544 COr-EOPTERA. 



Underside witli greyish and infuscate scales and setae, the dark ones 

 somewhat concentrated along the middle. Prosternum distinctly emar- 

 ginate in front. Anterior coxae narrowly but quite definitely separated. 



Of about the same size as C. sulcifrons (3860) but without the three 

 short frontal striae of the rostrum, the thorax is rather shorter, the elytra 

 longer, with less coiivex interstices. In some examples the vestiture is more 

 infuscate than that of the type, and in others forms inconstant dark marks 

 on the thorax and elytra. 



Var. C. tuberigera. — Basal ventral segment largest, rather flat, truncate 

 and a little depressed between the widely distant coxae, and with a pair 

 of minute tubercles at its posterior margin ; second as long as the following 

 cwo together, its frontal suture slightly curvate, it equals the fifth in length. 



Length (rostrum inclusive), 5 mm. ; breadth, nearly 2| mm. 



Takapuna, near Auckland ; 17th March, 1915. Mr. A. E. Brookes, of 

 Mount Albert. 



Tigones Broun. Man. N.Z. Coleopt., p. 855. {= Protophormus Sharp. 

 Man. N.Z. Coleopt., p. 1178.) 



4076. Tigones bicostellus sp. nov. 



Opaque, nigro-fuscous, antennae fusco-rufous, tarsi fuscous ; irregularly 

 covered with small, depressed, obscure dark-greyish and bright brassy 

 squamae, these latter most conspicuous near the eyes, and with many 

 decumbent yellow setae which are subseriate on the elytra. 



Rostrum fully half the length of thorax, its apical portion moderately 

 pterygiate ; irregularly punctate, obtusely elevated along the middle and 

 somewhat grooved near each side. Thorax without ocular lobes, base and 

 apex truncate, of equal length and breadth, very slightly broader near the 

 middle than elsewhere ; finely punctate, irregularly and coarsely rugose, 

 Scutellum subcordate. Elytra oblong, not quite vertical but considerably 

 narrowed behind, nearly thrice the length of thorax, not twice as broad as 

 it is at the base ; they are nearly plane along the middle, moderately 

 coarsely seriate-punctate, wdth minutely sculptured intervals ; third and 

 fifth interstices moderately elevated, hardly at all at the base, the fifth 

 terminate on top of the posterior declivity, the others lower down, none 

 are nodiform, apices simple. Tibiae minutely denticulate near inner 

 extremity. 



Scape implanted near the apex, scarcely reaching the front of thorax, 

 gradualh^ incrassate, finely punctate and squamose and, like the funicle, 

 bearing slender flavcscent setae ; basal and second joints of funiculus almost 

 equal, the others longer than broad, obconical ; club elongate-oval, densely 

 pubescent, triarticulate. 



Scrobes 0])en above, broad and shallow towards but not quite reaching 

 the eyes. Posterior corbels without any distinct external truncature. 

 Eyes longitudinally oval, somewhat oblique, less distant from the thorax 

 than from each other. 



This is very dissimilar to Sharp's three species of Protophormus. The 

 costiform elytral interstices, without nodiform elevations, simple apices, 

 and the minute brassy scales, which bojcome quite bright when brushed 

 with benzine, taken together, are good distinctive features. The specimen 

 apparently was taken from sludgy leaf-mould, others that may be found 

 under more favourable conditions will ])robably be brighter. 



Length (rostrum inclusive), 8 mm. ; breadth, 3 mm. 



Glenhope. Another of Mr. T. Hall's novelties ; 20th August, 1915. 



