ZOOLOGY. 489 
no grooves about the incisors, not very long hairs or “t smellers ” 
on the nose. Coloration a brownish gray. — G. Lincecum, Long 
Point, Texas.— Communicated by the Smithsonian Institution. 
Nores on Cemiostoma. —I desire to correct a statement made 
by Mr. Mann in the June number of the NATURALIST, p; 339, viz., 
that Cemiostoma coffeellum is “the only species of Cemiostoma 
which is known outside of the limits of Europe.” 
This is a mistake. In the “ Transactions of the London Entomo- 
logical Society,” Ser. 2, Vol. v, pp. 21 and 27, and in Ser. 3, Vol. 
ii, p. 101, certainly two, and if my memory is not at fault, three 
species, are described from India, and in Vol. iii, p. 23, of the 
“Canadian Entomologist,” I have described a species, as C. albella, 
which I had then found mining the leaves of poplar trees (Populus 
aba, P. dilatata and P. monilifera). Since then I have found it 
also mining the leaves of willows (Salix alba and S. Babylonica). 
It resembles O. susinella very closely and as Susinella mines the 
leaves of P. tremuloides in Europe, I shall not be surprised if it 
proves to be that species. It would be difficult, if not impossible, 
ne to ascertain the original food plant of C. susinella (if albella is 
identical with it), But it would not be very surprising if it fed on 
the Weeping willow, and has followed its migrations from a time 
perhaps anterior to that when the Hebrews hung their harps upon 
the willows by the rivers of Babylon. 
If therefore C. albella is only a synonyme of C. susinella, it is a 
European or Asiatic species. And judging from the food plant, 
C. coffeellum is also an Asiatic (or African?) species. It would 
thus seem that we have as yet no indigenous species of Cemiostoma. 
Mr. Stainton, Dr. Clemens and others, mention a ‘‘ spring brood,” 
a fall brood,” etc., of Microlepidoptera. At page 184 of Vol. iii, 
Can, Ent., I have stated as the result of my observations that 
the Lithocalletidee (in which family I would include Lithocalletis, 
Lencanthiza, Philocnistis, Cemiostoma, Tischeria, and perhaps 
Synctia) continue to propagate their species as long as the 
eang remains warm enough: so that the number of gener- 
ons in a year is (subject to the length of time passed by each 
Son as larva, pupa and imago) a mere question of climate, and 
l SEG different generations overlap each other so that vap is wae! 
Z thing as separating them into distinct broods. This is like- 
“ise true of some species of Gracillaria. Ido not know how it is 
