864 COLEOPTERA. 



subseriate-puaetate, more irregularly at the base, substriate behind; fifth 

 nterstices with, on each, an elongate raised plica ending in a slight depression 

 before the middle, the remaining portion continued backwards but less 

 elevated and becoming obsolete near the extremity, there is another elongate 

 plica outside the first but farther from the base, the outer interstices are 

 slightly elevated and interrupted. 



Antennae longer than the head and thorax, stout, second joint smalt, 

 scarcely any longer than broad. 3-11 subequal, fourth not shorter than third. 



Underside coppery brown, with depressed, slender grey pubescence. 

 Basal ventral segment about as long as the following three united, subtrun- 

 catc between the coxae, fourth slightly incurved behind, in the middle 

 about half the length of third ; fifth paler, rather longer, somewhat Insinuate 

 at the apex, sixth as long, concave in the centre, broadly rounded behind but 

 not reaching the clytral apices. 



More elongate-oval than the type of the genus (1101), and at once dis- 

 tinguishable from it. as well as P. antiquus, by its projecting posterior angles 

 of the thorax, which are like those of the larger P. robustus (1103). 



Length, 5 mm. ; breadth, 1\ mm. 



Silverstream, near Wellington. One example, from Mr. A. C. O'Connor ; 

 31st October, 1916. 



Group Chrysomelidae. 

 Aphilon Sharp. Man. N.Z. Coleopt., p. 629. 

 ■4253. Aphilon sternalis sp. nov. 



Convex, subrotundate, glabrous, shining ; aeneo-niger ; legs, antennae, 

 and palpi testaceous. 



Head finely and distantly punctate, obliquely bi-impressed behind. 

 Thorax not tAvice as broad as long, widest at the somewhat rounded base, 

 its sides finely margined, gradually but hardly at all curvedly narrowed 

 towards the subacute front angles, apex finely margined and distinctly 

 incurved, posterior angles acutely rectangular ; disc distantly and lightl) r 

 punctured, apparently almost smooth near the sides and base. Scutellum 

 triangular, flat and smooth. Elytra just double the length of thorax, of 

 the same width as it is at the base : distinctly but irregularly seriate-punc- 

 tate, the inner row on each scarcely extending beyond the middle, all become 

 less distinct behind, almost obsolete in the female, interstices irregularly 

 and more finely punctured. 



Tibiae finely setose, slightly curved externally, a little expanded towards 

 the extremity ; basal joint of all the tarsi evidently enlarged, that of the 

 anterior subcordate, the others more oblong, the penultimate bilobed. 



Antennae as long as head and thorax, basal joint stout, rather longer 

 than the next, joints 3-6 elongate and slender, the others gradually thickened, 

 eleventh largest, oblong-oval. 



Underside aeneo-niger, with some short, slender greyish hairs, which arc 

 more numerous on the paler fifth segment. Mesosternum very short, 

 grooved across the middle, its front margin feebly angulate there. Meta- 

 sternum rather coarsely punctate ; sixth segment short and indefinite. 



The interocular impressions, smooth-lookino; thorax, and coarsely punc- 

 tured metasternum, taken together, are distinctive. 



$. Length, 3J mm. ; breadth, nearly 1\ mm. 



Titirangi, Auckland. Mr. A. E. Brookes found a pair on the 3rd June, 

 1916, and retains the female. 



