20 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65. 



H. Compere, from Saissetia oleae upon which they were believed to 

 be secondary; one specimen from Santa Maria, California, reared 

 by H. Compere, from Physohet'^nes inslgnicola and probably para- 

 sitic upon Aphycus physokennes Timberlake which was known to be 

 present; and one specimen reared from S. oleae by H. S. Smith, in 

 California, the exact locality not given. 



Study of this new and better material in conjunction with the 

 types has convinced the writer that hlepyri Ashmead and deteri- 

 mentosus Gahan are the same species. 



The species is without much doubt normally a secondary parasite 

 of various scale insects and Coccinellidae and appears to be quite 

 widely distributed in North America and may also be found else- 

 where. 



Superfamily SERPHOIDEA. 



Family SCELIONIDAE. 



Subfamily Baeinae 



Genus BAEUS Haliday. 



All descriptions apparently credit the wingless females of this 

 genus with having the scutellum absent. As viewed by the writer 

 this is not strictly true of the species standing under this name in the 

 National Collection. Tlie mesoscutum is large, occupying most of the 

 thoracic dorsum, but between this sclerite and the abdomen are two 

 transversely linear sclerites, variable in size but always discernible. 

 These two plates apparently represent the scutellum and propodeum 

 respectively. The anterior plate is usually somewhat longer (antero- 

 posteriorly) than the posterior and the latter bears what appear to be 

 the very minute spiracles. 



BAEUS ROTUNDIVENTRIS. new species. 



Very similar to B. piceiis Ashmead but slightly larger, a little 

 more strongly sculptured on thorax and abdomen, the abdomen more 

 rotund, the antennal club blackish instead of reddish testaceous, and 

 the head somewhat lighter in color. Also similar to 7iiger Ashmead 

 but may be distinguished at once by the broader and more rounded 

 abdomen, which is more sparsely clothed with longer hairs, and by 

 the somewhat longer though strongly transverse propodeal sclerite. 



Female. — Lengths 0.8 nun. Wingless. Head, thorax, and abdomen 

 more or less shining, but with distinct, fine reticulate sculpture and 

 sparsely clothed with rather long hairs; eyes distinctly hairy; an- 

 tennae 7-jointed, the club solid and longer than the funicle; first 

 funicle joint the longest of the funicle joints, pedunculate at base; 

 following joints of funicle slightly broader than long; pedicel large, 



