AET. 25 INSECTS OF OEDEE TEICHOPTERA MARTYNOV 9 



HYDROPSYCHE COLUMNATA, new species 



Plate 2, Figures 22 to 24 



DescriiMon. — Head yellowish above, laterally brown; antennae 

 yellow with brownish annulations; palpi testaceous. Thorax dark 

 yellow. Legs dark yellowish with long brownish spurs. Anterior 

 wings testaceous, with paler irrorations, clothed with golden-rufous 

 hairs. Abdomen brownish, paler beneath. Male: Ninth tergite 

 with a broad triangular projection. Tenth segment subquadrate, 

 above, resembling someAvhat that in Hydropsyche penicillutcD, with 

 two analogous posterior processes, but these processes are here much 

 thicker, directed backward and somewhat clavate if seen from above. 

 Inferior appendages with long basal and short distal joints, basal 

 joint gradually thickening to its end. The end of penis produced 

 beneath into a large lower lobe or valve, which by a deep rounded 

 excision is subdivided into two lateral lobes; both these lobes are 

 narrow at their bases, dilated and capitate in their distal portions. 

 Above the base of the lower lobe are placed two dark rounded pro- 

 jections. Length of body, 6 mm. 



This is a distinct species, somewhat resembling Hydropsyche 

 appendicular^^ neAv species, and H. penidllaia^ new species, but 

 more evidently allied to Hydropsyche valvata Martynov, from south- 

 western Siberia. 



Type.— Male, U.S.N.M. No. 43166, from Shin Kai Si, Mount Omei, 

 Szechwan, July 1-17, 1922. ^ 



Specimens exa)mined. — One, the type. 



Genus HYDROMANICUS Brauer 



HYDROMANICUS INTERMEDIUS, new species 



Plate 2, Figures 25 to 27 



Description, — The specimen examined is somewhat defective; the 

 anterior wings were partly broken, and abdomen was separated. 

 Closely allied to Hydromanicus frater Ulmer and perhaps in lesser 

 degree to Hydatopsyche nielli Ulmer. 



Head and thorax dark brown above ; anterior portion of the head 

 (clypeus) clothed with very short whitish pubescence. Antennae 

 long, slender, j^ellowish, with dark spiral line in their basal portion ; 

 distal portion with brown annulations. Thorax brownish yellow at 

 sides; legs yellow, with long yellow spurs; fifth joint of tarsi with 

 two distinct claws. Anterior wings yellowish, with brownish reticula- 

 tion, forming indistinct transverse fasciae, partly anastomosing along 



66630—31- 



