OF NEW ZEALAND. 1267 



The contrast between the different colours is much more marked 

 than in A. phymatodes, and the insect is smaller ; it is not, however, 

 thejfemale of that species. 



Length, If lines ; breadth, quite ^ line. 



Waitakerei Range. One specimen. 



Arecopais. 



Nov. gen. 



Distinguished from Exilis as follows : Bostrum narrower, hardly 

 at all dilated near the antennal fossae. Eyes less transverse, of 

 rounded outline behind, but almost truncate in front, where there is 

 a narrow emargination. Antennal cavities nearly similar, extending 

 nearly to the front of the eyes. Antennce slender and elongate, as 

 in E. lawsoni ; their basal joint not cut away at the base, so as to be 

 less capable of free motion ; second joint longer, gradually thickened ; 

 the fourth joint not abbreviated. Thora.v about as long as broad ; 

 the carina not at all angulate in front of the scutellum, less sinuate, 

 more evidently prolonged forwards at the sides, being, in fact, thicker 

 there than at the base, the basal angles more obtuse. Legs much 

 longer. Prosternum not incurved in front ; anterior coxir more 

 globose, but separated to the same extent, in both genera rather 

 narrowly. The liead l)eing longer the parts of the buccal cavity are 

 correspondingly more elongate ; the mandibles, too, are more pro- 

 ininent and slender. 



The genus is instituted for No. 980, which now becomes Arecopais 

 spcctahilis. A. pliymatodes, and its allies, may be looked upon as a 

 nearly-related group, differentiated at once, however, by tlie pre- 

 sence of tubercles on the head. 



Proscoporhinus, 



JSIontronz. 



Head aiid rostrum very large ; the latter, in the male, as broad 

 as the thorax ; middle of apex subtruncate, beyond that oblique ; 

 its sides deeply and widely sinuate, with a deep narrow excision 

 behind limiting it from the short transverse head, which, owing 

 to the dense vestiture, cannot always be distinguished from 

 the rostrum when examined from the vertical front. Eyes 

 and front of thorax contiguous, when the head and rostrum are 

 deflected they are easily detected, but when the rostrum is nearly 

 on a level with the body they are invisible from above ; moderately 

 separated above, strongly transverse, about three times broader thaii 

 long, evidently emarginate in front. Antenmr slender, two or three 

 times longer than the body ; inserted in front of the eyes below the 

 angularly-dilated sides of the head ; basal joint with the exposed 

 portion much enlarged, second short, third elongate yet shorter than 

 fourth, joints 2-8 more or less expanded, or nodose, at the tip, 

 ninth longer than head and thorax, forming with the following two 



