6 PROCEEDINGS OF THE ISTATIOISTAL MUSEUM Vol. 78 



Museum, and I find that the head is authentic, although standing 

 in a suspiciously crooked position with reference to the thorax; 

 careful prying between the two reveals that the joint is normal. 

 The specimen is labeled " Brasilien. Coll. Winthem," and agrees 

 with the description, and I now accept it as the type. 



It is entirely distinct from the species identified by me as 

 rufiventris in Sarcophaga and Allies (1916, p. 150), although it 

 runs in my keys directly to that species. It differs from my species 

 in lacking the costal spine and apical scutellars; the front is wider, 

 less bulging, and with fewer f rontals ; the back of the head has much 

 longer and more abundant pale pile; and the third antennal joint is 

 elongated, more than three times the second (hardly more than 

 second in my species). 



Townsend has renamed my species as Rafaelia rufiventHs new 

 genus and species, in the Proceedings of the Biological Society of 

 Washington (vol. 30, 1917, p. 45). 



The genitalia of the true rufiventris are quite different from those 

 of the other species, but proved extremely difficult to extricate and 

 the penis was lost in the operation. The specimen was in poor 

 condition when received, but it is still possible to make a recognizable 

 description. It must be a rare species, as I have not seen another 

 specimen. 



Male (Wiedemann's type). — Front at narrowest (middle) 0.29 of 

 head width; in front view the head is decidedly wider than high. 

 Parafrontals and parafacials rather wide, with pale yellow pollen, 

 the parafacials with only a few small hairs near the orbit. Cheek 

 about two-fifths of eye height, with yellow pollen ; scars of five pairs 

 of frontals besides the large upper one, which must have contrasted 

 strongly in size with those next below it ; lowest frontals above mid- 

 dle of second antennal joint, not located nearer the orbit than the 

 others. Third antennal joint brownish yellow, long as stated; 

 arista with usual plumosity. Palpi black. 



Thorax black in ground color, with a conspicuous whitish stripe 

 above the notopleural suture. Apparently 3 posterior dorsocentrals ; 

 sternopleural 3; scutellum with 2 lateral, no apical; propleura bare. 



Abdomen rounded transversely (not flattened as in the misidenti- 

 fied species) ; basal segment blackish, remainder rather clear red 

 and with some whitish pollen; second segment without median mar- 

 ginals; third and fourth each with one pair, well separated from 

 lateral marginals. Genital segments reel. Genitalia shown in Fig- 

 ure 27. Forceps red, slender, parallel and well separated, turned 

 backward at base and slightly forward at tip ; accessory plate very 

 small ; posterior clasper wnth a very long hair on front side ; anterior 

 clasper long, tapering, thin. 



