248 Scientific Intelligence. 
Greenland seas (Pedicellaster Lend tth. ystallus Sladen); but it is 
possible that a Pedicellaster dredged in the Gulf of St. Lawrence 
several years ago, by Mr. auistiead ntl. sent me a specimen, in 
land s Cles ; - Ophio lypha PO occurs on abe Grand Banks 
and in the Gulf a St. Aogit rence (Whiteaves) ; Amphiura Holbcelli 
oceurs in the St. Lawrence ; while Ophiocten sericeum 
ea and ae a wie Duncan appear to be confined 
o the arctic waters. Th er is, howev ver, closely related to 
Optophaehe COptioplednay pusaniains V.,* described in the last 
number of this Journal, which has been ‘taken by us, several 
Hige can no longer be regarded as peculiar to the arctic region 
Of the three crinoids one ( Antodlon Eschrichtit) is recognized as 
he 
celtica Norm. and A. prolixa Sladen are not known from our 
coast, unless the latter be the same as some of the forms that I 
have hitherto called A. Sarsii, our sO species, which it 
certainly netege resembles, in some r 
In discussing the geographical distribution of the species the 
authors ie the large number of species that extend south- 
ward along the North American coast to Nova Scotia, Maine, 
etc., but in a number of cases the range on our coast, as deter- 
mined by our later researches, is more southern than they give. 
Thus, Cucumaria [ Pentacta] frondosa, Psolus [ Lophothuria] Fa- 
bricii, Ctenodiscus corniculatus |=crispatus|, aba rie — 
losa, ‘Astrophyton Agassizii have all occurred south of Cape Cod; 
Ophiopholis ae  eesterevsid are common as far south, at least, 
rence and Nova Scotia; 22 extend to the Gulf of Maine; 11 pass 
the the south of Cape Cod; 5 extend to the region off arr ae: 
E. 
8. Discover ‘y of arare fresh-water shell ( loners ge in eoutien 
New York; by Joun M. Cooxe.—In the summer of 1880 I found 
several individuals of this genus in the waters es a “Sucker 
flows through the village of Canandaigua, N. 
The s ecies geri not agree either with G@. Californica, no r @. 
Malet our two uicriass species. Four have been desorbed 
by Pfe iffer and Bourguignat from the West Indies. The spect 
mens which I found baie in a pool formed in the summer shrink- 
age of the stream. In the last season I was unable to find them 
* This species was described (p. 141) as an Ophioglypha, but it is evidently 
congeneric with Ophiopleura aretica, from which it differs in the smaller size 0 of 
the under arm- a upper arm-spines larger he flattened, differently shaped 
mouth-shields, 
