52 Transactions. — Zoology. 



Genus Pachymorpha, Gray (1835). 



In the New Zealand species the number of joints in the 

 antenna is from 16 to 20. The first abdominal segment 

 is subquadrate, and the first joint of the anterior tarsi is 

 twice as long as the second. In P. hystricnlea the anal seg- 

 ment of the female (judging from the figure) is long and com- 

 pressed, completely hidmg the styles, as in P. sqzialida ; but 

 in the three species described by me it is expanded and 

 rounded at the end, while the styles are exposed. They thus 

 approach more nearly those species which Brunner has put 

 into his genus (or subgenus) Parapachyviorpha, but they do 

 not quite come within any of his sections. 



Artificial Key to the Species. 



Thorax vfith spines. 



Two spines on the middle of the mesothorax . . P. hystrictilea. 



No spines on the middle of the mesothorax . . P. annulata. 

 Thorax without spines. 



Two tubercles between the eyes . . . . . . P. salebrosa. 



No tubercles between the eyes . . . . . . P. acornuta. 



Pachymorpha hystriculea, Westwood (1859). 



The antennae are 16- jointed. The mesothorax has two 

 spines near its anterior extremity, two near the middle, and 

 two near the hind margin, and the hinder extremity is armed 

 with several smaller spines. The metathorax has a pair of 

 spines near its fore end, and its extremity is dilated and armed 

 with several divergent spines. The six basal segments of the 

 abdomen are armed with a spine on each side near the base, 

 the fourth segment being furnished with a dorsal and two 

 lateral foliaceous appendages. The terminal segments of the 

 abdomen are narrower than the others. The ovipositor is 

 emarginate at the tip, and does not reach to the apex of the 

 ninth segment. (Westwood.) 



This species is not represented in the Museum collection. 



Pachymorpha salebrosa, sp. nov. 



P. hystriculea, Hutton, Trans. N.Z. Inst., vol. xxx., p. 162, 



not of Westwood. 



Female. — Colour almost uniformly brown when dry. An- 

 tennae 20-jointed. Head with two black tubercles between 

 the eyes, united at their bases. Thorax and abdomen very 

 rough with short points, but no spines, except a row of short 

 ones on the meta-episterna, and a distant pair at the posterior 

 margins of the mesonotum, metanotum (proper), median seg- 

 ment, and the first five abdominal segments. The third and 

 fourth abdominal segments with dorsal and lateral foliaceous 

 appendages, those on the third smaller. First abdominal 

 segment rather longer than broad. Anal segment rather 



