20 PEOCEEmNGS OF THE NATIONAL MUSEUM vol. 6!» 



I have before me 4 specimens from Juan Vinas, Costa Rica 

 (P. Schild). 



This species probably influenced Hendel to use the above generic 

 name for the group. 



PSEUDOGRIPHONEURA VARIATA Hendel 



Black, densely lead grey pruinescent. Antennae brownish yellow; 

 a dark mark on cheek below middle of eye; palpi brown. Thoracic 

 dorsum with two faint, narrow brown s'ubmedian vittae, and between 

 these and lateral margins a similar less distinct brownish vitta ; area 

 surrounding prothoracic spiracle rather conspicuously white dusted. 

 Abdomen colored as thorax, but the tergites with broad, testaceous 

 yellow hind margins. Legs white, coxae and femora, except extreme 

 apices of latter, black, fore tarsi sometimes dark on apical two or 

 three segments. Wings hyaline. Halteres yellow. 



Both pairs of fronto-orbital bristles strong, curved backward; 

 ocellars very small; arista plumose. Prescutellar arostichals 

 strong. Inner cross vein at middle of discal cell; last section of 

 fourth vein from 2 to 2.75 as long as preceding section; outer 

 cross vein at a little less than its own length from apex of fifth. 



Length, 4r-5 millimeters. 



Higuito, San Mateo, Costa Rica (P. Schild). 



This is the species described as Sapromyza varia by Coquillet. I 

 consider it is the same as P. cinerella Hendel. 



PSEUDOGRIPHONEURA PALLIPES, new species 



Female. — Differs from the above in having the frons darker grey, 

 face yellowish on sides and above, antennae paler; thorax whitish 

 grey in center and purplish gi'ey on lateral third on each side; 

 legs including coxae stramineous. 



Structurally similar to above, but the last section of fourth vein 

 is barely more than twice as long as preceding section in female. 



Length, 5.5 millimeters. 



Higuito, San Mateo, Costa Rica (P. Schild). 



Type.— Cat. No. 28453, U.S.N.IkL 



PSEUDOGRIPHONEURA HYALIPENNIS, new species 



Mole and female. — Similar to variata but darker in color, and with 

 the dark thoracic vittae absent or much less distinct than in that 

 species. The abdomen has no yellow apices to tergites, and the 

 pale parts of the legs in the male are more yellow than white. 



There are no noticeable structural distinctions externally. 



Length, 4.5-5 mm. 



Type. — Male, allotype and 5 paratypes. Higuito, San Mateo, Costa 

 Rica (P. Schild). Cat. No. 28454, U.S.N.M. 



