210 Transactions. — Zoology. 



both sexes. The DolicJiopodincR have no auditory organ, 

 and, apparently, they emit no sounds. 



The value of this paper has been much enhanced by the 

 kindness of the Eev. W. Colenso, F.E.S., in sending me the 

 types of his species for examination ; but it by no means 

 pretends to be a complete monograph of our wetas. On the 

 contrary, several points of nomenclature are left in a very 

 unsatisfactory state, vphich can only be improved by a re- 

 examination of types. The paper will, however, be useful in 

 pointing out where our information is defective ; it will, 

 possibly, be the means of preventing a further growth of 

 synonyms ; and it will also enable field naturalists to name 

 with tolerable exactness the wetas they may have observed. 

 The cave- wetas are in the greatest confusion, and we do not 

 know whether there are six or only two species. I should be 

 very glad of any specimens that may be sent me. They may 

 be dried and placed between pieces of linen, or they may be 

 put into formolin or alcohol. They should not be pinned, as 

 that destroys the sternum. 



Sub-family ANOSTOSTOMIN^. 



Body nearly straight, broadest at the head or pronotum. 

 Antennae distant at their bases, the fastigium passing between 

 them. Clypeus divided into post-clypeus and ante-clypeus. 

 Pronotum transverse ; mesosternum and metasternum bi- 

 lobed. Abdomen longer than the thorax, very slightly com- 

 pressed. Ovipositor tapering. Hind tibiae with three pairs 

 of apical spines, one superior and two inferior. Tarsi with 

 pads on the lower surface, two on the first joint and one 

 each on the second and third joints. 



Some of the genera have a pair of large oval auditory 

 pits on the proximal half of the fore tibiae, one on each side, 

 while in others there are no auditory pits. Most, if not all, 

 have a sounding-organ on each side, near the lower margin of 

 the second abdominal tergum. True ocelli are absent in all 

 the New Zealand species known to me, but in a few there is 

 an indistinct ocelliform spot on the fastigium. 



SYNOPSIS OF THE GENERA. 

 Group Anostostom^ (with auditory pits on each side of the fore 



tibiae). 



Genus Deinacrida, 



Fastigium sulcata above. Presternum with two sharp spines. Fore 



femora with one, mid and hind femora with two, small apical spines. 



Mid tibire with two pairs of apical spines. Fourth joint of the hind tarsi 



longer than the other three together. 



Genus Hemideina, 

 Fastigium fovcolate above. Presternum unarmed. Fore femora 

 without apical spines ; mid femora with one apical spine, or none ; hind 



