200 THE CANADIAN ENTOMOLOGIST 



its apex rounded, bearing a long slender appendage at its tip on the 

 inner side, this appendage long, slender and curved proximad so 

 that each touches its mate of the opposite side, these appendages 

 thickly clothed with long black hairs. The 9th sternite is very high 

 at its base, extending up beyond the ventral level of the 8th tergite, 

 its caudal ventral margin strongly chitinized, produced caudad and 

 dorsad into a long slender arm, just dorsad of which is a shorter, 

 strongly chitinized arm, with five or six blunt teeth on the ventral 

 face. The guards of the penis are separated except at the base, 

 divergent, chitinized, slender, rather blunt at the end, but the outer 

 angle produced distad into a long slender arm. (See pi. IV., fig. 12- 

 16). 



Female. — Similar to the male, with the following exceptions: 

 Antenna? short ; black on tips of femora even more extensive, in fore 

 femur covering almost one-half of the segment; tibiae almost uni- 

 formly brown. Abdomen, tergites 1 to 6 dark brown; segment 7 

 brown, apical third white; 8th tergite mostly whitish; sternum 

 lighter brown. 9th tergite, blade-like, pointed; 9th sternite short, 

 produced into a short lobe on its dorsocaudal angle; ovipositor 

 chestnut-brown. (See pi. IV.; fig. 11.) 



Vial No. 29, Tokyo, Japan; May 7, 1912. 1 d^, 5 9 . 

 Holotype. — Male, Tokyo, Japan; May 7, 1912. 

 Allotype. — Female, with the type. 

 Paratypes. — Four females, with the type. 

 Types in the author's collection. 



Paratypes in the U. S. National Museum and Cornell Univer- 

 sity collections. 



Family TipididcE 



Tribe Limnobini. 



Genus Dicranomyia Stephens. 



DICRANOMYIA JAPONICA, sp. n. 



Subcosta long; wings with a distinct stigma and faint clouds 

 along the cord; femora tipped with brown. 



Male. — Length, 9-9.4 mm; wing, 9.4-10 mm; antenna? 3.2 

 mm. Female: Length, 10.2-11.4 mm; wing, 9.3-10.6 mm. 



