23G PROC. ENT. soc. WASH., VOL. 22, NO. 9, DEC., 1920 



the old style Division of Entomology breeding number 2246 

 and in addition a name label in L. O. Howard's handwriting. 

 Upon consulting the records under the number 2246 in the 

 Bureau of Entomology, it was positively determined that the 

 three specimens in question were reared in May 1881 from material 

 received from Mr. J. K. P. Wallace of Andersonville, Tennessee. 

 This data checks exactly with that given by Riley for his types and 

 since the specimens agree in every way with the original de- 

 scription there can be no doubt that they are actually the speci- 

 mens from which the description was drawn. 1 As represented by 

 these types, Stictonotus isosomatis Riley is identical with the 

 Callimomid, Eridontomerus primus Crawford. Riley's description 

 antedates that by Crawford and the species will, therefore, have 

 to be known in the future as Eridontomerus isosomatis Riley. 



How the identity of this species became so confused it is im- 

 possible to say. The fact remains that the insect which has been 

 repeatedly referred to under the name of isosomatis by Webster, 

 Kelly, and others, and which has been placed at different times 

 in the genera, Stictonotus, Merisus, and Semiotellus is an entirely 

 different species from that to which Riley gave the name. (See 

 Merisus febriculosus, p. 238 seq.). 



Eridontomerus isosomatis is, so far as present records show, 

 exclusively parasitic in the species of (Isosoma) Harmolita, or 

 joint worm flies, and probably occurs from coast to coast of the 

 United States. 



The record in Viereck's Hymenoptera of Connecticut cited 

 above consists of a quotation of Riley's original description 

 coupled with records of occurrence of the species in Connecticut. 

 It is more than likely that the Connecticut breeding records there 

 set forth really refer to Merisus febriculosus Girault. 



Ditropinotus aureoviridis Crawford. 

 Ditropinotus flavicoxus Gahan, Proc. Ent. Soc. Wash., 14, 1912, p. 5. 



The females of this species are evidently quite variable in color. 

 Types of aureoviridis, of which there are eight female specimens 

 in the series, have the entire thorax as well as the middle and hind 

 coxae except apically metallic green, and the abdomen dorsally 

 brown. There is some variation in the extent of the metallic 

 coloration of the coxae, some specimens having them metallic 

 only basally. The type series of flavicoxus, on the other hand, 

 which includes eight females, shows the underside of almost the 

 whole thorax from the tegulae downward, all coxae, and in some 



1 Dr. L. O. Howard informs me that he drafted the original description 

 of Stictonotus isosomatis for Professor Riley, and he confirms my identifica- 

 tion of the type specimens. 



