MB. R. M'LACIir>AN ON NKW-ZKAIjAND TRTCnOl'TEBA. 211 



in the middle, but no tooth ; the valves seem to be short and trun- 

 cated ( c? ? ) (Plate II. fig. 10b). 

 Auckland (Edwards) ; 1 c? , 1 $ . 



My two examples are botli in wretched condition. The spe- 

 cies is slightly smaller than P. mimicum, and very distinct both 

 in neuration and appendices ; in fact the genus appears to be 

 one in which the neuration of the S is the most given to as- 

 suming irregular and almost undescribable conditions. 



Catalogue of Trichopterous insects known to inhabit New Zealand. 

 (Marked thus * are in the British Museum ; thus t in my own collection.) 



Family SEEICOSTOMIDJE. 



G-enus (Econesus, M'LacJilan. 



(CEconessus, M'Lach. Trans. Ent. Soc, Lond. ser. 3, vol, i. p. 303 (18G2). 



1*. CE. Maoki, M'Lach. loc. cit, 

 Auckland [Colonel Bolton). 



On Plate II. fig. 1, I have given an outline of the some- 

 what extraordinary neuration of this insect. To the previously 

 published description should be added, that the radius in all the 

 wings is confluent with the first apical sector before the apex, as 

 in Calamoceras, Oanonema, Asotocerus, &c. ; the space between 

 the subcosta and radius in the fore wings forms a sort of long and 

 narrow pouch ; in the hind wings these two veins are united for 

 the greater part of their length into one thickened nervure. 



Genus Olini, M'Lachlan. 



2t. O. Feredayi, M'Lach. suprh, p. 198. 

 Christchurch, Canterbury {Fereday). 



Genus Ptonooentria, M'Lachlan. 



3*. P. FUNEREA, M'Lach. Trans. Ent. Soc. Lond. ser. 3, vol. v. p. 252 



(1866), pi. xviii. fig. 1, neuration and appendices. 

 Auckland (Colonel Bolton). 



4t. P. EVECTA, M'Lach. supra, p. 199. 

 Christchurch, Canterbury (Fereday). 



