ART. 25 INSECTS OF ORDER TRICHOPTERA MARTYNOV 11 



HTDROMANICUS species 



Specimen examined is without abdomen. 



Head and thorax brown, with yellow hairs above ; legs dark yel- 

 low, tibiae and tarsi somewhat darker. Anterior wings brown with 

 minute pale spots or dots, clothed with yellow hairs. Venation 

 similar to that in Hydroinanicus frater Ulmer, but Sc and K. are 

 united at their ends and the short common portion, Sc + R, reaches 

 the margin of wing near Rsi. 



Specimens examined. — One female, from Shin Kai Si, Szechwan, 

 July 1-17, 1922. 



Family CALAMOCERATIDAE 

 Genus ASOTOCERUS McLachlan 



ASOTOCERUS OCHRACEELLUS McLachlan 



Plate 2, Figures 28 to 31 



Asotocerus ocliraceeUus McLachlan, Trans. Ent. Soc. London, ser. 3, vol. 5, 

 p. 255, pi. 17, fig. 2, pi. 19, fig 2, 1866. 



Description. — Shape of wings and general coloration as in McLach- 

 lan's description ; posterior wings apparently somewhat darker, gray- 

 ish. Wing venation differs somewhat from that of McLachlan's 

 Plate 19, Figure 2, but McLachlan's figure is not quite precise. An- 

 terior wings long, narrow ; discoidal cell long, narrow ; median cell 

 equal to it in length. In posterior wings first apical fork arises 

 much basad of the second one; third apical fork long, with A'^ery 

 short pedicel. Male: Tenth segment roof -shaped, elongated, with 

 broadly excised or concave upper margin, if seen from the side; 

 apical margin truncate. Preanal appendages oval, hairy. Inferior 

 appendages very long and slender; their distal portions curved 

 arcuately inward and very slender; second joint coalesced with the 

 first and any boundary between them is not perceptible. Length of 

 body, 8 to 8.5 mm. ; expanse 28 to 32 mm. 



Remarks. — This form probably belongs to Asotocerus ochraceellus. 

 Dr. M. Mosely, of London, kindly compared one of the specimens 

 with the type in the British Museum and informed me that the wing 

 venation in our specimen is very similar to that in the specimen in 

 the British Museum; but one should not forget that the genital 

 appendages in this species are not described. A positive identifica- 

 tion needs careful comparison of these structures. 



Asotocerus ochraceellus is known from Borneo and Java. 



Specimens examined. — One male from Trong, Lower Siam, Janu- 

 ary-February, 1899; two males from Khow Sai, Dow (10,000 feet). 

 Trong, Lower Siam, January-February, 1899. 



