AKT. 28 CHALCID FLIES NORTH OF MEXICO BALDUF 61 



legs and the extent of development of the submarginal band of the 

 front wing. D. florida falls in the old genus Eudecatoma of Ash- 

 mead, there being but the usual faint trace of a submarginal band 

 on the inner edge of the stigma. It is consistently rudimentary in 

 the whole series of 10 females at hand. Correlated with the absence 

 of the band is the yellow of all parts of the legs except the coxae, 

 which are black. 



Neither of the two species is known to date from areas between 

 Florida and New Mexico or from States just west and north of the 

 latter. A series of both sexes from Oracle, Ariz., has in it a pair 

 that must, by all the characters known, be classified as D. florida. 

 No color band is present, and the legs are yellow beyond the coxae. 

 All the other specimens of this series from that locality, however, and 

 a number of individuals from Prescott, Ariz., have all the legs more 

 or less black, as in the typical D. occidentalis from California, and 

 the color band is in almost every instance not full}'- formed, usually 

 being only one-half as long as on the California members of the 

 species where it is somewhat more than twice as long as broad and 

 broadly curved. Another good series, from Sycamore Flat, Ariz., 

 has mostly black legs like those of the Oracle lot, but the band of the 

 wing is fully formed in the majority of specimens. Material from 

 Colorado Springs, Colo., compares favorably with the latter. Three 

 lots, from Tijeras, N. Mex. ; Esparara Canon, Ariz. ; and Los Gatos, 

 Calif., respectively, have complete bands almost without exception. 

 The band is not abbreviated in any of the specimens from Pasadena, 

 El Portal, Dunsmuir, Placerville, Paso Kobles, Napa, and Gait, 

 Calif. There is a little evidence that -florida inhabits galls of Andri- 

 cus -fioGGi (Walsh) in Florida, and Kinsey reared the Prescott, Ariz., 

 lot from galls of Gynips, and the typical California occidentalis from 

 Andricus, Plagiotrochus, and Disholcaspis. Weld reared the lot 

 from Esparara Canon, Ariz., from the galls of Adle7^ia. 



This instance particularly throws doubt on the value of Eudeca- 

 toma Ashmead as a distinct genus, in view of the extreme variation in 

 length of the submarginal band. 



23. DECATOMA OCCmENTALIS FLAVIFKONS, new Tariety 



Differs from the typical D. occidentalis Balduf only in color, hav- 

 ing the face and cheeks mostly yellow, the pronotum and legs more 

 yellow, and sides of mesothorax in part so. The dimensions of the 

 funicular joints and the head, the sculpturing of the head, meso- 

 pleura and abdomen, and the number of setae on the submarginal 

 vein agree with the typical black form of this species. The wing 

 band is shortened as in typical specimens from the Southwestern 

 States. 



