust ; the posterior femora subelongate, robust, parallel, 

 with an oblique fovea on the outer side near the apex ; the posterior 

 tibiae robust, incurved, produced considerably beyond the insertion of 

 the tarsi ; colour fulvous throughout. 



This species closely resembles in its general form that of the genus 

 Lema, and in this respect differs from the preceding species. By the 

 characters of its mouth (combined with the form of the elytra and 

 of the posterior tibiae) it proves itself clearly to be separated gene- 

 rically from other neighbouring species. 



From the Amazon River. In the collection of Mr. Bates. 



Genus 4. PHYSONYCHIS*. 



Dej. Cat. (1837) p. 408. 

 Ovatus, subparallelus, impubescens. 

 Labrum subcirculare. 

 Palpi maxillares elongati, art. 3° subcylindrico (ad apicem leviter 



dilatato), ultimo abbreviato. 

 Palpi labiales minuti, haud elongati. 

 Antennae robustce, subincrassata;, art. 1, 2, 8 et 11 compressis et dila- 



tatis (in 2 simplicibus). 

 Caput haud productum, depressum, breve. 

 Thokax latus, transversus, ad latera marginatus. 

 Elytra parallela, subdepressa, ad apicem, rotundata. 

 Pedes robusti, tibiarum apicibus in J dilatatis. 



Labrum subcircular, more subcircular and relatively smaller than 

 in the preceding genus, Euphenges. 



Mandibles robust; at their inner edge is a slight tooth-like projec- 

 tion ; concealed. 



Maxillary palpi (Tab. I. fig. 8m) elongate, geniculated probably at 

 the apex of the second joint ; the basal joint obsolete ; the second 

 parallel, subdilated and truncate at its apex, which receives the in- 

 sertion of the third joint ; the third joint is longer, subcylindrical, 

 slightly dilated towards the apex, broader than the second (its length 

 being nearly double its breadth) ; the apical joint is abbreviated, 

 conical, at the base equal in diameter to the apex of the third joint. 



Labial palpi minute, not elongated ; the apex of the terminal joint 

 rounded. 



Antenna? (Tab. I.fig.8«) robust, filiform, pubescent, subincrassated ; 



* fvadoj, inflo ; ovvt, unguis. 



