NATURAL HISTORY. 
CYCLOPS. Quvuapricornis. (Latr.) In fresh 
and stagnant waters. 
All the above genera were included by Linneus 
in his genus MONOCULUS. 
BRANCHIOPODA. Staenatis. (Latr.) Lin. 
Trans. 1. p. 103, t. 9. (CANCER STAGNALIS.) 
This may oceasionally be met with in shallow 
pools of rain water—the body is transparent. 
The animals of this division or sub-class have been 
as yet but little attended to and their arrangement 
is consequently very unsettled and imperfect— 
some are parasitic on other marine or aquatic 
animals, and a few are said to undergo trans- 
formation during their growth. 
B. MALACOSTRACA. 
Mundibles palpigerous—Legs simple, 
1. PODOPTHALMZ. 
This division includes the animals commonly 
known as Crabs, Lobsters, Shrimps, &c., they all 
have the power of reproducing their claws when 
lest. 
CORYSTES. CasstvELAuNus. Leacn MAtae 
COSTRACA PoDOPHTHALMATA BRITANNIA, 
t. 1. Latr. (Corysres Denratus.) Penn. 
Brit. Zool. 4. 6. t. 7 Male and Female. 
(Cancer Denratus.) Occasionally thrown 
up on the beaches, 
