1010 REPORT OF THE HARVARD AFRICAN EXPEDITION 
(Cameroon) which has the same peculiar mouthparts and leg-coloration, differ- 
ing In the large size and details of coloration and venation, especially the angu- 
late Rs, reduced basal section of R, +; and other characters. 
Limonia (Rhipidia) miosema Speiser 
1909. Limonia miosema Speiser; Sjéstedt’s Kilimandjaro-Meru Exped., Diptera, Orthorapha 
Nematocera, 50-51. 
The types were from moderate altitudes (1,300-1,900 meters) on Kili- 
manjaro, collected in September 1905 by Sjéstedt. In the present material, a 
pair from Lulenga, Belgian Congo, 1° 20’ 8., 29° 20’ E., altitude 5,500 feet, in lower 
mountain forest, March 29, 1927 (J. Bequaert). The rostral prolongation of the 
male hypopygium bears four spines, in this respect differing from the allied L. 
(R.) pallidipes (Alexander). 
Protorimarga, new genus 
_ General form of body elongate and attenuated as in Orimarga and Diotrepha, the meral region 
being greatly reduced, the sternopleurite and prothoracie region correspondingly lengthened. 
Rostrum short; maxillary palpi short, 4-segmented, the basal segment longest. Antennae 16-seg- 
Sc, Sc, Sc, Sc, 



Risa 


2 : 
Text Ficure 11. — Venational symbols: Cu = Cubitus; M = Media; 
R = Radius; Se = Subcosta 
(1) Venation of Protorimarga bequaertiana, gen. et sp. n. 
(2) Venation of Orimarga, sp. 
mented; first segment elongate, the flagellar segments passing through globular to long-oval. 
Legs long and slender, the segments with scattered semi-erect setae; claws elongate, in male with an 
acute subappressed tooth on outer face at near midlength. Wings (Fig. 11, 1, and Fig. 10, 3) broad, 
especially in the much developed anal field, widest just beyond the ending of vein 2nd A; costal 
margin of wing opposite the stigmal region considerably dilated, widening the cells in this region, 
this very possibly a sexual character. Venation: Sc long, Sc, ending beyond midlength of the 
long Rs, Sco at its tip; free tip of Sc. long and conspicuous; Rs long; R, strongly arcuated and 
recurved, R; , 2 being perpendicular; a supernumerary crossvein in cell R; between the free tip 
of Sco and R; «>. and shortly beyond the level of r-m; tip of R; bent strongly cephalad at about 
a right angle; a long spur or crossvein at the bend of the angulated Rs, connecting posteriorly 
with vein M or nearly so; medial field as in Orimarga; m-cu about opposite one-third the length 
of Rs; both anal veins very long, gently divergent. Male hypopygium (Fig. 10, 12) with the basi- 
styles elongate. Dististyles long, fused except at tips, the outer style terminating in a slender 
curved point, the inner style nearly as long, fleshy, setigerous. Gonapophyses appearing as heavily 
chitinized plates that are produced into short rods that are directed caudad. Aedeagus very short. 
Genotype. — Protorimarga bequaertiana, sp. n. (Ethiopian Region). 
The remarkable fly that is here made the type of a new genus of the subtribe 
Orimargaria presents some puzzling venational features. I believe the radial 
field has been correctly interpreted, as above, but there may be some dispute 
