ART. 23 GENUS CYLINDROMYIA MEIGEN ALDRICH 25 



The posterior forceps are smaller and a little less swollen than in 

 euchenor but of the same general pattern. The outer forceps are 

 also smaller and a little less robust. In both species the hind edge 

 of the forceps is grooved at the base. 



Length, 6.5 to 9 mm. 



Described from 2 males; 1 in the National Museum collection is 

 from San Jacinto, Mexico, Federal District, collected by E. G. 

 Smyth ; the other in C. W. Johnson's collection from San Dominica, 

 AVest Indies. 



Type.—UfilQ, Cat. No. 28285, U.S.N.M. 



Paratype in C. W. Johnson's collection. 



CYLINDROMYIA LIMBATA. new species 



(Figs. 6, 21) 



Male. — Parafacials and parafrontals slightly yellowish, the former 

 as wide as the third antennal joint, the latter narrow above; antennae 

 reddish-brown almost to arista. Mesonotum and scutellum with a 

 decided brassy and metallic reflection. Sternopleurals three. Ab- 

 domen rather brownish in color throughout, the second and third 

 segments only a little reddish on the sides ; the suture between them 

 narrowly and sharply bordered with white pollen ; the third segment 

 with the pollen much more extended; fourth segment with eight 

 bristles; fifth segment with one strong pair directed backwards. 

 The last genital segment mostly yellow, the genitalia greatly resem- 

 bling those of nana, the hind forceps minute, yellow, shining, 

 slender, about two-thirds as long as the anterior, which are also 

 yellow and shining, straight with broadly rounded tip. The margin 

 of the last genital segment is also shining yellow, and projects enough 

 to partially conceal the forceps. Fifth sternite with wide and 

 extremely shallow emargination along the center, at the sides, how- 

 ever, with the usual row of three bristles increasing in size on a 

 slight prominence. Wings brown along the veins and on the anterior 

 part. The discal and first posterior cells much lighter in the middle, 

 the brown color following the veins with quite uniform width. 

 Tibia rather dark red (the only species known with this character) ; 

 claws and pulvilli elongated. 



Female. — The specimen is teneral so that the dark border on the 

 wing veins is only suggested. The second principal segment of the 

 abdomen has on the median line below, just before the middle, a 

 slight swelling with numerous small and somewhat stubby spines, 

 much less distinct than in nana. The fifth segment is reddish, elon- 

 gated, conical, covered with rather dense retrorse hair. The last 

 segment consists almost entirely of the hooks, which are shining 

 black, the right one stout at the base, slightly notched in profile 



