Broun. — Revision of the New Zealand Cossonid?e. 189 



Agrilochilus prolixus, Broun. 928. Man. N.Z. Coleopt., p. 521. (Plate XV, 

 fig. U.) 



Obscure fusco-rufous, but when thoroughly cleaned and freed from sappy 

 matter appearing slightly nitid ; tarsi and antennae ferruginous ; the set;Te 

 greyish-yellow. 



Rostrum with indistinct punctuation, minutely asperate or rugose, finely 

 setose. The occiput very short and distinctly marked off from the sculp- 

 tured vertex, which extends behind the eyes. Scape dull, funiculus shining 

 and finely setose. Thorax with indefinite sculpture, apparently closely 

 punctate, the apex reddish. Elytra closely striate-punctate and asperate. 



J. Length, 1| lines : breaclth, J line. 



Parua and Waitakerei Range. Both sexes. 



Dioedimorpha, Broun. Man. N.Z. Coleopt., p. 805. 



Subdepressed, very elongate, sparsely and very minutely, cjuite indis- 

 tinctly, setose, and therefore appearing glabrous and moderately nitid. 



Rostrum nearly as long as thorax, strongly curvedly dilated at the 

 extremity, where it is quite as broad as the head ; it is again, but only 

 moderately, dilated behind the middle, at the point of antennal insertion. 

 Mandibles prominent. Head subconical, longer than broad, the occiput 

 short and evidently narrower than the sculptured part of the head. Scrobes 

 short and abruptly directed downwards. Eyes not prominent, remote from 

 thorax. Scape stout and gradually incrassate, inserted between the middle 

 and the base, extending back to beyond the eye. Funiculus 5-articu- 

 late, joints 2-5 of nearly equal length. Club ovate. Thorax rather longer 

 than broad, subconical, very slightly constricted in front. Scutellum dis- 

 tinct. Elytra twice as long as the thorax, and of almost the same width 

 throughout. Legs relatively short and stout ; penultimate tarsal joint 

 excavate in front, but not distinctly lobed. 



Underside moderately finely punctured, with some minute setae. The 

 coxfe more widely separated than in Agrilochilus. Metasternum very 

 elongate, medially sulcate. Basal 2 ventral segments elongate. Rostrum 

 with a distinct smooth median carina underneath. 



Female. — Rostrum longer and more slender, antennae inserted near the 

 base. 



This genus was instituted for the reception of Dr. Sharp's Pentarthrum 

 ivollastomanum and P. dehile. The remarkable head and rostrum are suffi- 

 cient for generic separation and identification. 



Dioedimorpha wollastoniana, Sharp. 917. Man. N.Z. Coleopt., p. 514. 

 (Plate XV, fig. 8.) 



Piceous, sometimes more rufescent, antennae and tarsi rufous, club paler. 



Head and rostrum moderately closely and finely punctured, the occiput 

 nearly smooth. Thorax a little wider behind the middle than it is else- 

 where, gradually narrowed anteriorly, its sculpture very similar to that 

 of the head, the middle of the apex smooth. Elytra finely striate-punctate, 

 interstices with fine serial punctures and appearing transverselv rugose. 



This species is common on Rhopaloslijlis (Areca) sapida, and the in- 

 dividuals exhibit a considerable amount of variation not only as regards 

 bulk, but also in the development of the head and rostrum. The typical 

 specimen is a fully developed male. 



3 . Length, 2| lines ; breadth, f line. 



Whangarei and Waitakerei Range. Both sexes. 



