174 



HYDMOSYNT. 



one being larger and more prominent than the inner) below the in- 

 sertion of the tarsus. The tarsus is short and attenuate ; the two 

 basal joints being triangular and subequal ; the penultimate rounded 

 and minute ; the terminal joint dilated into a bladder-like inflation 

 above the apical claw, which is bifid, and has each limb armed with 

 an inner and smaller tooth. 



After much examination and comparison, I have felt that this form 

 ought to be separated generically from that which follows, to which it 

 has a manifest affinity. The head is distinctfy porrect, not depressed 

 at right angles ; the terminal joint of the posterior tarsus is not so 

 broad, or so manifestly bilobed ; and the longitudinal margination of 

 the postical tibia is unarmed (except immediately at the socket) by 

 any distinct spur. The facies also of the whole insect is different : it 

 is broader, flatter, not so cylindrical, and, instead of being pubescent, 

 is brightly glabrous. 



1. Hydmosyne inclyta. B.M. 



H. oblongo-ovata, snbparallela, punctata, viridi-amea ; capite brevi, 

 ad basin antennarum bituberculato, granulato, rufo-jUivo ; tho- 

 race transverso, ad basin late depresso, punctato, rufo-jiavo ; 

 ehjtris sat robustis, subtiliter striato-punctatis ; antennis fili- 

 formibus, fuscis ; pedibus jlavo-ferrugineis, fusco suffusis. 



Long. corp. 4^ lin., lat. 2 lin. 



Oblong-ovate, subparallel, punctate, impubescent, of a dark me- 

 tallic-green colour. Head short, transverse, not produced in front ; 

 above the labrum is a transverse triangular carination, and imme- 

 diately above the base of the antennae are two tubercles, more pro- 

 minently distinct by reason of a fovea which separates them : eyes 

 tolerably globose, situate at the base of the head ; the surface be- 

 tween the eyes is finely granulated ; the colour rufous. Thorax 

 somewhat broader than the head, transverse ; the anterior angles 

 subdepressed and distinct ; the sides marginate : at the base (when 

 viewed obliquely) is a transverse broad depression ; the surface is 

 finely punctate and glabrous ; in colour rufo-flavous. Seidell "m 

 triangular, impunctate, rufo-flavous. Elytra tolerably broad and 

 robust, somewhat broader than the thorax, with punctures (minute 

 and closely arranged) distributed in the form of striae ; these punc- 

 tures are obsolete as they approach the apex ; near the shoulders 

 (between the sixth and seventh striae) is a short but deep longi- 

 tudinal depression. Antenna? filiform, fuscous. Legs flavo-ferrugi- 

 neous, suffused with fuscous. 



South America. In the collection of the British Museum. 



