1865.] 



115 



Myzine lateralis, n. sp. 



9 . Black ; two spots above base of antennae, spot beneath wings, postscutel- 

 lum, and a spot on each side of the four basal segments of abdomen, deeply 

 emarginate within, yellow; wings tinged with fuscous. 



Female. — Black, shining, sparsely clothed with whitish hairs ; head 

 deeply and closely punctured between the ocelli and antennas, feebly 

 and very sparsely so on the cheeks and behind the ocelli; just above 

 the insertion of each antenna, a yellowish spot; antennas black, the 

 basal joint clothed beneath with long pale hairs. Thorax shining; 

 prothorax sparsely punctured, deeper on the sides, finer and closer on 

 the disk, and on each side on the anterior margin an obscure dull fer- 

 ruginous spot, sometimes obsolete ; mesothorax very sparsely and feebly 

 punctured, with two deep approximate striae on each side opposite the 

 tegulas, and not reaching the anterior margin ; on each side behind the 

 outer stria a small yellowish or ferruginous spot, and on the disk be- 

 tween the two inner striae a large ferruginous mark, deeply notched in 

 front, and sometimes obsolete ; extreme sides of the prothorax finely 

 striated ; pleura deeply punctured, with a large yellow spot on the an- 

 terior margin beneath the wings ; scutellum with a few scattered punc- 

 tures ; postscutellum with a transverse yellow or ferruginous line ; 

 metathorax pruinose, on the verge of the truncation several transverse 

 acute slightly undulating carinas, and the sides finely, densely and 

 somewhat obliquely striated; tegulas piceous, edged with testaceous. 

 Wings subhyaline, tinged with fuscous, especially the apical half; ner- 

 vures testaceous. Legs shining, black, rather densely clothed with 

 pale glittering hairs; tarsi rufo-piceous. Abdomen black, polished, 

 very sparsely and feebly punctured; on each side of the apex of the 

 four basal segments a large yellow spot deeply emarginate within, so 

 that the yellow continues inwardly for a short distance along the apical 

 margin in a narrow line slightly thickened at tip, the spot on each side 

 of the basal segment is sublunular and not so deeply emarginate as those 

 on the second and third segments, that on the second is largest, and 

 that on the fourth segment smallest and sometimes reduced to a mere 

 line; apical segment depressed, densely and finely rugose, pitted with 

 deep punctures and clothed with brownish subdepressed hairs, the 

 apical and lateral margins are broad and reflexed; beneath piceous, 

 polished, the apical half of the segments deeply and closely punctured 

 and clothed with pale pubescence. Length 8 lines ; expanse of wings 

 12 lines. 



Collection. — Ent. Soc. Philad. Two specimens. 



