10 Mr. D. Sharp's descriptions of eiglit neio species 



dorso piano ; elytris valde elongatis, subtiliter seriatim 

 punctatis, et transversim rugulosis. apice extreme brevis- 

 sime setigero. Long. exc. rost. 3^ — 4^ mm., lat. vix 

 1 mm. 



Mas., capite rostroque dilatatis. 



Fern., capite rostroque gracilibus. 



In this species the head and rostmm of the male are 

 very thick, and are rather closely and evenly punctured ; 

 the rostrum is dilated at the extremity, and only a little 

 longer than the head ; in the female the rostrum is rather 

 slender, and is twice as long as the head ; in each sex the 

 antennffi are inserted near the eyes, so that in the female 

 the portion of the rostrum in front of the point of insertion 

 is three or four times as long as the part between the in- 

 sertion and the eyes ; the 2nd joint of the funiculus is not 

 at all longer than the following ones ; the thorax is very 

 little contracted at the base ; the sculpture of the elytra is 

 pecidiar, consisting of fine series intermediate between 

 punctures and stria?, wdth distinct transverse rugas. The 

 development of the head and rostrum in the male sex 

 varies much, so that in some individuals it is not much 

 thicker than in the female. 



I have named this very remarkable species in honour of 

 the able author of the paper, "On the-Oenera of Cosso- 

 nidcB,''^ published by the Entomological Society of London 

 four years ago. A large colony of the species seems to 

 have been discovered recently by Mr. Thos. LaAvson at 

 Auckland. 



Pentarthrum dehile, n. sp. Elongatum, angustum, sub- 

 depressum, nitidum, ferrugineum ; oculis a collo remotis ; 

 prothorace minus elongato, antrorsum fortiter angustato, 

 ad marginem anteriorem leviter constricto, crebre, fortiter 

 punctato ; elytris sat fortiter punctato-striatis, apice brevis- 

 sime setigero. Long. 2\ mm. 



This little species in all its characters closely approaches 

 the Pentartliriun Wollastoninnum, but it is very much 

 smaller, and the sculpture of the thorax and elytra is 

 coarser, the latter being, however, nearly destitute of 

 transverse rugae ; the form of the head and rostrum is 

 similar in the two species, but in the male of P. dehile, 

 the incrassation of these parts does not attain such an 

 extreme point as it does in P. Wollastonianum. The 

 point of insertion of the antennte is not so near the eye 



