Broun. — Revision of the New Zealand Cossonidae. 



215 



thorax, rather broader, of ahnost similar form, incurved at the base. Legs 

 moderately long and stout ; tibise gradually and slightly expanded, sub- 

 truncate at the extremity, with a slender mucro at the inner angle. Tarsi 

 moderately stout, the anterior rather short, with their 3rd joint slightly 

 bilobed, but not expanded ; the corresponding joint of the other pairs 

 concave but not lobed, the terminal as long as the basal 3 conjointly, with 

 distinct claws. 



Prosternum elongate, emarginate in front. Anterior coxa3 slightly sepa- 

 rated, placed near the hind margin of the prosternum ; the intermediate pair 

 distinctly, the posterior widely, separated. Metasternum short. Abdomen 

 elongate, basal 2 segments broadly impressed, 3rd and 4th moderately short. 



The disproportionally long and stout antennae, the complete absence of 

 the tibial hooks and scutellum, and its apparently blind condition, the eyes 

 being obsolete or altogether wanting, make its position unique. In the 

 genus Idus these important characteristics are almost precisely similar, 

 with the exception of the antennse, but it belongs to the Pentarthrides. 

 Both genera are concolorous, and are found amongst leaves on the ground. 



Hectaeus rubidus, Broun. Ann. Mag. Nat. Hist., August, 1904. (Plate XVI, 



fig. 10.) 



Nitid, ferruginous, antennfB and tarsi testaceous ; sparingly clothed with 

 suberect slender yellow seta?, the legs with more obscurely coloured ones. 



Rostrum a little uneven, with indefinite sculpture. Thorax not twice 

 as long as broad, its sides gently and regularly rounded, nearly flat, mode- 

 rately coarsely but not closely punctured. Elytra subdepressed, their sides 

 rather less rounded than the thorax, evidently striate-punctate, the jDunc- 

 tures subquadrate and distinctly separated, substriate behind, the suture 

 and interstices seriate-punctate. 



Metasternum and basal ventral segments distinctly but not closely 

 punctate. 



The female, from which the orignal description was drawn up, has^a 

 rather narrower and less apically dilated rostrum, with filmlike slender 

 squamse at its base. 



J . Length, 1^ lines ; breadth, nearly f line. 



Broken River, Canterbury. One of each sex. 



[The 



EXPLANATION OF PLATES XV AND XVI. 

 micro-photographs were prepared by Mi". A. Waterworth, of Northcote, Auckland.] 



Plate XV. 



Fig. L Pentarthrum zealandicum, Wollas- 



ton. 

 Fig. 2. Eiiophrynm rufum, Broun. 

 Fig. 3. Zenoteratus ■macrocephalus, Broun. 

 Fig. 4. Torostoma apicale, Broun. 

 Fig. 5. Toura longirostre, Wollaston. 

 Fig. 6. Sienoloura exilis, Broun. 

 Fig. 7. Merifima sharpiana, Wollaston. 

 Fig. 8. Dioedimorpha wollastoniana. Sharp. 

 Fig. 0. Rhinanisus fulvicornis, Broun. 

 Fig. 10. Macroscyialus laticollis, Broun. 

 Fig. 11. Proconiis asperirostris, Broun. 

 Fig. 12. Sericotrog us subcenescens, V^oWvinton. 

 Fig. 13. Gaurocryphus auricomus, Broun. 

 Fig. 14. Agrilochilus prolixus, Broun. 

 Fig. 15. Arecocryptus bellus, Broun. 

 Fig. 16. Eucossonus comptus, Broun. 



Plate XVI. 



Agastegnus longipes, Broun. 

 Mesoxeno pilosis brouni, Wollaston. 

 Microtribus huttoni, Wollaston. 

 Novitas dispar, Broun. 

 Stilbocara constricticolUs, Broun. 

 Arecophaga varia, Broun. 

 Pogonorhinus opacus, Broun. 



8. PrologoHum helmsianiim. Sharp. 



9. Allaorus urquharti, Broun. 

 Hectceus rubidus, Broun. 

 Exoinesiies optimus, Broun. 

 Eutornus litioralis, Broun. 

 Inosomus rufopiceus, Broun. 



Fig. 14. Pselactus pmictatus, Broun. 

 Fig. 15. Xenocnema spinipes, Wollaston. 



Fig- 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



Fig- 

 Fig. 10, 

 Fig. 11, 

 Fig. 12. 

 Fig. 13 



