— ()10 — 



far from llio lip of /?i , ihe rlislance heyond r heiiig alinnl one-lialf longer 

 thaii tlie <l<'no<-li(.n of Z^ + r,: foll i.si M y l;up,o: l.asal (lelloctioii ol' Cin jusl 

 lieyond lli<' foik oï M; vcinsO/j, /.s7 1 unA ■>ihI I voiy stmngly lociirvHl 

 at Ihoir ends, the lasl named hfiing hoAÛ al a liglil angle. 



Abdomen dark brown, llie lasl sternile yellow; tergal valves of ibe ovl- 

 nositor very sbmder and strongly iipcnrved; sternal \alvcs yellow, ibe 

 bases black, ibe apices brown, llalleued, lapering gradnally lo ihe acute 

 tip: thèse lalter, on the ventral onter face, bave a proniinenl latéral toolh , 

 Ihe outer raargin beyond il being minutely serrulate. 



Habitat. — Los Islands, West Africa. 



Holotype : 9, Tamara, July igtS (J. Serand). 



Type in the Paris Muséum. 



Tbe référence of ibis cin-ious lillle fly to llie genns Dicraiiomiiia is pro- 

 visional only; ibe recession of r froni tbe lip of /?i and ibe simple claws 

 deviale slrongly from tbe normal characlers of ibe genus. 



Dicranomyia nairobii nov. sp. 



Belong to the tipnlipes group; thorax buffy, ihe prœsculum witb ihree 

 brown slripes: antenna^ dark brown ibroughoul; fore femora dark brown, 

 much darker iban tbe posleiior femora; wings grayish subhyaline; veia 

 Sri long; basai deflection of Cui underneatb cell ist Ma. 



Femnlc — Length, 6,2 mm.; wing, 7,8 nmi. 



Roslrum moderately elongated, exceeding balf tbe length of the rallier 

 long head, dark brown; palpi dark brown. Anteun<e dark brown ibrough- 

 oul. Head ilaik gray, the setigerous punclures more brownish; vertex 



narrow. 



Mesonotal prîpscutum lighl buffwilh ihree dark brown stripes. tbe mé- 

 dian stripe ending before the sulure: sculum and scutellum grayish lesta- 

 cens, pruinosemodially ; poslnolum dark, gray pruinose. Pleura dark. spar- 

 sely gray pruinose. Haltères yellowish, tbe knobs large, dark brown. Legs 

 wilb llie fore coxoe dark, the bind coxa^ paler brown; Irochanlers dnll 

 yellow; fore femora dark brown, witb only the base pale; bind femora 

 pale brownish yellow wilb only tbe lips darkened; libiiE and larsi dark 

 brown; claws witb a long basai loolb. Wings grayish subhyaline; stigma 

 lacking; cell .Se more yellowish; veins dark brown: a dark spot formed 

 by the brown Sc-i. Venation : .Se ending just beyond ihe origin of fl.9, Sc^ 

 far removed from tbe tip of .Sri, tbe lalter alone being longer than tbe 

 sector; Tin almost slraigbt; /• al tbe tip of fii ; basai deflection of fi/,+5 

 long, abont three-lourlbs the length of tho sector: r-m correspond ingly 

 sborlened: cell isl Mj narrow but sliorter tban tbe veins issuing from it; 

 basai delloction of Cu[ at about one-lhird ibe leuglh of cell ist M-i- 



