30 Annals Entomological Society of America [Vol. XII, 



Genus Styringomyia Loew. 

 Styringomyia didyma Grimsh. 



Specimens are in the collection from Honolulu taken in 

 May, 1914. It is apparently well distributed throughout parts 

 of Australasia. 



Genus Trimicra Osten Sacken. 

 Trimicra lateralis Grimsh. 



Specimens from Honolulu, April 10, 1914 (O. H. Swezey). 



Genus Gonomyia Meigen. 

 Gonomyia (Leiponeura) hawaiiensis, sp. n. 



Coloration dark brown; antennae dark brown, the first flagellar 

 segment light yellow; thoracic pleura striped with brown and white; 

 wings with a pale brown tinge, longitudinal veins long and slender. 



Female: Length, 3.2-3.4 mm.; wing 3.2-3.5 mm. 



Rostnmi and palpi dark brown. Antennas dark brown, the first 

 segment of the flagellum yellow. Head gray. 



Mesonotal prasscutum dark brown, the extreme lateral margin 

 pale; remainder of the thoracic notum dark brown. Pleura white, with 

 a dorsal dark brown longitudinal stripe; a ventral brown stripe occu- 

 pying the sternum. Legs with the coxae yellowish; trochanters and 

 femora brown, the apices of the latter and the tibiae a little darker; 

 tarsi brownish yellow. Halteres dark brown, the knobs conspicuously 

 light yellow. Wings pale brown, iridescent, the stigma indistinctly 

 darker brown; veins brown. Venation: Sc short, ending before the 

 origin of the sector; Rs long, gently arcuated; basal deflection of i?4+5 

 very short; longitudinal veins beyond the cord elongated; basal 

 deflection of Cui at or before the fork of M. 



Abdomen dark brown, the ovipositor with the dorsal valves very 

 long and slender, slightly up-curved, dark brown at the base, horn 

 yellow beyond. 



Holotype, 9 , Koolau Mountains, Oahu, altitude 1500 

 feet, February, 1917 (J. F. Illingworth). Found on a wet 

 bank. 



Paratypes, 9 's, Wailuke, Oahu, January, 1915 (O. H. 

 Swezey); Tantalus, Oahu, October 15, 1911 (O. H. Swezey); 

 Palolo, Oahu, February 8, 1914 (O. H. Swezey). 



The type of the subgenus Leiponeuri Skuse (Proc. Linn. Soc. 

 New South Wales, ser. 2, vol. 4, p. 795; 1889) is Gonomyia 

 gracilis (Skuse) ; the name is homonymous with Gonomyia 

 gracilis (Zett.) (1838) and is here renamed Gonomyia (Leiponeura) 

 skusei, nom. n. 



