490 ZOOLOGY. 
among the Astacide. Astacus — — the Mammoth 
cave, ds blind, and from the sam e absence of light; 
small abortive eye-stalks still remain in the position in which eyes 
are developed in all normal decapods. In Deidamia no trace 
whatever remains either of the eyes of sight or of their pedicels.” 
OceLt IN Butrerriies.—Forty years ago, Klug, in a memoir 
on the occurrence of ocelli in insects, remarked that these organs 
were not found in butterflies, — ‘not even in Hesperide ;” and so 
far as I know this has been the universal testimony of naturalists. 
It was therefore, with some surprise, that on removing the scales 
from the head of Lerema Accius ¢,1 discovered in the middle of 
the front, a conspicuous ocellus. Other species were examined 
with the following result: Ocelli are present in both sexes of L. 
Accius, in the ĝ at least of L. Pattenii (no 9 examined), but in 
neither sex of L. Hianna! I could not find any in the neighbor- 
ing genera. In the ¢ of L. Accius and L. Pattenii there is a 
single ocellus — lenticular and smooth; in the 2 of the former 
it is similarly situated, but broken up into three minute raised 
points, all together equal to the one ocellus of the ¢ and indica- 
ting that the latter is composed of three confluent ocelli. 
It is not a little remarkable that in other Lepidoptera possessing 
ocelli, these are always two in number, and situated behind the 
antennæ, probably (I am unable to examine specimens) upon the 
vertex. In some Hemiptera, however, the ocelli are found below 
the eyes, and in others above, so that this feature is not unprece- 
dented. It would scarcely seem as if the position of the ocelli 
had the same morphological significance as that of the other 
organs.—S. H. SCUDDER. 
N A Hasr or a Specs or Biarina. —I recently placed a 
water-snake ( Tropidonotus sipedon) of two feet in length, in a fern- 
ery which was inhabited by a shrew, either a large Blarina Caro- 
linensis or a small B. talpoides. The snake was vigorous when 
placed in the case in the afternoon and bit at every thing within 
reach. The next morning the glass sides of his prison were 
streaked with dirt and other marks, to the height of the reach of 
the snake, bearing witness to his energetic efforts to escape. pe 
was then lying on the earthen floor in an exhausted state, making & 
few ineffectual efforts to twist his body, while the Blarina was 
busy tearing out his masseter and temporal muscles. A large part 
