Entomology. 367 
fluid; while after death from a hyphomycosis the often flaccid 
body hardens and mummifies without decay, usually swelling to 
more than its usual size, and frequently becoming covered with a 
flour-like efflorescence of spores or spore-like bodies. 
These last characters distinguish the hyphomycoses from the 
_pébrine, — the body mummifying in the latter, but shriveling at 
the same time and never covering itself with spores, unless with 
those of a common mould of post mortem development. Further, 
the pébrine mummy contains only the minute oval spores of the 
parasite, while that of a hyphomycosis contains either a mass of 
mycelial threads or large thick-walled, spherical spores, — the 
lasting spores of the Hntomophthora, or, possibly, both spores and 
mycelium together, 
Examples of Schizomycoses, diseases produced by bacteria, are 
and fi 
Jlacherie of the silkworm and foul brood of bee larvæ. Amon 
the hypomycoses are muscardine a e common house-fly 
fungus, a In fact, nine-tenths of the adult and 
THE PROGENITORS oF Myriapops AND Insects. — Under 
this title Professor B. Grassi! discusses the classification of the 
Thysanura, describes several new species of Lepisma, gives an 
account of the anatomy of } nd Lepismina, and discusses 
the musculature of Thysanura. The last topic is. of especial 
Interest at this time as bearing on the separation, proposed by 
Brauer, of insects into two groups of equivalent rank, the Apterygo- 
genea and the Pterygogenea, the former group containing only the 
Thysannra, the latter, all other insects. Professor Grassi was 
unable to discover in the musculature of Thysanura any indication 
of the previous existence of wings, thus confirming Brauer’s view 
that these insects were “ originally wingless,” instead of, as in the 
case of wingless forms in the higher orders, being descended from 
Winged ancestors. 
The longest article contained in the Proceedings of the 
Zoological Soci Mr. E. B. 
in insects. Tt contains the tabulated results of extensive experi- 
mental researches, 
* Bull. Soc. Entomol. Ital. XIX. (1887), pp. 52-74. 
