HuTTON. — On Neiu Zealand Steuopelmatidae. 237 



Length, 11mm. ; pronotum, 4mm. ; thorax, 7mm. ; ab- 

 domen, 5mm. ; fore tibia, 6mm. ; hind tibia, 11mm. ; hind 

 femur, 10mm. Width at the mesouotum, 4mm. 



Locality. — Welhngton, in old burrows of Hepialus virescens 

 (Hudson). 



Much more hairy than N. variegakis. Described from a 

 single male specimen. 



Genus Isoplectkon, gen. nov. 



Form small, rather robust. Head vertical. Antennee 

 rather slender, not very hairy, about three times the length 

 of the body, rather distant at their insertions; the first joint 

 broader than long ; the second nearly as long as the third ; 

 the others short, cylindrical. Fastigium low, slightly sulcate. 

 Eyes large, pyriform. Pronotum projecting slightly over the 

 occiput. Legs moderate, hairy, except the hind femora, which 

 are glabrous and much swollen. Fore coxge spined. Fore 

 and bind femora without apical spines ; middle femora with 

 a small inner apical spine. Fore and middle tibiae with an 

 inferior pair of apical spines ; those of the middle legs with a 

 single superior apical spine also, on the posterior side. Hind 

 tibiae with two pairs of apical spurs, subequal in length, the 

 largest considerably less than half the length of the first joint 

 of the tarsus. First and second joints of the hind tarsi ter- 

 minated above by two short spines ; the first joint about equal 

 to the other three together. Supra -anal plate transverse, 

 truncated at the apex. Cerci stout. Subgenital plate in 

 the male triangular, slightly keeled, the styles inserted on 

 each side of the base. Subgenital plate in the female short, 

 rounded, emarginate. Ovipositor large, deep, serrated near 

 the point on both edges. 



Isoplectron armatum, sp. nov. Plate XIII., figs. 18-186. 



Lobes of the pronotum horizontal, not margined. Legs 

 very hairy. Fore and middle femora unarmed below ; hind 

 femora much dilated; armed below with two strong curved 

 spines, and some smaller ones on the inner edge near the 

 middle. Fore and middle tibiae unarmed below and above. 

 Hind tibiae flattened above, with about fifteen spines in each 

 row, irregular in size. Supra-anal plate with a circular fovea 

 on each side, near the insertion of the cerci. Subgenital 

 plate of the male with short styles which do not quite reach 

 the apex of the plate. 



Colours. — Pale-tawny, finely marbled with purplish-fuscous, 

 and with two longitudinal lines of the same colour on the face ; 

 antennae tawny. 



Length, 12mm. ; pronotum, 4mm. ; thorax, 7mm. ; abdo- 



