144 
ZOOLOGICAL LITERATURE. 
\ conservees aux musees de Leide et d^ Amsterdam. Natuurk. 
Verhandl. Holl. Maatsch.Wet. Haarlem^ 1864 (pp. 104^ with 
I 16 coloured plates) . 
I This paper contains descriptions of 45 species from Dutch 
I Guiana, found in the Dutch collections. Although all 
I have been previously described, yet the paper is valuable, in- 
j asmuch as several species which were imperfectly known are 
illustrated by very good figures. 
WiNCHELL, A. Description of a Gar-pike, supposed to be new^ 
Lepidosteus {Cylindrosteus) oculatus. Proc. Acad. Nat. Sc. 
Philad. 1864, August (pp. 183-185). 
Gill, Th. Note on the Paralepidoids and Microstomatoids, 
and on some Peculiarities of Arctic Ichthyology. Proc. 
' Acad. Nat. Sc. Philad. 1864, September (pp. 187-189). 
Gill, Th. Synopsis of the Cyclopteroids of Eastern North 
America. Ibid. (pp. 189-194). 
The author enumerates 8 species, one of which is described 
as new. 
Gill, Th. Synopsis of the Pleiironectoids of California and 
North-Western America. Ibid. (pp. 194-199). 
This synopsis is an enumeration of 1 7 species, one of which 
is new; they are referred to 12 genera, which are shortly cha- 
racterized. 
Gill, Th. On the affinities of several doubtful British Fishes. 
Proc. Acad. Nat. Sc. Philad. 1864, September (pp. 199-208). 
Gill, Th. Note on the family of Stichseoids. Ibid. (pp. 208- 
210 ). 
Gill, Th. Synopsis of the Pleuronectoids of the Eastern coast 
of North America. Ibid. October (pp. 214-224). 
The author enumerates 16 species, which he refers to 14 genera 
as restricted by him. Of two only, which are new, descriptions 
are given. The American species are but imperfectly known, 
owing to the deficient descriptions of previous authors ; and 
Mr. Gill would much advance Ichthyology by giving us service- 
able descriptions, instead of limiting himself to synoptical tables 
with minute pseudo -generic subdivisions. As regards his fre- 
quent critical remarks on synonyms, it would be very useful if he 
would state whether he arrived at his conclusions from an exa- 
mination of the typical specimens ; but frequently it is not even 
evident whether he has known the species from autopsy. 
Cope, E. D. On a Blind Silurid, from Pennsylvania. Proc. 
Acad. Nat. Sc. Philad. 1864, October (pp. 231-233). 
