1894-] ENTOMOLOGICAL NEWS. 197 



lowing synopsis of the genera, in the hopes that it may be of 

 service to others. 



Sapromyzinae. Small species, seldom more than seven millimeters in 

 length. Head as broad or a little broader than the thorax; front with one 

 or two bristles on each side in front of those at the vertex. Antennae 

 usually short and porrect; sometimes the third joint elongated. Face 

 without vibrissae. Abdomen short-ovate. Legs never elongate; auxiliary 

 vein of the \vings present; cross-veins never approximated; basal cells 

 small, but complete. 



i. All the tibiae with a preapical bristle ; ovipositor flattened, horny; 

 bristles of the front never reaching below the middle .... 2. 

 All the tibiae, or at least the front and middle pairs, with a preapical 

 bristle; bristles of the front descending below the middle; ovi- 

 positor not horny 3. 



2. Metallic black species, front narrow Louchaea. 



Yellow, or yellowish species; front broad Palloptera. 



3. Arista thickened and with short, dense plumosity . . Pachycerina. 



Arista slender, base, pubescent or plumose 4. 



4. Face very broad, in profile strongly convex below . . Physogenua. 



Face receding, flattened, or gently arched 5. 



5. First posterior cell much narrowed in the margin . . Griphonenra. 

 First posterior cell not or but slightly narrowed in the margin . . 6. 

 6. Shining black species; third joint of antennae more or less elongate. 



Lauxania. 



More or less yellow species, at least the thorax not shining black; 

 third joint of the antennae not more than three times as long as 

 wide Sapromyza. 



Sapromyza longipennis, S. lupulina, S. vulgaris and ^. coin- 

 pedita, occur on the Pacific coast, at least all but the first, which 

 I have seen from Kansas. .SI vulgaris I have also taken from 

 the West Indies. It is identical with 6". ocellaris Towns. , and, 

 notwithstanding the abdominal bands, is doubtfully distinct from 

 .5". cincta from Texas and Porto Rico (Roeder). 5". macula Loew 

 seems to be the same as ,5". odopuncta from the West Indies and 

 South America. ,S\ plagosa Giglio-Tos. from Mexico, is the 

 same as 6". geminata Wied., which I have from Brazil. Pallop- 

 tera J2icunda Loew, from Sitkha, occurs also in Washington and 

 California. Sapromyza urina Giglio-Tos, from Mexico, seems 

 identical with Physogenua ferruginea Schiner, which I have from 

 Brazil. In any event, it is a Physogenua and not a Sapromyza. 

 Pachycerina verticalis Loew apparently extends over the greater 

 part of the United States. I have seen it from Florida, Connec- 

 ticut and Kansas. 



