June-Sept, 1919.] ALEXANDER: NEOTROPICAL CRANE-FLIES. 143 



darkened ; tarsi brown, darker apically. Wings broad, very pale brown ; a 

 broad pale brown band across the disk at the cord, the inner margin of this 

 pale fascia just proximad of the cord, the outer margin just outside the end 

 of cell 1st M 2 , the center of which is paler than the ends ; stigma elongate, 

 dark brown ; costal and subcostal veins yellowish, other veins dark brown. 

 Venation (Plate I, Fig. 14) : Sc long ending just before r; Rs long, straight; 

 R 2+3 rather short, a little longer than the basal deflection of Cu-i ; deflection of 

 i? 4+5 lacking, Rs in alignment with R i+5 ; cell 1st M 2 rather long and narrow, 

 the proximal end narrowed ; basal deflection of Cu t just before midlength of 

 cell 1st M 2 . 



Abdomen reddish-brown, the sternites brighter; hypopygium pale. Hypo- 

 pygium with the pleurites stout; dorsal pleural appendage short, the proximal 

 angle produced into a dark cylindrical arm that is sparsely clothed with long 

 coarse hairs at the tip and along the outer face; ventral pleural appendage 

 longer, strongly curved, the apex rather blunt and unarmed. 



Habitat : Panama. 



Holotype, J 1 , Porto Bello, April 19, 1912 (August Busck). 



Type in the collection of the U. S. National Museum. 



Gnophomyia lachrymosa new species. 



General coloration dark brown ; mesonotum with sparse yellowish mark- 

 ings ; halteres black throughout ; wings uniformly darkened. 



Male. — Length, 6.5 mm. ; wing, 6.4 mm. 



Rostrum and palpi dark brown. Antennae with the basal segments dark 

 brown, the flagellum broken. Head dark brown, the vertex greatly narrowed. 



Thorax discolored in the type ; praescutum dark brown with the lateral 

 margin and the humeral region paler; scutum with the posterior margin and 

 postnotum with the lateral margin pale. Pleura pale with a broad and rather 

 ill-defined dark brown dorsal stripe. Halteres short, blackish throughout. 

 Legs with the coxae and trochanters pale brown, remainder of the legs broken. 

 Wings narrow with a uniform slight dusky tinge ; stigma indistinct ; veins 

 dark brown. Venation (Plate I, Fig. 13) : Sc long, ending opposite the oblique 

 r ; Rs oblique, almost straight, in a line with R i+5 ; 7? 2+3 a little shorter than 

 Rs ; r at the fork of R 2 + 3 ; R 2 and R 3 long, parallel; deflection of i? 4+5 lacking; 

 basal deflection of Cu t at about one-fourth to one-fifth the length of the long 

 cell 1st M 2 . 



Abdomen dark brownish-black, the hypopygium a little more reddish. 

 Hypopygium with the pleurites rather short and stout ; dorsal pleural append- 

 age a long, compressed basal arm with the tip almost squarely truncated ; 

 ventral pleural appendage longer, slightly curved, broadest basally, the dorsal 

 portion tapering gradually to the acute blackened apex, the surface 

 sculptured; on the ventral face before the tip with a very acute slender 

 appressed spine. 



Habitat : Panama. 



