80 
GENUS PAL2EM0N : Carapace elongated into a serrated 
snout of considerable length; inner antenna; with three 
processes having numerous articulations. Second pair of 
legs stouter than the anterior, and two-fingered like them. 
PRAWN. P. Serratus. M. Edwards’ Crust., vol, 2, p. 389. 
Leach s Malao., pi. 43. Astacus S. Pennant, pi. 16. fig. 28. 
A common species, found of largest size on the rockiest 
coasts, where it seeks the shelter of large stones and places 
overhung with weeds. It prefers the stillest waters, advance- 
ing and retiring with the tide; in Summer preferring water 
that has a distinct feeling of warmth, and in winter going into 
what is at that season less cold than at the margin, but never 
far from land. 
It is sought after as a delicacy, the usual method of taking 
it being with a bag net suspended from a circular ring of iron 
at the end of a pole. Another method is by small pots, re- 
sembling those employed for the Crab and Lobster. The 
Prawn is a tempting bait for most sea fishes. 
SHRIMP PRAWN. P. S (juilla. M. Edwards’ Crust., 
vol. 2, p. 390. Leach’s Malac., pi. 43. 
Scarce, and generally confounded with the last named species. 
The FAMILY of STOMAPODS, 
Is formed of stalk- eyed Crustaceans that are destitute of bran - 
chioe in interior cavities. It is divided into 
CAR! DIOIDANS, haviug legs formed alike, and fitted for 
swimming; the carapace reflexed against the base of the 
legs, aud again nearly covering the thorax, abdomen much 
developed. 
SINGLE CUIRASSIANS ; the legs various, the first large 
and cheliform, the three next short and snbeheliform, the 
three last slender and natatory. Most of the thoracic rings 
distinct, abdomen well developed. 
CARIDIOIDANS. 
OPOSSUM SHRIMPS. 
GENUS MY SIS: The form slender and lengthened; scale 
slender, on a long peduncle. Thoracic legs slender and 
bifid, each anterior one shortest, abdominal paddles minute 
and simple. 
OPOSSUM SHRIMP. M. Spinulosus. M. Edwards’ Crust., 
vol. 2, p. 457. 
Common in summer, when it draws near the shallows from 
deeper water : it also enters rivers in multitudes, forming a 
long line of migration, at which season it is much devoured 
by the Trout. Its English name is taken from its habit of 
carrying the eggs in a receptacle under the thorax until they 
are hatched as in the analogous genus of Quadrupeds, the 
Opossum tribe. 
