258 CHARLES W. JOHNSON. 



0<loiitoiii.via nijjerriiiia Loew. 



Oduiitoinyia nujerriiiut Loew, Ceiitur. x, 6; Day, Proc. Acad. Nat. Sci. Pliila 



1882, 82. 



The following is Loew's description of the female : 

 Long. eorp. 4 liii. ; long;, al. 3i lin. — Black, shining, bare, short whitish puhes- 

 cence. Head concolorous, longitudinal fossa of the front and both margins testa- 

 ceous. Face extraordinarily prominent, protuberant, obtuse ; lateral margins of 

 the mouth strongly dilated ; proboscis black, stock slender ; head long and very 

 thick. Antennse slender, black ; first joint once and a half as long as the second ; 

 scutellum wholly black, teeth fusco-testaceous ; posterior margins of the second 

 abdominal segment; third and fourth towards the side of the abdomen of a lu- 

 tescent color, thus three narrow bands are seen broadly interrupted ; the posterior 

 margin of the fifth segment wholly lutescent ; venter black, with a broad unequal 

 disc, darkly lutescent; this abdominal picture in living specimens I suspect to be 

 wholly green. Legs black, apex of the femora, base and apex of the tibige and 

 first and last joints of the tarsi, except the apex, " fusco- luteo-testaceous." Wings 

 hyaline, veins strongly brownish black; costal and third longitudinal subfuscous 

 towards the apex, third longitudinal vein with erect branch, discoidal cell emits 

 two veins 



Middle States (Loew). 



A male from Buffalo, X. Y. (PI. iv, fig. 25), in the collection of 

 the Kansas University I doubtfully refer to this species, it agrees 

 with the type, except that the third longitudinal vein is simple. 



Length % S mm. — Face black; shining with long whitish pile; facial protu- 

 berance very prominent, obtuse ; vertical triangle black. Thorax black, with 

 prominent blackish pile ; scutellum black, spines yellow. Abdomen black ; second, 

 third and fourth segments with small, subtriangular yellow spots at the posterior 

 angles; fifth with prominent lateral and posterior margins; venter greenish yel- 

 low. Femora black; tijis of the femora, the tibise and tarsi, yellowish; medial 

 portion of the tibife and the last two joints of the tarsi brown. Wings hyaline, 

 veins dark brown ; discal cell emits two veins, third longitudinal vein simple. 



Odontoinyia pilosus Day (PI. iv, figs. 13, 14). 



OdotitoiinfM pilumis Day. Proc. Acad. Nat. Sci. Phila. 1882, 76. 

 Odontomyia pyrrhostoma Bigot, Ann. Soc. Ent. France, 1887, 25. 

 Length 'J, 9 H u'ui- 'S-— Face and vertical triangle black; face with long, 

 dense, whitish pile ; oral margin and ocelli yellowish. Antennae black. Thorax 

 and pleurae black, with long yellowish pile; scutellum black, apical margin be- 

 tween the spines and the spines yellow. Abdomen black, shining, with long 

 yellowish pile; second and tliird segments with a subtri.angular yellow marking 

 on the lateral posterior margin ; in some specimens these are contracted at the 

 angle, so that they reach the lateral edge only by a narrow line ; markings on the 

 fourth segment less prominent; fifth segment with a narrow lateral and posterior 

 margin ; venter yellow, with two small brownish dots in the middle of the third 

 and fourth segments. Femora black ; coxae, tip of the femora, basal half of the 

 tibiae and basal joint of the tarsi yellow, tarsi and outer half of the tibiae brown ; 

 the under.side of the tibiae shows an apical and middle aunuli of black. Wings 



