OTIOUHYNCHIDAE. 329 



ITiulerside hlark. nitid, witli fine grey setae. Metasternum depressed 

 behind. Basal segment of abdomen longer than 2nd, broadly impressed, 

 medially incurved behind, 3rd and 4th with deep sutures, and, together, as 

 long as 2nd, 5th deeply notched behind. 



In appearance like /. siilcifer, 1618, yet really quite different in most 

 details ; agreeing better with the same sex of the densely clothed and larger 

 /. pejisus, 3600, which can be readily distinguished by its unicarinate and 

 broader I'ostrum, relatively broader thorax, much finer el^'tral punctures, 

 and thicker legs, but with similar structural characters. 



S. Length (rostrum inclusive), 10 mm. ; breadth, 3.| mm. 



Mount Hutt. Unique ; one of Mi'. T. Hall's discoveries on the 28th 

 December, 1912. 



Group Cylindrorhinidae. 



Mecosargon gen. no v. 



Body apterous. Rostrum moderately elongate and stout, considerably 

 dilated at apex, tricarinate above. Scrobes quite open above at the apex, 

 extending obliquely downwards more than half-way towards the eyes. 

 Scape inserted near the apex, moderately slender, scarcely attaining the eye. 

 Funiculus 7-articulate, rather longer than scape, basal two joints equal but 

 only moderately elongate, joints 3-7 distinctly longer than broad. Club 

 triarticulate, elongate-oval. Eyes strongly transverse, nearly flat, quite free 

 from thorax. Thorax of almost equal length and breadth, base and apex 

 subtruncate, widest near the front, with only feebly developed ocular lobes. 

 Scutellum very small. Elytra slightly wider than thorax at the base, nearly 

 four times its length, with vertical sides, posterior declivity not abrupt, 

 middle of dorsum plane. 



Legs moderately elongate ; tibiae a little dilated but only feebly mucro- 

 nate at the extremity, posterior corbels simple. Tarsi with dense sponge- 

 like vestiture underneath ; penultimate joint not expanded, deeply excavate 

 above, with short lobes, apparently entire below. 



Prosternum emarginate in front. Metasternum shorter than the basal 

 ventral segment. Abdomen elongate, 1st segment rounded between the 

 coxae, in the middle rather longer than 2nd and medially incurved behind, 

 3rd and 4th rather shorter, singly, than 2nd, both well developed, 5th bent 

 upwards and hardly visible. 



The unique exponent of this genus should be located between Anagotus, 

 2144, and Inophloeus iniius, 771, which latter in size and form it most 

 nearly resembles, but the more apically expanded rostrum, more oblique 

 and abbreviated scrobes, strongly transverse eyes, shorter scape, indefinite 

 ocular lobes, simple posterior corbels, and more elongated 3rd and 4th 

 ventral segments render it abundantly distinct. It differs greatly from 

 Anagotus in facies in its broader but less abruptly dilated rostrum, shorter 

 and less slender legs, less developed ocular lobes, different tarsal vestiture 

 and abdominal structure, &c. In the genus Phaeophauus the ocular lobes 

 are rather strongly developed, and the 3rd and 4th segments short. 



3759. Mecosargon costipennis sp. nov. 



Elongate, slightly convex, subopaque, very scantily clad with depressed, 

 sctiform, pallid scales ; nigrescent, antennae and tarsi rufo-piceous. 



Rostrum very little longer than thorax, in front half its width, coarsely 

 and rugosely punctate, much more finely and bearing yellow setae at the 

 apex ; external carinae thick, most elevated in front, somewhat convergent 



