436 REPORT OF NEW JERSEY STATE MUSEUM. 
upper Mississippi regions. Mr. J. M. Stratton says that several 
years ago two muskallunges were brought from Lake Erie and 
placed in Greenwood Lake. At the time of their liberation in 
New Jersey waters their weight was about 3 to 5 pounds. A few 
years later 2 were caught, weighing from 16 to 18 pounds, and 
as no others have been caught since it is reasonable to presume 
that these were the 2 which were brought from Lake Erie, evi- 
dently not propagating. 
Family CENTRARCHIDE. 
The Sun Fishes. 
Several of the larger and more noted gamy species of this - 
family have been introduced with success. 
Key to the genera. 
a. CENTRARCHIN#. Dorsal scarcely longer than anal, spines V to VIII. 
POMOXIS 
aa. Dorsal much longer than anal. 
b. LEPOMIN#. Body short and deep; scales ctenoid; caudal concave; 
A. spines V to VIII; lingual teeth in a single patch. AMBLOPLITES 
bb. MicroprertIn®. Body elongate, depth of adult 3; caudal lunate; A. 
spines III; lingual teeth obsolete. - MICROPTERUS 
Genus Pomoxis Rafinesque. 
The Crappies. 
The fishes represented in this genus now known from our 
limits form part of the sub-family Centrarchine. They differ 
from all our other sun fishes in having the dorsal fin scarcely 
longer than the anal. 
Key to the species. 
a. Dorsal spines VI, rarely V; profile strongly sigmoid. ANNULARIS 
awa. Dorsal spines VII, rarely VIII; profile less sigmoid, SPAROIDES 
