siwrni's. 265 



this general divergence of form, to separate it, I have determined to 

 register it, provisionally at least, as an Imatium. 



A single example of this species was taken by my friend Mr. Gray 

 and myself near Petropolis, Organ Mountains, in February 1857. 



Genus 40. SPARNUS*. 



Palpi maxillares breves, dilatati, art. 3''° subrotatidato, art. 4'" brevi, 

 compresso. 



Palpi labiales minuti, sabcylindrici. 



Antenna breves, incrassatce. 



Caput breve, depressum, Icevigatvm. 



Thorax late transversus, angulis anticis depressis, lateribus antice sub- 

 constrictis. 



Elytra depressa, lata, suborbiculata, punctata, impubescentia. 



Pedes sat robusti, femoribus posticis incrassatissimis, apicibus haud 

 elytrorum apicem attingentibus. 



Labrum short, subcircular, medially obsoletely sinuate. 



MaociUary palpi (Tab. IX. fig. 4 m) short, dilated at the apex ; the 

 first joint minute, hardly more elongate than the second, and broad ; 

 the third transverse, the breadth being greater than the length, in 

 form rotundate ; the terminal joint is short, broad, and compressed. 



Labial palpi (Tab. IX. fig. 4 n) minute, subcylindrical, robust. 



Antennae approximate, situated between the lower margins of the 

 eyes, short, robust, and in form incrassated ; the basal joint is elongate, 

 subincurved, and dilated towards the apex ; the second is short and 

 ovate ; the third of the same length as the first, attenuate ; the fourth 

 rather shorter than the third, and subdilated at the apex ; the 

 remaining joints are broadly incrassated and short. 



Eyes lateral, situated at the base of the head, large, and globose. 



Head short, considerably depressed, almost vertical, not produced 

 in front ; below the base of the antennae is a deep triangular de- 

 pression ; between the eyes is a distinct and acutely depressed T- 

 shaped fovea ; the surface of the head is levigate. 



Thorax broadly transverse ; the anterior angles are much depressed 

 and slightly rounded ; the sides are marginate, diverging slightly one 

 from another towards the elytra ; the basal line is in form arcuate ; 

 the surface is equate and subglobose, the sides being broadly and 

 distinctly depressed. 



Scwtellum triangular, punctate, levigate. 



* trirapvbs, infrequens. 



