44 STREPSIPTERA 



one distal detached vein between the radius and medius, and two brief basal veins representing the 

 cubitus and first anal. Tarsi two-jointed. 

 Female unknown. 



Type of genus. — E. toalkeri, Curtis. 



Geographical distribution of species. — Parasites of leafhoppers, probably of the genus 

 Libumia (E. tenuicomis is known to be). 



i. E. melanias, Perkins, Fauna Hawaii. Vol. 3. Pt. 6 (Dec. 17, 1910). Oaliu. Hawaii. 



var.silvestris, Perkins, ibidem (1910). Oahvi, Hawaii. 



2. E. Umphtonii, Westwood, Trans. Ent. Soc. Lond. Vol. 1, pp. 173, 174, Mauritius. 



pi. 17. f. i5 (i835). — PI. 5, Fig. 4. 



E. tenuicomis, Pierce, Bull U. S. Nat. Mils. no. 66, pp. 166, 167. pi. 17, 

 f. 1 (1909 1. 



3. E. tenuicomis, Kirov. England. 



Stylops tenuicomis, Kirby, Trans. Linn. Soc. Lond. Vol. n, Pt. 2, pp. 233, 



23 4 i'iSi5). 

 E. tenuicomis, Saunders, Trans. Ent. Soc. Lond. p. 32 (1872); Pierce. 



Bull. U. S. Nat. Mus. no. 66, p 166 (19091. 



4. E. walkeri, Curtis. England, Ireland. 



Stylops walkeri, Curtis, Guide Arrang. Insects, p. 452 (1829). 

 E. walkeri. Curtis, Brit. lint. Vol. S, p. 385 (i83i); Pierce. Bull. U.S.Nat. 

 Mus. pp. i56, 157 (1909). 



3. Genus MECYNOCERA, Pierce 



Mecynocera. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 81 (1908); Bull. U. S. Nat. Mus. no. 66, 

 p. 168 (1909). 



Characters. — Male. - Head transverse. Eyes with comparatively few hairs, and ommatidia 

 close. Mandibles short, stout, acute; maxillae two-jointed, with a chitinous, knobbed filament from the 

 middle of the first joint. Antennas five-jointed, the first two joints cylindrical; first shorter than second; 

 third short, laterally produced in a very long sensitive flabellum; fourth and fifth elongate, the latter 

 surpassing the flabellum of the third by one-half its own length. Prothorax narrow, transverse; meso- 

 thorax longer; elytra long and slender and enlarged paddle-shape at apex. Metathorax with praoscutum 

 elongate goblet-shaped, convexly rounded in front, sides concave, converging to a peduncle, then 

 suddenly widened behind scuti as the base of a goblet, apically truncate; scuti elongate suboblong; 

 scutellum transverse, broadly truncate in front, posterior angles laterally produced, convexly rounded at 

 apex; postlumbium subcrescent shape, of different consistency from the remaining parts; postscutellum 

 broad, pubescent, convex. Wings with five primary veins, with a short detached vein between radius 

 and medius. Tarsi two jointed. CEdeagus cylindrical, slightly bent at middle, thence tapering to acute 

 apex, not reflexed near apex. 



Female. — Cephalothorax without sign of mandibles; opening of brood-canal very broad, deeply 

 cutting a rounded emargination into thorax, with a narrow curtain overhanging it at base. 



Type of genus. — M. koebelei, Pierce. 



Geographical distribution of species. — Parasites of leafhoppers of the genus Libumia. 

 1. M. koebelei. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 81 (190S). — PI. 3, Ohio. 

 Fig. 5; PI. 4, Figs. 4, 6, 15, 30, 39, 43. 



Elenchus tenuicomis, Perkins, Rep. Exp. Stat. Hawaiian Sugar Planters' 



Ass. Bull. 1, Pt. 3, pp. 106, 107, pi. 1, ff. 6, 8; pi. 2, ff. 3-6, II ; 



pi. 3, f. 4 (igo5). 

 M. hoebelei, Pierce. Bull. U. S. Nat. Mus. no. 66, pp. 168, 169; text fig. 3, 



nos. i5, 16; pi. i5, ff. 2-5 (1909I. 



