HuTTON, — On Neiv Zealand StenopelmatidaB. 233 



metasternum with a small tubercle or ridge ; hind coxae as far 

 apart as the middle coxaB. Fore femora with one and middle 

 femora with two apical spines, hind femora without apical 

 spines. Fore and middle tibiae with two pairs of apical spines; 

 hind tibite with three pairs, of which the superior are acicular, 

 hairy, more than half the length of the first joint of the tarsi ; 

 the middle pair about half the length of the superior pair, the 

 inferior pair quite small ; spines on the upper surface irregular 

 in size, none beneath. First and second joints of hind tarsi 

 with an apical pair of small spines ; the first joint longer than 

 the other three together, and with some minute spines on its 

 upper surface. Supra-anal plate transverse, the apex trun- 

 cated, with a small point in the middle. Cerci rather short, 

 slender, depressed. Subgenital plate of the male longer than 

 broad, cuspidate, terminating in an acute point between the 

 styles ; that of the female short, the apex with three points. 

 Locality. — New Zealand only. 



Key to the Species. 

 a. Joints of antennae vasiform in the male. 



Fore and hind tibiae with two or three spines in 



the inner row .. .. .. .. P. simplex. 



Fore and hind tibiae with one spine in the inner row P. hudsoni. 

 aa. Joints of the antennae cylindrical. 



Mid tibiae unarmed above .. .. .. P . fcctinatxtvi . 



Mid tibiaa with three or four spines above . . P. divcrsiim. 



Pleioplectron simplex, sp. nov. Plate XIII., figs. 13-13e. 



Antennae about three and a half times the length of the 

 body, closely covered with hairs ; the joints in the male 

 vasiform, each narrowing towards its base ; the proximal 

 joints rather broader than long. Thoracic nota very slightly 

 bordered. Legs covered with short hairs, except the hind 

 femora. Fore and middle femora unarmed below ; hind 

 femora with two minute spines near the distal end. Fore 

 tibiae, below, with three spines in each row, none above. 

 Middle tibiae, below, with two or three spines in each row, 

 none above. Hind tibiae flattened above, with about twenty- 

 nine spines in the outer (anterior) and about seventeen in 

 the inner (posterior) row, irregular in size, some very small. 

 Subgenital plate in the male longer than broad, triangular 

 between the insertions of the styles, slightly keeled near the 

 apex. In the female the three apical points are nearly in the 

 same line. Ovipositor rather slender. 



Colours. — Fuscous, variegated with paler, a pale longi- 

 tudinal line on the pronotum ; antennae fuscous ; fore and 

 middle femora and all the tibiae transversely banded ; the 

 tarsi pale. 



Length, 16nim. ; pronotum, 4mm. ; thorax, 8mm. ; 

 abdomen, 10mm. ; ovipositor, 11mm. ; fore tibia, 7mm. ; 



