POGONIDAE. 367 



broader than long, widest near the middle, only moderately curved towards 

 the front, veiy gently sinuate towards the rectangular hind angles ; its 

 surface smooth except near the base, where it is distinctly and closely 

 punctured, fossae rathej- sliallf)w and not well limited, the dcjrsal groove 

 normal. Elytra oblong-oval, only slightly convex, more than double the 

 length of thorax, rather broader than it is at the base ; their striae only 

 moderately deep, finely and indistinctly punctate ; interstices slightly 

 convex, the 3rd feebly bipunctate, the common apical plicae present. 



This is intermediate between T. convexus and Shaip's T. debilis (1802). 

 which latter I have nf)t seen, but which apparently lias equally small eyes. 

 T. diversus has a less transversal thorax than T. convexus, it is much less 

 rounded before the middle, and, though somewhat narrowed, is hardly pei-- 

 ceptibly sinuate behind. The elytra are much flatter and very difierently 

 sculptured. 



Length, 6 nmi. ; breadth, iiearly 2| mm. 



Moa Basin, west of Mount Algidus, Canterbury. Unique. Another of 

 Mr. T. Hall's novelties, on the 20th October, 1913. In the same neighbour- 

 hood he secured a few specimens of T. puncticollis ; these are larger than 

 .Sharp's type, measuring 6 mm. by 2| mm. 



3811. Tarastethus halli sp. nov. ' 



Nitid, castaneo-piceous ; the base, lateral margins, and apices of elytra, 

 the coxae, and trochanters more or less chestnut-red ; palpi, anten}iae, and 

 tarsi somewhat fulvescent. 



This should be located near T. convexus, but the elytra are manifestly 

 different, being much less convex, quite oblong-oval, with less curvedly 

 narrowed shoulders ; their striae are nearly as deep towards the sides as 

 they are near the suture, but their punctation is a good deal fuier, and, 

 indeed, becomes quite indistinct behind ; the interstices are nearly plane, 

 the 3rd generally bipunctate, the 8th are pUcate, and near each side there 

 is a series of well-marked punctures. The thorax is nearly a third broader, 

 being nearly 2 mm. instead of 1|- mm., it is less narrowed anteriorly, the 

 basal punctation is rather coarser and closer ; the posterior angles are 

 somewhat reflexed and subacute in place of being flat, and the minute 

 setae on these, which are quite discernible in T. convexus, cannot be detected 

 in T. halli. The head is a little broader, with rather larger but not very 

 prominent eyes, and the impressions between these are broader but 

 impunctate ; the labrum is emarginate. 



The male has a single setigerous apical puncture at each side of the 

 last ventral segment, and the anterior tarsi are a little more dilated than 

 in the other sex, but are without visible squamae underneath. Flanks of 

 prosternum with moderately coarse shallow punctures, abdomen smooth. 



Length, 6-6| mm. ; breadth, quite 2|- mm. 



Mount Kiwi and Moa Basin, near Mount Algidus. Five specimens found 

 on the 20th October. J 914. This species is named in honour of its dis- 

 coverer, Mr. T. Hall. 



3812. Tarastethus fovealis sp. nov. 



Shining, nigro-piceous ; antennae, tarsi, and palpi fulve.scent ; femora 

 fusco-fulvous, the tibiae fuscous, but with obscurely rufescent apices ; 

 elytral margins and suture, the mandibles, and labrum piceo-rufous. 



