ON THE WYANDOTTE CAVE AND ITS FAUNA. 415 
This is a narrow passage between masses of rock, which rises 
from the end of a gallery to the floor of a large room called the 
senate chamber. Though living at a distance of four or five miles 
from the mouth of the cave, this species is furnished with eyes. 
Its limbs are not very long, but its palpi are largely developed, 
and armed with a double row of long spines pinnately arranged, 
like its relative of the Mammoth Cave, the Acanthocheir. This 
species is described at the end of the ar- 
ticle as Erebomaster flavescens Cope. In 
its relationships it may be said to stand 
tween Acanthocheir and Gonyleptes. 
Besides Acanthocheir, another blind 
Gonyleptid exists in the Mammoth Cave, 
which I found several miles from the feazstuese oo er magni 
mouth. It is blind like the former, but differs in having many 
more joints to the tarsi, approaching thus the true Phalangia, or 
long-legs. There are six joints and terminal claws, while Acan- 
thocheir is said to have two and Erebomaster three joints. It is 
larger than A. armata, and has much longer legs. Its palpi are 
also longer and their spines terminate in long hairs. I have 
named it Phriwis longipes. 
Dr. Packard and Mr. Putnam have already discussed the ques- 
Fis.u5. tion of the probability of the origin of these blind cave 
; animals by descent from out-door species having eyes. I 
haye already expressed myself in favor of such view, and 
deem that in order to prove it, we neéd only establish two 
\ or three propositions. First, that there are eyed genera 
p Erebo- corresponding closely in other general characters with the 
bres blind ones ; second, that the condition of the visual organs 
ry mei is in some cave type variable; third, if the abortion of the 
Mow. visual organs can be shown to take place coincidentally 
Wita general growth to maturity, an important point is gained in 
explanation of the modus operandi of the process. 
‘First, as to corresponding forms; the Typhlichthys of the 
Mammoth is identical} with Chologaster, except in its lack of eyes. 
da tt engraver has rectly 1 th terior lateral border of the large 
- bair oe Um The mandible should also have been represented as terminating in a 
Pair of nippers.— Eps, 
Trap tnam shows that the known species of Chologaster differ oe those of 
whiichthys Im the lack of the ‘papillary ridges, which is probably another generic 
Character er : , ‘ . 
Similar to the loss of eyes. The absence in Chologaster of minute palatine 
