AST. 28 CHALCID FLIES NOETH OF MEXICO BALDUF 45 



is probably of the same series of record numbers as 55k for which the 

 accompanying data are at hand), from cynipid gall on Q. chryso- 

 lepis, the galls collected October 8, 1885, and the chalcids issuing 

 December 19, 1885; 1 female (3798''^) from D. chrysolepidis Beuten- 

 mueller on Q. chrysolepis collected at Colfax, Placer County, by Al- 

 bert Koebele, the galls having been received at Washington, D. C., on 

 October 17, 1885, and the insects issued December 28 of that year; 

 1 female labeled Mountain View, Calif., Ehrhorn lot 2; 2 females 

 (55*) are from Sonoma County, Calif.; 1 male (59°) was collected in 

 Placer County, Calif., in February, 1886; and 1 female (3837^) was 

 reared in January 19, 1886, from a cynipid gall on Q. douglasi, 

 Marin County, Calif. A typical female of variety doanei is in the 

 collection of the Illinois State Natural History Survey, collected in 

 Colorado and bearing number 1256. 



Three females sent me by C. N. Ainslie and collected by him by 

 sweeping alfalfa at Salt Lake, Utah, and bearing Webster No. 5595, 

 seem to be this species. It is probable that they were taken in the 

 vicinity of cynipid-infested oaks. 



The general similarity of variety doanei Fullaway to duhia Walsh 

 in size, color pattern, sculpture, and vestiture, and their common 

 occurrence in the galls of different species of the genus Disholcaspis^ 

 compel me to conclude that doanei is not a distinct species but only 

 a geographic variety. Even as such, it is separable from the typical 

 form dubia only by inconstant characters of average size, and the 

 number of setae on the submarginal vein. The series of California 

 material at hand is so small that no conclusions concerning the limits 

 of these characters can be formed at present. The variety rufosa 

 Balduf , known in greatest numbers to date from the Southern States, 

 is much more distinct from the typical dubia than is the variety 

 doanei Fullaway. 



16. DECATOMA LOBATAE, new species 



Plate 2, Figueb 15 



Closest to hrevilohae^ new species from Texas, in being the same 

 size, in having the same number of setae on the submarginal vein, 

 and in the similar form of the submarginal band. D. lohatae, how- 

 ever, is in general lighter in color and differs especially in the 

 longer and more narrow head and the more strongly convex front. 

 The funicular joints are also shorter, being as broad as long, or 

 slightly broader than long. 



Female. — Length 2.3 to 2.6 mm., colors yellow, yellowish brown, 

 reddish brown, and brownish black or black; head mostly light 

 brownish yellow, onl}' the neck below, ocellar area, and occiput 

 around the foramen black; upper part of face black, and the black 

 of vertex and occiput faintly confluent on one specimen, but well 



