14^ 



DICRANOMYIA. 61 



13 ( Hal teres unusually long. 13 halterata, u. sp. 



( Halteres of the ordinary length. 9 distans 0. S. 



'The cross-vein separating the discal cell from the first basal cell is 



arcuated in such a manner, that the inner end of the discal cell 



is but little more distant from the basis of the wing than the 



inner end of the submarginal cell. 10 stulta 0. S. 



The cross- vein separating the discal cell from the first basal cell is 



not conspicuously arcuated and hence, the inner end of the discal 



cell is distinctly more distant from the basis of the wing than the 



inner end of the submarginal cell. 15 



{ Thorax gray, with a brown stripe in the middle. 11 liberta 0. S. 



15 < Thorax brownish-yellow, with a brown stripe in the middle. 



( 12 haeretica, n. sp. 



.„| Wings immaculate. 17 



1 Wings spotted with brown. 18 



-- ( Stigma distinct. 1G pubipennis 0. S. 



\ No vestige of a stigma. 17 globithorax, n. sp. 



/ Wings brownish, three or four brown spots along the anterior margin. 



18 J 18 rara, n. sp. 



i. Wings with brown dots in all the cells. 19 defuncta 0. S. 



Description of the species. 



1. D. longipeiinis Schom. % and 9« — Ochracea, thorace rufescente, 

 vittis tribus obscurioribus ; pleuris vitta fusca ; alis angustis, immacu- 

 latis, areola discoidali aperta ; costa, venaque longitudinali prima pallide 

 fiavis ; vena auxiliaris pone initium prsefurcae perparuin extensa. 



Ochraceous, thorax reddish above, with three darker stripes, pleurae with 

 a brown stripe ; wings narrow, immaculate ; discal cell open ; the costa 

 and the first longitudinal veins pale yellow ; the auxiliary vein is ex- 

 tended very little beyond the origin of the prsefurca (Tab. I, fig. 1). 

 Long. corp. 0.25—0.3. 



Syn. Limnobia longipennis Schdm. Beit. etc. 104, 2. 



Dicranomyia immemor O. Sacken, Proc. Ac. Nat. Sc. Phil. 1861, p. 287. 



Head brownish, rather elongated, rostrum brown, also some- 

 what prolonged ; palpi and antennae brownish ; second joint of 

 the latter stout ; thorax reddish-yellow above, with three indis- 

 tinct brownish stripes, the intermediate one with a faint yellow 

 line in the middle. Pleurae with a brown line, bordered with 

 whitish, running from the humeri towards the basis of the 

 halteres ; the latter have a whitish stem and a brownish knob ; 

 abdomen brownish ; feet pale yellow, tip of the tibiae and tarsi 

 infuscated ; wings narrow, lanceolate, their basal, narrowed 

 portion rather long, their color is subhyaline ; anal angle small, 



