134 A. EF. Verrili— North American Fresh-water Leeches. 
marginal spots. The three folds of the cesophagns are about 
as in the preceding species. The color above is dull dark 
orange-brown, with numerous fine longitudinal lines, alternately — 
scattered unevenly over the surface, except along the mid 
the back ; an obsure reddish line passes along each side ne 
the margin, apparently due to an internal vessel showing — 
through the integuments. Lower surface plain, dull orange 
brown, somewhat lighter than the back. Head light flesh-color 
Whitneyville Lake,—A. E. Verrill. 
Nephelis marmorata Verrill. 
Hirudo marmorata Say, op. cit., p. 267. 
(?) Nephelis punctata Leidy, Proc. Acad. Nat. Sci. of Philad., 1870, p. 89. 
This species, found by Say associated with the ie 
appears to differ in no important particulars, and may be on 
darker and lighter, and with many small irregular black By ‘ 
lle of 
e near 
te 
7 
; : ae 
a differently colored variety of the same species. Itis described 
as blackish or fuscous, with irregular whitish or light colored — 
spots; beneath pale, generally immaculate, but sometimes with 
confluent black spots. Ocular points six, in a regularly curve 
ine. pea 
_ When a larger series of living specimens from various local 
ties can be studied, the three preceding forms, admitted here as 
species , 
variable than the Nephelis vulgaris of Europe. e agreement 
in the number and arrangement of the oceili is very close 2 
the three forms. 7 
The leech described by Dr. Leidy from the vicinity of Phila 
delphia, and Beverly, N J, appears to, differ in no essential 
characters. It was blackish olivaceous above, the anv 
minutely punctate with yellowish olivaceous or dusky white 
and narrowly bordered with the same; beneath grayish. 
Nephelis fervida Verrill, described in the December number 
of this Journal, from Lake Superior, appears to be quite dis 
tinct from any of the preceding, judging from the preserve 
oie geet The eight ocelli are all small and nearly equ 
specimens show many faint longitudinal lines of brown. , . 
ere found 12 
August by Mr. Smith, attached to the leaves of Nupha, in * 
‘small lake near Simmon’s Harbor. These are broad ov sb 
elliptical, above smooth and convex, translucent yellows z 
brown, with a thin, flat, lighter border, each end prolongé 
slightly into a short tubular neck, with a terminal orifice 
Lower surface flat. Each contained two, three, or more oung 
leeches, mostly upwards of half an inch long, plain W i 
with eight distinct black ocelli. The largest capsule was bad 
