22 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Eucactophagus biocellatus n. sp. (PI. 4, fig. 5.) 

 Type: Cat. No. 21069, U. S. N. M. 



Very similar to E. aurocinctus Champ, but conspicuously different 

 in that the yellow area occupies the basal three-fourths of the elytra ex- 

 cept the humerus and encloses a piceous macula occupying third, fourth 

 and fifth interstices just before middle of elytra. The strial punctures 

 are more deeply impressed and the interstices more convex than in 

 aurocinctus. The first stria is arcuate basally and joins the second stria 

 beside the scutellum. The third interstice is twice as wide at base as the 

 fourth, the seventh interstice but little more than half as wide throughout 

 its length as the others. The antennal scape is stouter basally and less 

 swollen apically, and is feebly arcuate in basal half. Length 10mm., 

 width 4.8 mm. 



Described from a single specimen received about 1912 from 

 F. H. Jackson at Las Cascades, Canal Zone, Panama. The 

 black discal elytral spots occupy part of the area occupied by the 

 yellow fascia in the cotype of aurocinctus illustrated by Champion 

 which is before me (U. S. Nat. Mus. Cotype No. 21070), so it is 

 improbable that it might be merely a form of that species with the 

 yellow fascia more extended. 



EXPLANATION OF PLATE IV. 



1. 1A, IB. Cholus forbesii Pascoe. 



2. Cholus catteleyae Champ. Abnormal specimen (perhaps hybrid) in 

 collection of Amer. Mus. Nat. Hist., displaying thoracic vestiture as in C. 

 forbesii. For normal coloration see plate facing p. 178, Proc. Ent. Soc. 

 Wash. 1916. 



3. 3A. Acythopeus gilvonolatus n. sp. Type. (Photo, by Paine.) 



4. Eucactophagus weissi n. sp. Type. 



4A, 4B. Largest paratype. (Dark lines on cb- 



domen and metasternum of 4B are shadows of legs.) 



5. Eucactophagus biocellatus n. sp. Type. 



THREE NEW TAGHINID PARASITES OF ELEODES. 



BY W. R. WALTON, 

 Bureau of Entomology, U. S. Department of Agriculture. 



The three forms described below constitute an addition to our 

 knowledge of the dipterous parasites of the imagines in Coleoptera. 

 Two of them represent a well marked genus, apparently new to 

 science. The remaining form is a true Biomyia, a genus already 

 known as being parasitic on adult beetles. The American species 



