-68 NEW ZEALAND NEUBOFTEBA. 



Wellington, and Nelson, and is probably generally dis- 

 tributed throughout New Zealand. 



The expansion of the wings is about -y^ inch. 



" Antennae blackish-fuscous ; head and thorax dark chestnut, clothed 

 with blackish hairs. Wings dark fuscous, the folds in the male conspicuously 

 darker ; a small whitish spot at the anal angles of the anterior pair. 

 Anterior legs greyish-ochreous, the intermediate and posterior femora and 

 tibise fuscous, the tarsi ochreous. Abdomen blackish-fuscous, the divisions 

 of the segments paler ; in the male the upper margin of the last segment is 

 produced in the middle into a long flattened lobe dilated at the base, then 

 attenuated and obtuse at the apex, from under it project the curved points 

 of the intermediate appendages ; inferior appendages consisting of two 

 branches, the upper obtuse and shorter than the lower ; ventral surface of 

 the antepenultimate segment of the female with a short obtuse lobe. Length, 

 of the body, 4 mm. ; expanse of the wings, 13 mm." (Hutton). 



The perfect insect appears from October till March, 

 and is easily recognised by its very dark colouring. It 

 usually frequents the margins of streams in rather open 

 country, and is often fairty common in such situations. 



PYCNOCENTEIA EYECTA. 



Pijcnocentria evecta, McLachlan, Journ. Linn. Soc, 

 vol. 10, p. 199, pi. % fig. 3 (1870). 



(Plate IX., fig. 5, fig. 6 larva in its case enlarged.) 



This little species seems to be fairly common and 

 generally distributed. It has been taken at Wellington. 

 Christchurch, Lake Pukaki, and Ophir. 



The expansion of the wings is about § inch. 



" Head with blackish and golden hairs. Prothorax with golden hairs; 

 meso- and meta-thorax nearly hairless, blackish-fuscous. Wings greyish, 

 the anterior with short golden hairs. Legs yellow, the tibiae and tarsi with 

 blackish hairs. Abdomen reddish-brown, the appendages yellow. In the 

 male the antepenultimate ventral segment bears a broad flattened obtuse 

 lobe, and from the last dorsal segment protrudes a small elongately 

 triangular sub-obtuse yellow lobe. Length of the body, 4 mm. ; expanse of 

 the wings, 16-17 mm." (Hutton). 



The larva is very abundant in many rivers and streams, 

 but appears to prefer those flowing through open country, 

 with a rather sluggish current and muddy bottom. It 

 constructs a small, cylindrical and slightly curved case of 

 secreted material, entirely covered with extremely minute 

 stones and particles of sand. This case is usually greyish- 

 green in colour, the greenish tinge being no doubt due to 

 the presence of a certain amount of living vegetable 

 matter amongst the sand grains attached to it. These 

 cases occur in the streams throughout the year. In the 



