LIMNOPHILA. 229 



24. L<. cubitalis, n. sp. % and 9 • — Cinerea, fuscescens, tliorace 

 fusco-quadrivittato, pedibus testaceis, alis immaculatis, stigmate con- 

 colore, petiolo cellulse submarginalis primse brevissimo ; venula trans- 

 versa marginali ad apicem longitudinalis primse sita. 



Brownish-gray, thorax with four brown stripes, feet yellowish-tawny, wings 

 immaculate, stigma colorless, petiole of the first submarginal cell very 

 short ; marginal cross-vein near the tip of the first longitudinal vein. 

 Long. corp. 0.37—0.4. 



Head gray, with short black hairs on the front ; antennas 

 brownish, with short verticils; bent backwards, they would hardly 

 reach the root of the wings. Thorax gray, somewhat brownish 

 above, with four brown stripes ; pleura? of a lighter gray; halteres 

 yellow ; feet yellowish-tawny ; tip of the tibiaa and tarsi brownish ; 

 basis of the coxae grayish ; the feet are rather stout and clothed 

 with a somewhat conspicuous blackish pubescence. Abdomen 

 grayish-brown, male forceps brownish-tawny ; ovipositor ferru- 

 ginous. Wings immaculate, with a pale yellowish tinge ; veins 

 pale brownish, except the first longitudinal and the auxiliary 

 veins, which are yellowish : the stigma is hardly perceptible and 

 entirely colorless. The petiole of the first submarginal cell is 

 about the length of the small cross-vein ; the anterior branch of 

 the second longitudinal vein forms an almost right angle near its 

 origin ; the praefurca originates at an almost acute angle ; the 

 second submarginal cell is only slightly longer than the first 

 posterior cell ; the great cross-vein is near the inner end of the 

 discal cell. 



Hob. Virginia, Ohio ; a male and a female specimens. 



The forceps of the male, as far as can be judged from dry 

 specimens, resembles that of L. montana ; the venation also re- 

 minds of this species, especially the abrupt angle, formed by the 

 anterior branch of the second vein at its origin, the position of 

 the great cross-vein, etc. The ovipositor of the female is very 

 peculiar, if tliat of the only female in my possession can be con- 

 sidered as normal : the upper valves are of moderate length and 

 hardly arcuated at all ; each one is connected on the under side 

 with a membrane, w r hich seems to be the prolongation of the 

 valve. The dry specimen of course does not convey a correct 

 idea of this structure. L. cubitalis is certainly related to L, 

 montana, but I am uncertain whether it is to be considered as a 

 Dactylolabis. 



