604 PKOCEEDIXGS OF THE NATIONAL MUSEUM vol.86 



Female. — Sides of face and front parallel, only very slightly nar- 

 I'owed near the insertion of the antennae. Front and vertex elevated, 

 the elevations taking the form of two folds running from the occiput 

 to a point above the insertion of the antennae; the space between the 

 folds is furrowed troughlike, but not sulcate; the ocellar triangle 

 arises from this furrow. Vertex and occipital orbits divided by a 

 distinct but only moderately deep groove, occipital orbits broader 

 above than beloAv ; on an average, about three-fifths the width of the 

 front. Tenth antennal segment twice as long as the ninth. Thoracic 

 dorsum with a transverse patch of white pile, extending a short 

 distance along the suture, and anterior to it; this is continuous with 

 an area of similar hair on each pleuron; postalar calluses white- 

 haired. Scutellar spines wholly blue, about half as long as the 

 scutellum. Tarsi wholly black. Otherwise as in the male. 



Holotype. — Male, Bogota, Colombia (B. Guevara). U.S.N.M. No. 

 52763. 



Allotype. — Female, same data. 



Paratopotypes. — 3 males, 3 females, same data. 



Remurl'Si. — In spite of the differences in detail, I believe the males 

 and females described above to be conspecific. 



This species is close to that described by Gerstaecker as C. eyanea 

 Fabricius but may readily be distinguished b}' the fact that in cdti- 

 frons the vertex and front in the female are not so high, the former 

 not being bubl)lelike ("blasenformig"), and the basitarsi are black; 

 and the occiput in the male is yellow, with the orbits well developed. 

 The development of the male occipital orbits is a condition similar 

 to that found in C. androgyna Williston. 



CYPHOMYIA CYANEA (Fabricius) 



Three females, upper Putamayo River, Colombia (B. Guevara) ; 

 J male, Bogota, Colombia (B, Guevara). 



These female specimens agree with Lindner's redescription and 

 figure of C. cyanea^ but not with Gerstaecker's figure, which Lindner 

 considers an exaggeration. The ej'es are hairy, as Lindner shows 

 them. The male agrees with Fabricius's brief description, but it 

 does not have the prominent vertex mentioned by Gerstaecker. The 

 discovery of cdtifrons leads me to believe that Gerstaecker may have 

 had a similar species, which he misidentified for cyanea. 



CYPHOMYLA VARIPES Gerstaecker 



Two females, Higuito, San Mateo, Costa Rica (Pablo Schild). 



' Ann. Naturh. Mus. Wien, vol. 43, pp. 2G2-264, 1929. 



