siwRxtrs. 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''" subrotundato, art. V" brevi, 

 compresso. 



Palpi labiales minuti, svheylindrid. 



Antennae breves, incrassatce. 



Caput breve, depressum, Icevigatwm. 



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

 constrietis. 



Elytra depressa, lata, suborbiculata, punctata, impubescentia. 



Pedes sat robitsti, femoribus posticis incrassatissimis, apicibus haud 

 clytrorum apicem attingentibus. 



Labrum short, subcircular, medially obsoletely sinuate. 



Maxillary 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 m) minute, subcylindrical, robust. 



Antenna? 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 antennas is a deep triangular de- 

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

 shaped fovea ; the siu-face 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. 



Scutellum triangular, punctate, levigate. 



* <T7r«pr6s, infrequens. 



