40 Prof. Charles P, Alexander on 



largely destroyed in iiinning. apparently pale with a sparse pruin- 

 osity. Halteres yellow. Legs with the coxae, trochanters, femora 

 and tibiae yellow, the tips of the latter narrowly darkened; meta- 

 tarsi brownish yellow, the tips and remainder of the tarsi dark 

 brown. Wmgs with, a yelloAvish tinge ; veins pale brownish yellow, 

 provided with conspicuous pale brown trichiae. Venation as in the 

 subgenus. 



Abdominal tergites dark brown, the sternites slightly paler. 

 Male hypopygium wdth the two apparent ventral ajipendagcs of a 

 length and shape unlike any other species loiown to the writer, 

 each appearing as an elongate, gently curved rod that is slightly 

 expanded into a blade-like portion at its distal end, the proximal 

 margin provided with a series of peg-like spines and long bristles, 

 the extreme tip produced into a j^owerful spine. The appendages 

 at the tips of the pleurites are powerful, deeply bifid at aj^ex, near 

 the base with a small appressed spine. Penis-guard an elongate, 

 straight, pale rod. 



Hab. Brazil. 



Holotype, ^, Ex the Winthem Collection. 



Type in the collection of the Vienna Museum. 



Cryptolabis sepulchralis, sp. n. 



General coloration brown ; wings with a strong brown suflusion ; 

 Rs elongate, between three and four times i?2 + 3 ; wing-surface, 

 except the base, provided- with abundant macrotrichiae. 



Male. — Length about 3"6 mm. ; wing 4*8 mm. 



Rostrum and palpi brown. Antennae with the scapal segments 

 dark brown ; flagellum brown, the segments with ' conspicuous 

 verticils. Front and anterior part of vertex yellow, the remainder 

 of the vertex dark brown; vertex between the eyes compressed 

 and elevated, this condition possibly due to drjdng. 



Pronotum yellow. Mesonotal praescutum dark liver-bro\\Ti with 

 a sj^arso pollen, the lateral margins narrowly yellowish ; remainder 

 of mesonotum dark brown. Pleura dark broAvn, sparsely pruinose, 

 Halteres dark brown, the extreme base of the stem yellowish. 

 Legs with the fore coxae brown, the other coxae obscure yellow; 

 trochanters testaceous ; femora and tibiae brown, the tips dark 

 brown; tarsi dark brown. Wings with a strong brown suffusion, 

 the stigmal region a little darker; veins slightly darker brown. 

 Venation : 8c long, 8c\ ending about opposite mid-length, or 

 beyond, of i?2 + 3 ; Sc2 not apparent ; Rs unusually long for a 

 member of this genus, between three and four times ii2 + 3 ; r 

 far from the tip of R\, on R2 about its owti length beyond the 



