236 Records of the I vidian Museum. (Vol. Ill, 



of these occur along the anterior margin, some along the posterior 

 margin, particularly just before the tips of the anals, and a large 

 patch of them is found at the wing apex. The shape of the clas- 

 pers(Genitalfussen) is very characteristic, the ends being truncate, at 

 least as seen from above. The dark spots shown in pi. xv, fig. 8, 

 are chitinized points on the dorsum of the ninth segment that can 

 be distinguished only in specimens that have been cleared. 



This species corresponds closely to the description of 

 H. luctuosus, Ulmer. Some differences will be seen in the venation. 

 The species agree, however, in having R and Re of the fore wing 

 fused further towards the wing-margin in the male than in the 

 female. The two species are easily distinguished by the genitalia, 

 the processes on the dorsal surface of the tenth segment being very 

 slender in truncatus, and the ends of the claspers more or less 

 truncate. 



Several specimens from Kurseong {Annandale, May, 1906). 



Hydromanicus dilaius, sp. nov. 

 (PI. XV, figs. 9 — 12.) 



Expanse 19-20 mm. Head and thorax dark brown with 

 yellow hair. Antennae yellow, narrowly ringed with brown, basal 

 joint darker. Wings brown, with black and yellow hair, the yellow 

 spots being distributed rather uniformly. The venation is of the 

 type of Hydropsychc with no striking peculiarity except perhaps the 

 transverse position of the tip of R^ of the hind wing. The shape 

 of the genitalia is characteristic, particularly that of the claspers. 

 These have the first joint thickened distall)^, while the second joint 

 is very long and slender. 



One male and one female from Salatega, Java, sent by Dr. 

 Zehntner. 



The three species next to be described belong to that division of 

 the genus characterized above as being more distantl}^ related to 

 Hydropsychc. Their neares*" allies among described forms are doubt- 

 less H. aspcrsus, Ulmer, and H. papilionaceus, Hagen. With these 

 they agree in having cell ist R.^ of both wings long and narrow. 

 They differ, judging from Ulmer's figures of aspersus and of papi- 

 lionaceus^ in having a cross- vein between Sc and R, of the fore 

 wing. Cell R.^ of the hind wing is equal in length to its pedicel, 

 not decidedly less as in aspersus nor decidedly more as in papi- 

 lionaceus. The cross-vein between Cu, and Cu^ of the fore wing is 

 near the middle of the wing, a littlebefore the cross-vein M-Cu. In 

 the figure of aspersus it appears far towards the wing-margin and 

 in papilionaceus it is apposed to the cross-vein M-Cu. 



Hydromanicus marginatus , sp. nov. 



(PI. XV, fig. 13.) 



Expanse 20 mm. Head black with black hair, thorax black 

 above, golden towards the sides. Antennae yellow at base, ringed 



