OF NEW ZEALAND. 869 



Group-COSSONID JE . 



Pentarthrum (p. 508). 



1548. P. melanosternum, n.s. Fusiform, moderately con- 

 vex, slightly glossy, sparingly clothed with minute greyish hairs ; 

 castaneous, the apex of thorax and portions of the hind-body tinged 

 with piceous, legs paler, antennae rufous, club fulvescent, beak red. 



Prothorax ovate-triangular, constricted in front, its punctation 

 moderate. Scutellum blackish, shining. Elytra sub-cylindrical,-ar 

 little bi-arcuate at base, striate-punctate, interstices with a row of 

 small punctures. Legs stout, femora dilated medially and deeply 

 notched at the extremity, tibiae strongly uncinate, tarsi narrow, third 

 joint but little broader than the preceding one. Underside glossy, 

 moderately punctured, with excessively short greyish hairs proceed- 

 ing from the punctures ; prosternum and three last segments of the 

 abdomen reddish, the rest of the breast piceous ; lower surface of 

 the rostrum carinated, head smooth, the metasternum with longi- 

 tudinal linear impressions, basal segment of abdomen feebly im- 

 pressed. 



$ . Rostrum broad, parallel, its front part rather finely, the re- 

 mainder moderately coarsely punctated ; antennae inserted medially 

 (scarcely before the middle), stout, second joint of funiculus slightly 

 longer than third, club ovate, rather short. 



$ . Rostrum cylindric, shining, moderately finely punctured 

 almost in rows ; antennae implanted a little behind the middle. 



A form near P. zealandicum, smaller, relatively broader, rather 

 flatter ; the eyes of the male quite as prominent, the neck smooth ; 

 thorax shorter, more constricted in front, its punctation rather 

 coarser, causing it to appear less nitid. 



In the female the snout is shorter and broader than that of the 

 same sex of No. 903. 



Length (rost. incl.), i-| lines; breadth, f. 



Otago. Collected by Messrs. Fulton and Chalmer. 



1549. P. macrocephalum, n.s. Sub-cylindrical, convex, 

 shining, sparsely clothed with minute greyish hairs ; piceous, legs 

 and antennae red, club paler. 



Hostrum short, broad, parallel, broadly impressed on the middle, 

 its punctation neither close nor coarse. Antennas, implanted at the 

 middle, short and stout, bearing a few greyish hairs, second joint of 

 funiculus just perceptibly longer than third ; club short, of rather 

 rounded outline. Head large, quite as broad as apex of thorax, 

 without the least constriction ; the occiput, or neck, nearly free from 

 punctation. Eyes moderately prominent. Prothorax not much 

 longer than broad, considerably dilated near the base, from thence 

 much, yet not abruptly, narrowed towards the smooth apex, where 

 there is a slight constriction ; it is moderately punctured. Scutellum 

 small, transverse. Elytra cylindrical, base sub-truncate, almost 

 punctate-striate, quite striate behind, interstices with a row of small 

 punctures. Legs robust, front tibial hooks not elongate, third tarsal 

 joint a little expanded. 



