244 ZOOLOGY. 
The chestnut tree has been found to be tenanted by the larva of, 
Arrhopalus fulminans (Fig. 51) while a new borer of elm trees 
has been discovered by Mr. G. D. Smith in the larva of Physocne- 
mum brevilineum Say (Fig. 52).— A. S. P. 
Proressor Copr’s Cave Crustaceans. — Dr. Hagen in the last 
volume of the Naruratist, p. 494, has called attention to the blind 
crawfish described by Prof. Cope in the article on Wyandotte Cave 
in the same volume, p. 406, but no one seems to have noticed the 
. peculiar characters of the other crustaceans described in the same 
paper. As Prof. Cope’s article, with its figures, has been copied 
in “Nature ”. and republished without change in the last ‘ Annual 
Report of the Geological Survey of Indiana,” and very likely in 
other ag it seems quite time these remarkable animals should 
be noticed. 
The ‘‘Gammaroid crustacean ” from Mammoth Cave (Stygobro- , 
mus vitreus Cope) has a description so uncertain and confused that 
we wholly fail to comprehend the appellations given to the caudal 
appendages, without supposing Prof. Cope to have entirely mis- 
understood their structure and relation in Niphargus, and conse- 
quently in all gammaroid crustaceans. He speaks of the body in 
Niphargus “ terminating in a very long style” and of the “last 
abdominal limb” as “ undivided like that which precedes it.” The 
. long style must be one of the posterior pair of caudal stylets, and 
“ the last abdominal limb ” and “ that which precedes it” must refer 
to the first and second caudal stylets, which are not simple but 
bi-ramus. 
The “ unknown crustacean with external egg-pouches,” referred 
to the genus Cecidotea, possesses characters before quite unknown 
7 Isopods. The female is described and figured as a Tetrade- 
capod-like crustacean with egg-sacks, like those of many Entomos- 
traca, attached to the extremity of the abdomen, while in the 
females of all previously known Tetradecapods, the eggs are 
carried within lamellz arising from the bases of the thoracic legs.’ 
Its supposed affinities with IJdotea are still more obscured by the 
only allusion which is made to the mouth appendages, a figure 
labelled as “the mandible and palpi of right side,” with the ex- 
: = that “ the outer palpus lies above the lateral plate, and 
: its origin was not seen.” Although it is difficult to determine what — 
oo * referred to Fe are, it seems to be implied that 
