218 
CLASS CRUSTACEA. 
strong and very arched claw. The last eight are not spiny. 
The eyes are always apart, and convex. They form their 
genera in the method of Dr. Leach, but may be united in a 
single subgenus, under the common denomination of one of 
them, that of 
Canolira, Leach. ( Anilocra , Olencira, ejusd.) 
Olencira have the laminae of their fins narrow, and armed 
with prickles. In anilocra the external lamina of these fms 
is longer than the internal. The inverse of this is the case 
with canolira; besides the eyes are but little granulated, 
while they are very sensibly so in the preceding. 
In the three following subgenera the second, third, and 
fourth feet only are terminated by a claw strongly curved, 
and the last eight are spiny. The eyes are usually but little 
convex, large, and converge anteriorly. 
-Lg A, Leach, 
Have the first two articulations of their upper antennae very 
broad and compressed, while in the two subgenera which suc- 
ceed, these articulations are almost cylindrical. 
Hocinela, Leach , 
Differ from iEga, as we have just said, in the form of the 
first two articulations of their upper antennae, and approach 
them in their large eyes, which are approximated ante- 
riorly. 
Conilira, Leach, 
Resemble rocinela in their antenna?, but the eyes are small, 
apart, and the edges of the segments are almost straight, and 
not in the form of scythes, and prominent. 
The last subgenus, among those of this section whose an- 
tenna? are on two lines, whose tail is of six segments, and 
