302 Transactions. 
Wings.—Forewing black in life, fading to deep fuscous in the dried 
specimen ; scattered over wing, but especially on apical half, are numerous 
small rounded spots of a slightly paler colour, not at all prominently 
marked, and a more conspicuous pale-yellowish patch on posterior margin 
at end of Cu, and 1A. Cu, a stout vein, strongly marked in black. 
Hindwing dull fuscous, partially transparent, with darker venation. 
Text-Fic. 16.—Hydropsyche philpotti n. sp., ¢. Appendages ( x 45). 
Note the vertically upstanding gonapophyses and the remarkable 
penis. (10 per cent. KOH preparation.) 
Text-fig. 16 shows the very characteristic genital appendages of this 
species, in which the gonapophyses are held vertically upright, while the 
remarkably shaped penis projects outwards horizontally, carrying a strong 
terminal lobe from which projects a slender bifid spine. 
. Unknown. ` 
Types.—Holotype male and three paratype males, Dun Mountain, 
Nelson, 3,000 ft. (8th January, 1922, A. Philpott); all in Cawthron 
Institute collection. i Z 
Evidently allied to H. occulta (Hare), but easily distinguished by its 
black coloration and the form of its appendages. ' 
Family CALAMOCERATIDAE 
e characters on which the genus Philorheithrus finds its place i 
T 3 
the family Calamoceratidae are as follows: Maxillary palpi five-segmented E. 
ааа, К 
d 
