THE NAUTILUS. 37 
acters showed noteworthy variation, and I have considered them 
all P. carolinianus. 
It is worthy of record that the specimens which were sent to 
me in such excellent condition by Dr. R. C. Rush, were shipped 
in a small wooden box filled with damp, absolutely clean moss. 
Every specimen was alive. The slightest amount of dirt or 
dust in the material in which the specimens are packed is fatal. 
From one of Dr. Rush’s letters I take the liberty of quoting 
some interesting notes regarding the habits of the species. 
“*Tt is very easy to collect specimens of this species, but very 
difficult to send them any considerable distance and have them 
live. If kept too moist they suffocate, and if allowed too much 
air they dry up. I have had five-inch specimens die in twenty 
minutes in strong sunlight. To keep specimens alive, place 
them on the under side of an old piece of bark on the basement 
floor, making certain that they are absolutely in the dark. 
Feed them with any fungi and they will live for months, Cur- 
iously the large specimens of this species are not found in damp 
places in northern Ohio. They are found here in high, dry, 
hard-maple and beech forests, on stumps and Jogs which have 
not decayed much, in pockets under the bark. They feed at 
night and go back to th2 same nest every morning. Very 
rarely one will find them feeding on the under side of fungi in 
dayligat. It will interest you to know that nine of the speci- 
mens J] am sending came from a crack in a log, seven inches 
long by two inches wide, and I left seven behind. They were 
packed in like sardines.”’ 
Philomycus rushi, sp. nov. 
In alcohol, mantle smooth, drab gray above (Ridgway, 
Color Standards and Nomenclature, pl. 46, 1912), lighter on 
the sides, eye peduncles dark gray, eye spots black, tentacles, 
situated beneath and very slightly outside the eye peduncles, 
short, gray. Body terminating posteriorly in a sharp point. 
Foot narrow, half the width of the body, cream-white below, 
excepting at the anterior end, where it is dark red, fading at 
the posterior end. The separation of the foot from the body 
well defined. -The body, showing at the sides between the foot 
