1886, } Entomology. 169 
ment when not feeding, and in all ways taking up the habits of 
this group of noctuid larve. 
Being transferred to a cage provided with earth, they at once 
buried themselves, but came out at night to feed. They continued 
this life for perhaps a fortnight, when they gradually left off feed- 
ing. Just when pupation occurred it was impossible to tell, as the 
larvee remained in the ground some time in a torpid state before 
this change took place, and at this time many of them died. 
The pupæ, which had been reserved for description, were 
unfortunately destroyed by mice. They were of a dark shining 
brown color, rather thick and blunt at the anal extremity, and 
somewhat flattened at the thorax. The molts emerged from the 
20th to the 30th of September, some two months or more after 
pupation probably took place.—Howard L. Clark, Provi- 
dence, R. L. 
MORPHOLOGY OF LepipoprerA.—In the Zeitschrift für Wissen. 
Žoologie for Oct. 27, N. Cholodkovsky states that it has been 
found that three species of the Linnæan genus Tinea possess 
only two Malpighian vessels, a most unexpected phenomenon, 
and until the present time an isolated fact in insect anatomy, 
unless we except certain Coccide, which have been found by 
Leydig and Mark to also possess but two Malpighian tubes. 
On the other hand, Cholodkovsky has found in Galleria mellon- 
ella Linn. a very peculiar form of Malpighian vessel, which up to 
now has been described in no other insects, and which only finds 
its parallel among the Arachnida. This example is an illustration, 
he says, of the utter incompleteness of our present knowledge o 
insect anatomy. 
In several female NMematois metallicus Pod. Cholodskovsky 
found that each ovary consisted of not less than twelve, and in 
one case twenty egg-tubes. The number of egg-tubes in Lepi- 
doptera generally is four. There is only a single known excep- 
tion to this rule. Dr. Alexander Brandt in 1876 discovered that 
Psyche helix possessed on each side six egg-tubes, while Profes- 
sor Ed. Brandt stated verbally that Sesia scolitformis possesses 
fourteen egg-tubes. 
Cholodkovsky then describes the external and internal geni- — 
talia of Nematois, and, in describing the ovipositor, refers to the 
much more highly organized ovipositor of the common house- 
moth (Tineola biselliella). 
All Lepidoptera possess two compound testes, which in the 
greater number are united by a complicated set of coverings into 
an unpaired organ. Since each testis consists of four seminal fol- 
licles they are in every respect homologous with the egg-tubes of 
the females. There is anatomically a complete and clear homology 
between the female and male sexual glands of the Lepidoptera. 
is fact is not without significance in the morphology of Lepi- 
doptera, especially since it becomes a link connecting the Phry- 
