4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 72 



tinct ; first, third, and fifth veins hairy ; no acrostichals ; facial ridges 

 with fine hairs. 



Townsend had identified the species correctly from Panama and 

 Peru in the United States National Museum. I afterwards found a 

 specimen in the collection from Costa Eica. The type and our three 

 specimens are all females. 



81. PACHYGRAPHIA VIRGATA Wiedemann 



Dexia virgata Wiedemann, Auss. Zweifl., vol. 2, 1830, p. 382. 

 PachygrapMa virgata Beauer and Beegenstamm, Denk. Wien. Akad. Wiss., 



vol. 58, 1891, p. 406, vol. 60, 1893, p. 132.— Townsend, Ins. Ins. Menst., 



vol. 4, 1916, p. 8. 



Brauer and Bergenstamm in both references included Dexia vir- 

 yata Wiedemann and Dexia fervens Wiedemann under Pachy- 

 grapMa. Townsend designated the former as type of this genus. 



One female " Brasilien " labeled with genus and species but not 

 the word " type " ; an old specimen with no legs, very few bristles and 

 only one third antennal joint ; thorax in bad condition and abdomen 

 roughly glued on. It is possible to ascertain immediately that my 

 genus Gam'ptops ' is a synonym of PachygrapMa. The shape of the 

 head in virgata is exactly like that of unicolor, genotype of Camp- 

 tops. They agree in having one orbital bristle, the vibrissae above 

 the lower edge of the head, and so forth, but virgata has quite black 

 palpi as mentioned by Wiedemann. In unicolor there is a blackish 

 changeable spot in the pollen of the upper part of the parafacial 

 between the second antennal joint and the eye, which is entirely 

 absent in virgata. The plumosity of the arista is longer in virgata 

 and seems to continue to the extreme tip. The parafacial has a few 

 small hairs, not in rows, just about as in unicolor. The only dif- 

 ference I can make out in the chaetotaxy is that virgata has two 

 intraalars, of which the anterior is absent in unicolor. In both 

 there is no postscutellum, the third vein has six widely separated 

 setules reaching nearly to the cross vein ; bend of fourth vein rectan- 

 gular with short stump, last section of fifth vein shorter than hind 

 cross vein. In virgata the first posterior cell is narrowly open a 

 little before the tip. 



The species is not represented in the National Museum. 



82. ? PACHYGRAPHIA FERVENS Wiedemann 



Dexia fervens Wiedemann, Auss, Zweifl., vol. 2, 1880, p. 883. 

 Pachpgraphia fervens Beaitee and Beegenstamm, Denk, Wien. Akad. Wiss,, 

 vol. 58, 1891, p, 406 ; vol. 60, 1893, p. 132, 



One male, labeled " Brasilien," " fervens W. Coll. Winthem," and 

 " Pachygraphia fervens Wd." It does not bear the word type, but 



s Sarcophaga and Allies, 1916, p, 34. 



