OF NEW ZEALAND. 153 



largest, it as well as the second triangularly excised in front, fourth small, 

 fifth elongate ; middle tarsi dilated, first as long as the next two ; the 

 two hind pairs of tibiae are terminated by two spines, the inner stout, 

 and are finely spinose externally at the apex. 



Length, ij line; breadth, J. 



I found one male specimen at Tairua. Readily distinguishable by 

 the abruptly-enlarged seventh joint of the antennae, which, but for that 

 and the small eighth joint, would appear to be gradually thickened to the 

 extremity. 



Mesocolon. 



Nov. Gen.; allied to Colon and Choleva. 



Body oval, rather broad, arched ; head deflexed, greatly narrowed 

 behind, the portion not immersed trigonal ; apical joint of maxillary 

 palpi slender, very small, acuminate. Antenna as long as or longer than 

 the head and thorax, stout, except for the eighth joint, gradually thicken- 

 ed towards the extremity, so as to be indistinctly clavate ; the seventh 

 rather larger than the contiguous ones, the four basal joints elongate, first 

 stoutest, cylindrical ; joints five to ten obconical, eighth smaller than 

 seventh or ninth ; eleventh ovate ; seven to ten loosely articulated. 



Prothorax transversal, widest at the base, rounded anteriorly to the 

 width of the head, its base indistinctly bisinuated, with acute angles 

 reposing on the shoulders of the elytra. Scutellum triangular. Elytra 

 of the same width as the thorax at the base, obovate, depressed behind. 

 Legs long, robust ; hind femora of the male considerably inflated and 

 sub-dentate below ; middle tibia strongly arcuated, posterior slightly ; 

 anterior short, gradually dilated towards the apex, and their tarsi (male) 

 greatly dilated and pilose, first largest, and, like the second, triangularly 

 excised at the apex, third triangular, fourth small ; front tibiae terminated 

 inwardly by a stout spur, externally with another, the others bi-spinose 

 inwardly. 



These characters will suffice for the present, though not very dis- 

 tinctive ; the others will be found in a future volume of the Transactions 

 of the New Zealand Institute, after I have made a careful microscopical 

 examination of the insects belonging to this group. 



276. M. Clathrata, n.s. Oval, arched, rather dull, finely pubes- 

 cent, dark reddish-chestnut or smoky-brown, paler along the base of the 

 elytra, where they are reddish, as are also the legs and three basal joints 

 of the antennae, the median joints of the latter are infuscate, the 

 last testaceous. 



The head is finely sculptured, with a few punctures ; the thorax is 

 impressed with irregular longitudinal lines, having much shorter ones 

 proceeding from them obliquely, so that there are no distinct smooth 

 spaces. 



The prothorax is regularly rounded towards the front, and the elytra 

 gradually narrowed towards the apex, which in the male is truncate, so 

 as to expose the pygidium. The elytra have a distinct shallow stria at 



V 



