45 
Westwood does not designate either tlie host or the geographical 
habitat of this species, but from his description and colored illustra- 
tion, together with the appended note on its occurrence, which is 
summed up in the legend "Habitat parasitica in Zeae Maydis semini- 
bus,"' it is reasonably certain that the specimens in hand are referable 
to the Westwood species. It is in all probability identical also with 
the species considered by Fitch (1. c.) to be either Cerocephaia formici- 
formis Westw.. "or a very closely allied species/' bred from one or 
both of the grain-feeding Calandras in England. It is not the true 
Theocolax formici for mis, as I have been able to verify by comparing the 
Peruvian specimens with Westwood's figure, as well as with an exam- 
ple of the latter in the collection of Mr. Ashmead. The formiciformis 
was bred from "dead timber flooring infested with the larvae of 
Anobium striatum," a European household beetle (Thesaurus, etc., 
p. 138), and from worm-eaten ash infested with Hylesinus fraxini 
(Entomologist, 1. c). From the description and the hosts given it 
is evidently a distinct species. 
Since the above was written the same species was recognized in a lot 
of sweet-pea seeds from Philadelphia, Pa., infested with the drug-store 
beetle, Sitodrepa panicea. As this was the only beetle living in these 
seeds at the time, there is no doubt whatever that this Cerocephaia is 
a parasite of it. It is equally certain that this parasite has already 
been introduced in this country. It may be noted here that the 
PtcromaJn.s calandrce of Howard is known to prey upon both Calandra 
and Sitodrepa. 
