102 T raH><aciionfi. 



Head about as broad as thorax, finely and distantly punctured, the 

 intervals minutely and densely sculptured, broadly bi-impressed between 

 the moderately prominent eyes. Antennae quite as long as the head and 

 thorax ; basal joint stout, obconical ; 2nd shorter than 3rd ; joints 4-10 sub- 

 serrate, each longer than broad; 11th elongate-oval. Thorax moderately 

 dilated laterally near the middle, about as long as broad, the spaces be- 

 tween the rather fine distant punctures densely and minutely sculptured ; 

 in some examples there is a slender stria along the middle, in all there is 

 a shallow impression near the base. Scutellum broad, medially grooved. 

 Elytra as broad as thorax at the base, wider behind the middle, rather 

 finely punctured, interstices slightly rugose and minutely sculptured. 



Of about the same size as the New Zealand D. oreocharis, 2036, of a 

 darker hue, difterently sculptured, and the thorax, without perceptible 

 lateral margins. 



Length, 5 mm.; breadth, 1^-2 mm. 



Pitt Island. 



Evidentlv the common species, thouuh probablv not tlie onlv one. Mr. 

 T. Hall. 



Group Otiorhyxchidae. 

 Thotmus gen. nov. 



Eostrum not as broad as the head and not distinctly marked oft' from 

 it, a third shorter than the thorax. Scrobes subapical, deep, broad, and 

 quite open above, abruptly bent downwards, narrowed, and not extending 

 more than half-way towards the eyes. Scape implanted near the apex 

 and just attaining the back of the eye, considerably yet gradually incrassate. 

 Funiculus 7-articulate ; its basal two joints almost equal, their leng-th only 

 about double the breadth ; joints 4-6 thick, each much narrowed at the 

 base ; 7th more transverse, distinctly separated from the club and preceding 

 joint. Club conical, indistinctly quadri-articulate. Eyes rather small, not 

 prominent, distant from the thorax, more so from each other, transversely 

 oval, subtruncate in front. Thorax without definite ocular lobes, base 

 truncate, rounded laterally, it is transversal. Scutellum large. Elytra 

 oblong-oval, the shoulders curvedly narrowed ; apices, conjointly, broadly 

 rounded. 



Femora stout, simple. Tibiae nearly straight, dilated at the extremity,, 

 posterior corbels thickly ciliate and cavernous. Tarsi with setose soles, 

 their basal two joints subtriangular, 3rd moderately expanded and bilobed. 



Prosternum deeply incurved in front. Metasternum moderate. Basal 

 ventral segment, in the middle, nearly twice the length of the 2nd, broadly 

 rounded between the coxae, the hind suture medially sinuate, 2nd less than 

 double the length of 3rd or 4th. Epipleurae linear throughout. Anterior 

 coxae contiguous, posterior widely distant. 



In Cecyro'pa the eyes are placed at or near to the thoracic margin, the 

 rostrum is very short, but the scape is elongate and reaches backwards 

 to beyond the apex of the thorax, the front coxae are distinctly separated, 

 and the anterior tibiae are furnished with a lobelike prolongation which 

 usually covers the basal tarsal joint, this lobe is lacking in Thotmus. 



The presence of supplementary mandibles shows without doubt that 

 this genus must be located in the Otiorhynchulac, along with Cecyropa, 

 which was placed by Pascoe in the nhijjMirosoDiiclae. 



