74 General Notes. [January, 
two relatively enormous organs—the double series of secretory 
cells, and the ovary.” The double series of cells he terms 
the corpus adiposum, and homologizes it with the intestine 
of other nematoids. Lubbock mentions briefly the prolificacy 
of Sphzrularia, and the mode of development of its eggs. 
He discovered that the parasite was only present in large females 
of Bombus, but he was unable to trace its metamorphosis, and to 
discover how the bees were infected. 
In a later paper Lubbock gives a brief account of his further 
studies on Spherularia. He succeeded in keeping the young 
alive several weeks in water, and suggests that the young pass 
from moist earth into the bees while the latter are going about in 
moss and damp grass. He found half-grown females of Sphzru- 
laria, but still always with the so-called male attached, and he 
calls attention to the peculiar cell-structure of the so-called 
females. 
Schneider was led by the cell-structure of the so-called females, 
and by the organic union between them and the little worm at 
their end, a union at a point where the sexual opening should be, 
to express the opinion that the so-called female was the evagi- 
nated and full-grown ovary of the little worm to which it was 
attached. Schneider’s opinion, derived from structure, awaited 
proof based on observation, and this has at last been furnished by 
Leuckart. 
Leuckart, in a preliminary communication in the Zoologischer 
Anzeiger of this year traces the evagination of the genital organs 
of the female to form the appendage which was so long regarded 
to be the female itself, the subsequent growth of the appendage, 
and the origin and homological significance of its parts. This 
worm-like body may even lose the minute female from which it 
was originally an evagination even before its eggs are ripe. 
Lubbock, in the paper already mentioned, and Linstow, in 
his “ Compendium der Helminthologie,” enumerate the species 
of Bombus in which Spherularia bombi has been found; the 
former author gives their relative abundance in different species 
of bees, and states that the number of Sphzrulariz usually pres- 
ent in a single bee is from four to eight, but in one specimen he 
obtained no less than thirty-four, the greater number of which 
were full-grown. In some European species of Bombus one-half 
the large females which have hibernated contain these parasites 
in May and June. 
Wishing to see if Sphzrularia was to be found in America, I 
examined ten specimens of Bombus taken on the roth of June 
last, in Cambridge, Mass. The species of Bombus were not 
determined. Only two of the specimens were parasitized; in one 
was a single Spheerularia, in the other were two. The Spheeru- 
laria found single was 2.9 centimeters in length; each of the 
other specimens was a trifle shorter. Nothing seemed to indi- 
appren 
