NATHAN BANKS. 215 



Type. — Sienosmylus incisus McLach. Includes also St. 

 citrinus and St. stellae. 



AUSTROS3IYLUS n. gen 



Similar to Stenosmylns, but the median vein is forked as 

 stated in the generic synopsis, while the cubital branches 

 are simple ; ocelli present ; empodia forked ; costals very 

 numerous. 



Type. — Osmylus p2ilverule?iius Gerst. 



STENOSMYLUS MeLach. 

 Type. — Osmylus tenuis Walk. Includes also O. pallidus, 

 St. stenopterus and Nymphes extraneiis Walk. 



OSMYLUS. 



Dictyosmylus and Hyposniylus are based on the same char- 

 acter, the crossed costals ; but this is variable, and several 

 species described in Osmylus have one or two costals 

 crossed. Parosmylus was based on the presence of a spur 

 on coxa I, this spur is present in the types of Hyposmylus 

 and Dictyosmylus, also in Osmylus nubeculosiis (Paris Mu- 

 seum) which is apparently the saine as D. lunatus. More- 

 over this spur is present in the female of Osmylus maculatiis, 

 the type of Osmylus. O. punctipennis Walk, is a Hyposmylus, 

 and has the spur on coxa I. Therefore since the characters 

 used for these genera break down I consider they are 

 synonyms of Osmylus, at least until better characters are 

 presented. 



Sisyra bakori n. sp. — Head clear yellow, vertex with a dark cloud 

 on middle, three basal joints of antennae yellow, rest dark brown ; 

 thorax and abdomen brown ; legs clear yellow, unmarked ; wings nearly 

 uniform dark brown, darker on costal area and at tip. In fore-wings 

 eleven costal cross-veins, the last two widely separated, radial sector 

 with three branches, and connected back to the radius three times, a 

 cross- vein from base of second branch of radial sector to the first 

 branch of radial sector ; the apical forks of radial sector and its first 

 branch are of equal length ; the cubito-anal cell is hardly three times 

 as long as broad. In hind-wings the apical forks of the radial sector 

 and of its first and second branches are all of equal length. Expanse 

 8 mm. 



Type. — cf . From Los Banos, Philippine Islands (Baker). 



TRANS. AM. ENT. SOC. , XXXIX. 



