32 Journal New York Entomological Society. [Voi. xii. 



Mexico. These latter species are listed herewith while the descrip- 

 tions of the new ones follow the list : 



Plecia bicolor Bell. 

 Obliogaster tasniatus Bell. 

 Sphasrophoria picticauda Bigot. 

 Rhopalosyrphus guntheri Arrib. 

 Sphiximorpha pedicellata Will. 

 Masicera picta Wulp. 

 Micropeza stigmatica Wulp. 

 Diacrita costalis Gerst. 



Cyphomyia schaefferi, new species. 



Near tomentosa , but that species is credited with nearly hyaline, yellowish wings, 

 a polished black front and face, etc. Black, the upper part of the head dark reddish- 

 brown, scutellar spines, first two joints of the tarsi, and the halteres, yellowish ; front 

 somewhat polished, bearing a transverse pair of widely separated tubercles above its 

 middle, and midway between these and the antennoe is a transverse pair of nearly con- 

 tiguous, highly polished callosities in contact with the eyes ; a narrow ridge extends 

 from ocelli almost to the antennre ; face somewhat polished, thinly covered with pale 

 yellowish tomentum ; antennae shorter than the thorax, the first joint twice as long as 

 the second, the latter as wide as long, the third twice as long as the first two, of nearly 

 an equal width, blunt-pointed at the apex, the eighth annulus shorter than the seventh ; 

 eyes rather densely pilose, greenish and marked with about six transverse, undulating, 

 purplish bands ; thorax and scutellum somewhat opaque, thinly covered with a short, 

 pale yellowish tomentum ; abdomen somewhat opaque, its tomentum golden yellow, 

 sparse on the first two segments but dense on the other two ; wings brownish, the base, 

 proximal half of axillary cell, discal cell, upper outer angle of second basal cell and 

 base of the first posterior cell, hyaline, stigma yellow ; length, 8 mm. 



A female specimen collected in June. Respectfully dedicated to 

 Mr. Charles Schaeffer. 



Phthiria unimaculata, new species. 



Near scolopax, but each cheek marked with a single black spot. Head yellow, 

 middle of front brown, a spot at the ocelli, the center of the occiput, and a large, sub- 

 quadrate spot on each cheek just below the front and extending from the eye almost 

 to the oral border, black ; antennse and mouth parts black, proboscis slightly over one 

 half as long as the head and body, apex of palpi about opposite middle of third anten- 

 nal joint, the latter of nearly an equal width, its upper and lower edges only slightly 

 convex. Body yellow, mesonotum with three broad vittse and the narrow lateral mar- 

 gin brown, the median vitta extending from the front end to slightly beyond the mid- 

 dle, the next two unite at the hind margin of the mesonotum, a spot near center of 

 pleura, the breast, middle of metanotum, and a crossband at base of each abdominal 

 segment, brown ; mesonotum opaque, gray pruinose, the abdomen polished, scutellum 

 with a brownish spot at the middle of its base ; legs yellow, the tarsi brown ; halteres 

 yellow, the knobs on greater part of upper side and at base of under side brown ; 



