THE ENTOMOLOGIST. 253 
hoppers: the latter were numerous in the grassy spots 
adjoining the sands, and were carried off by the Asilus, 
which flew with its prey down to the sands, and there 
devoured it. The species had been determined by Mr. 
Verrall to be the Asilus albiceps of Meigen, and belongs to 
Loew’s subgenus Philonicus, the only other described species 
of Philonicus being the P. dorsiger of Wiedemann, from 
Egypt. Mr. Smith added that Asilus crabroniformis was in 
swarms at Woollacombe, but appeared to confine its attacks 
to small Diptera. 
Monograph of Ephemeride.—Read, the first part of a 
Monograph of Ephemeride, by the Rev. A. E. Eaton. After 
enumerating the various collections which he had had the 
opportunity of consulting, the Author gives a bibliographical 
history of the group from the time of Clutius (1634) to the 
present day, indicating under each book the species therein 
for the first time named and characterized, and, when 
possible, the places where the type specimens, if extant, are 
deposited. Then follows a list of all the described species 
arranged in the alphabetical order of the genera; together 
with remarks on the fossil species, and a list of names of the 
fossils hitherto reputed to be Ephemeride. In the next 
portion of his paper, the Author gives the generic characters 
and habits of the Family, followed by Tables of the geogra- 
phical distribution over the globe of both genera and species, 
and arrives at the couclusion that “the number of described 
recent species of Ephemeride is about 178, exclusive of ten, 
which are either hardly determinable or probably mere con- 
ditions of well-characterized forms which have been otherwise 
named ; there are three fossil species determinable.” The 
whole of the recent genera and species (including fonr new 
genera, and twenty-five new species) are then characterized; 
and the descriptions are elucidated by numerous drawings of 
structural details. On a future occasion the Author hopes to 
give a detailed account of the organization and development 
of some characteristic British species of the Family. 
Notable British Lepidoptera.—Mr. W. C. Boyd exhibited 
some varieties of several British Lepidoptera: amongst them 
a female Colias Edusa, with the black spot on the front 
wings almost obliterated, captured in the Isle of Wight in 
1869; a dwarf Pieris Rape, captured at Cheshunt; a dwarf 
