Mr. A. G. Butler on new Lepidoptera. 273 
“ Wielikce,” in the district of Lebeden, near Kharkow, for 
which he proposes the name of ‘“Dostlia Stephanowti ;” and, 
lastly, an illustrated copy of a description in Russian of this 
species &e., printed at Kharkow in 1884. 
From the spicular illustrations of Dosilia Stephanowii in 
the latter (t. vil. fig. 1, a—-d, which are neatly executed) it is 
evident that this species is closely allied to the mounted speci- 
men of Heteromeyenia repens, Potts, which the latter kindly 
sent me, as the only exceptions are that the teeth of the disks 
in the birotules are not so claw-like or recurved, and the 
long spines of the flesh-spicules not inflated at the extremities, 
as in /T. repens; but there are the same sparsely-spined 
skeletal spicules to be seen in both instances. 
Thus another species of freshwater sponge analogous to 
Meyenia plumosa of Bombay and Heteromeyenia repens of 
Pennsylvania, if not to M/. Bazleyt also, has been found in 
Europe (¢. e. in Southern Russia). As the skeletal spicule 
of M. Baileyi is not stated by Dr. Bowerbank to be spined, 
and the illustration is smooth (Proc. Zool. Soc. Nov. 1863, 
p- 13, pl. xxxvin. fig. 6, a), I cannot confidently affirm 
that in this respect also ¢# accorded with that of Dosilia 
Stephanowtt. In Mr. Potts’s mounted specimen of Hetero- 
meyenia repens (? Meyenia Baileyi) there are smooth as well 
as sparsely spined skeletal spicules present. Unfortunately 
there only exist the slides (three) of MZ. Bacley? in the British 
Museum for comparison ; but this object has just (20th March, 
1884) been kindly effected for me by Mr. 8. O. Ridley, F.L.S., 
of the British Museum, who concludes his statement as fol- 
lows, viz.: —‘‘ The specimens are nearly related, but, at the 
same time, it is not difficult to separate them under the micro- 
scope ;’’ while I gather from the rest of his letter that the 
differences are hardly sufficient to constitute even a variety ; 
hence it may be considered that Mr. Potts’s and my conjec- 
tures respecung the identity of Meyenia (Spongilla, Bk.) 
Baileyt and Heteroneyenia repens are correct. 
XXXI.—Deseriptions of five new Species of Heterocerous 
Lepidoptera from Yesso. By ArruurG. Butter, F.L.S., 
¥.Z.8., &e. 
Tne following species were recently selected from a collection 
sent home by Mr. Henry Pryer :— 
