PHYSONYCHIS. 



31 



an obtuse angle, broadly truncated at tbe apex ; around this trun- 

 cation (which is much more prominent than in the females) is a row 

 of closely arranged spines, while the angle of truncation itself is 

 armed with an acute spur, and the whole surface clothed with thick 

 and very strong pubescence. The tarsus is short, and in both sexes 

 robust; the basal joint is broad and short, somewhat rounded ; the 

 second more minute, and triangular ; the third joint is somewhat 

 broader than the basal, broadly triangular, not bilobed ; the fourth 

 joint is elongate, slightly incurved, and gradually incrassated towards 

 the apex ; the apical claw being bifid, and armed at the inner surface 

 of each limb with a short, strong spur-like process. The posterior 

 femora are broad, dilated, and when viewed obliquely from beneath, 

 very much rounded above, and almost hollowed out at their lower 

 margin. The tibice are straight, abruptly bent at the immediate base 

 and gradually dilated towards the apex ; the terminal socket (at the 

 insertion of the tibise) is armed on either side with minute comb-like 

 teeth. The posterior tarsi are short, and less dilated than the anterior; 

 the first joint being triangular ; the second of similar form, but more 

 minute ; the third shorter, but broader than the first, almost circu- 

 lar, not bilobed ; and the apical joint attenuated (shorter than the 

 posterior), and terminating above the apical claw in a globular in- 

 flation. 



In Physonychis the sexual characteristics are the dilatation of the 

 antenna? in the males (the basal, and eighth to eleventh joints), and 

 the lateral projection at the apex of the anterior tibiae ; there is a 

 slight difference also between the sexes in coloration. 



1. Physonychis smaragdina. (Tab. I. fig. 8.) B.M. 



p, ( $ ) oblongo-ovata, parallela, sybcylindrica, crebre punctata, 

 viridi-amea aut ainea, glabra; capite brevi, inter oculos longi- 

 tudinaliter foveolato, ad basin variolato,flavo-ferrugineo, ad basin 

 fusco ; thorace lato, transverso, ad latera marginato, ad basin 

 transverse depresso, punctato, jiavo-ferrugineo ; elytris parallelis, 

 ad apicem rotundatis, crebre punctatis ; antennis robustis, ad 

 apicem dilatatis, art. 7 et 11 plus minus incurvatis, art. 1-5 

 flavis, 6-11 fuscis ; pedibus sat robustis, Jkivis, femorum postico- 

 rum apicibus fusco suffusis. 



S Long. corp. 3| lin., lat. If lin. 



$ Long. corp. 3^-4 lin., lat. 1^-2 lin. 



Oblong-ovate, parallel, subcylindrical, rounded at the apex, deeply 

 and thickly punctate, of a bright metallic-green colour. Head short, 

 transverse, depressed, hardly produced in front ; immediately above 

 the labrum is a broad deep and transversely depressed plane, ex- 



