igog.] C. Betten : Notes on the Trichoptera. 241 



and R. separate before the middle of cell ist R^, not beyond it as 

 in G. pilosa. In the hind wing cell R^ is decidedly shorter than 

 cell R*, not longer as in G. longi spina ; there is no cross-vein 

 R,^-R.^ as in G. conclusa. On the sixth ventral segment there is a 

 single blunt elongate tooth with no spines alongside of it as there 

 are in G. pilosa and G. japonica. This tooth is about one half as 

 long as the segment. The male palpi are difficult to make out 

 satisfactorily. The basal joint is short, one-and-a-half times as 

 long as wide ; the second is apparently wider than long ; the third 

 is about as long as the first and second. It is densely covered 

 with very small club-shaped striate scale hairs. 



vSubfam. LEPIDOSTOMATINM. 



Gen. GoERODES. 



Go erodes sp. 



(PI. xviii, figs. 6 — 9.) 



The three specimens belonging to this species are all females 

 hardly admitting of specific determination. Ulmer's description 

 of G. cornigera and his notes on G. vuli>ina, Hag., and G. ursina, 

 Hag., seem to exclude these as possible determinations for this 

 species. The figures and notes here added may make later deter- 

 mination of this material possible. 



Length to tip of wings 7 mm. Expanse 13 mm. First joint 

 of antennae covered with long ye'low and fewer black hairs, succeed- 

 ing joints darker at their distal ends. Legs yellow with dark hair, 

 particularly externally. Spurs 2-4-4, subapical spurs of inter- 

 mediate tibiae three-eighths the way from the proximal end, those 

 of the hind tibiae th'eefourths the way; hind tibiae somewhat 

 curved in the region of the subapical spurs. Wings light brownish 

 with short yellow and longer black hair. The venation differs from 

 that of G. vulpina figured by Ulmer {Cat. Coll. Selys., fasc. 6, 

 p. 40, fig. 64) mainly in that cell Cu,a does not extend as far 

 back as cell ist R , and that Cu is not arched strongly near its 

 branching ; in the hind wing Sc and R are fused beyond the apex 

 of cell R^, there is no cross- vein R;i-R4, cell M. does not extend 

 further back than cell R . 



Three specimens from Upper Assam. 



Gen. DlNARTHRELLA. 



Dinarthrella sp. 



(PI. xviii, figs. 10 — 12.) 



There are two specimens ( cf and 9 ) of Dinaythrella doubtless 

 representing a new species but in such very bad condition that I 

 do not propose a specific name and content myself with giving 

 figures of venation, the first joint of the antennae, and the genitalia 



