186 COI.KOl'TKHA. 



tliL' 4tli and r)th sliglitly longer than .{kI; I'lub Particulate, l)otli joints 

 oblong, the tenninal the larger. 



In L. iniitor, 2358, the olytral custae are cunsider.ihly more elevated 

 and tlie punctation deeper and eoai-ser. The sides of the head in front 

 of the eyes are distinctly margined. The antennal club is shorter and 

 broader, and the thoracic sculpture is different. 



Ijength, H mm. ; breadth, nearly |^ mm. 



Broken Kiver, Canterbury. 1 wo examples found by Mr. J. II. 

 Lewis amongst (k'ud leaves, 24th .March, 1908. 



3559. Lithostygnus cuneiceps sp. nov. 



Slender, elongate, nude, iiitid; ( liestiiut-red, antennae and tni-si 

 fiilvescent. 



Head oblong, gradually narrowed in front of the eyes, broadly bi- 

 sulcatf longitudinally, and with an obtuse ridge along the middle, the 

 carina which stai'ts from each eye, and is slightly curved near it, is 

 obliquely pi'olonged forwards. Kyes small and convex, with coarse 

 facets, situated on the upper part of the sides, and with an obtuse projec- 

 tion behind each. Thorax broader than long, widest before the middle, 

 Avell rounded there, gradually narrowed behind, posterior angles )'ect- 

 angular, its sides broadly explanate and finely crenulate ; disc very 

 uneven, having a subquadrate depression near the front with irregularly 

 carinate lateral margins, these form angles at their terminations, there 

 is anotlier depression near the base with an obtuse ridge behind it. 

 Elytra oblong-oval, nearly twice the length of the thorax, and in the 

 middle as broad as the widest ])art of the thorax, the shoulders are 

 oblique, and behind each there is a more or less obvious siM^ffosity, their 

 finely serrate lateral margins become invisible near the extremity; the 

 inner costae are slightly eurved near the apices but less so at the base, 

 the outer form the doi-sal margins behind but only begin between the 

 middle and hind thighs, tlie suture is not elevated, between it and the 

 inner eostae tliei'e are double series of coarse punctiform impressions 

 similar to tliose lu'tween the inner and outer eostae. 



Antennae glal)rous, 2nd joint globular, not as large as the basal, 

 joints 3-9 small and shnder, 4th and 8th slightly longer than broad, 

 the 3rd and 9th slinrter and globular; club not abruptly dilated, both 

 joints suboblong. 



T^nderside ol)scui'e fuseo-rufons. Head transversely trisulcate in 

 front. 



Rather nioi'e slender than A. rostatus, 1713, in which the thorax is 

 abruj^tly contracted behind, the tlytral costae ai-e more prominent, the 

 antennae diffei', the club is broader, and its l)asal joint is cup-shaped 

 or obconical. 



The insect is generally covered with greyisli sapjjy matter. "^Ihe de- 

 scription has been drawn up from a carefully cleaned specimen. The 

 sculpture of the head is best seen when examined sideways. 



Length, Hmm.; l)readth, | mm. 



Epsom. Nearly a dozen si^ecimens were secured from dead vegetable 

 matter amongst native trees and shrubs at the l)ase of Mount Eden 

 during tlie last three months of 1911. 



Ohn. — In the genus Mefop/if/ialmtis, described by Wollaston (" Insecta 

 Madeiensia," p. 192), the antennae are only 10 .\rticulate, the head is 

 laterally crenulate, and the eyes are so placed that the insect is in- 

 capable of seeing what may be beneath it. In Lithoxti/gmts the eves 



