CHRYSOMELIDAE. 665 



Caccomolpus Sharp. Man. N.Z. Coleopt., p. 1308. 

 4254. Caccomolpus montanus sp. nov. 



Convex, broadly oval, glabrous, nitid ; black, palpi, antennae, and legs 

 castaneo -rufous. 



Head; and eyeg, nearly as broad as thoracic apex ; plane, finely and 

 slightly rugosely punctate on the middle. Thorax finely margined and 

 incurved in front, with slightly obtuse angles, its sides more distinctly 

 margined, gradually narrowed from the rectangular posterior angles to the 

 apex, its breadth more than twice the length ; its punctation irregular, 

 moderately fine, distinct on the disc, almost absent near the sides, closer 

 across the base. Scutellum subtriangular, smooth. Elytra of the same 

 width as thorax at the base, just thrice its length, well margined ; they 

 are distinctly, subseriately punctate, interstices irreguUirly, more finely and 

 distantly, the basal punctures near the sides are usually rather coarser, but 

 the sides arc almost smooth ; with the exception of a male, the rufescent 

 pygidium is quite exposed and bears some short grejnsh hairs. 



Antennae slightly longer than head and thorax, finely pubescent, mode- 

 rately slender, gradually dilated towards the extremity ; basal joint stout, 

 subpyriform. the next slightly longer than broad ; joints 3-5 longer, more 

 slender than following ones, the terminal elongate-oval, longer than tenth. 



Tibiae broadly grooved, the anterior curved externally, the others, 

 especially the intermediate, obtusely angulate below the middle, more slender 

 above than at the extremity, where they are finely sculptured and pubescent. 

 Basal joint of tarsi enlarged, elongate-cordate ; second small and transverse, 

 third rather longer, bilobed. 



Underside shining, aeneo-niger, distantly punctate, with some fine short 

 grevish hairs. Fifth ventral segment shorter than the basal but as long 

 as the preceding three together, subtruncate and finely margined behind ; 

 sixth short and broad, concave in the middle. Prosternal process margined, 

 truncate behind, its subacute angles extending laterally behind the coxae. 

 Mesosternum with its fine front margin slightly curved, with a transverse 

 groove between it and the thicker hind one. Epipleurae nearly smooth, 

 very broad but quite linear at the extremity. 



The sixth ventral segment and exposed pygidium are unusual characters. 



(J. Length, 5 mm. ; breadth, 3 mm. 



Mount St. Arnaud, Nelson. Four examples, two of each sex, found by 

 Mr. T. Hall on the 15th June. 1916. 



Marcus F. JIakks, Covfrnmen'^ I'linter, Wpllingti n — 1921, 



[400/8/21—13255 



