34 
two equal joints, the outermost with a crooked finger and 
thumb meeting only at their tips. 
Paipi \onger than the rostrum, composed of nine joints 
inserted under the mandibles, the third joint very long. 
Feet eight; coe with three joints, the middle one long- 
est; thighs one-jointed ; tiie two-jointed, the first joint 
shortest; ¢ars? spiny beneath, two-jointed, the first arti- 
culation minute ; ails double, unequal. : 
The organs on which the female carries her eggs are 
placed behind the rostrum, nearly beneath the first pair of 
feet*. 
This interesting and curious genus is nearly allied to 
Nymphum, of which I shall give some account in the next 
Number. 
‘DA B.. DLE: 
AMMOTHEA CAROLINENSIS. 
A. corpore toto brunneo- o-testacco ; dorso tuberculis 
tribus trigonis. . 
Habitat in Caroline Australis mart. 
CAROLINA AMMOTHEA. 
Body entirely brown-testaceous ; back with three trian- 
gular tubercles. >. 
For this singular species, which constitutes a new genus, 
} am indebted to Mr. Latham of Compton- street, who. re- 
ceived two specimens from South Carolina, which were 
caught on an anchor that had been recently drawn from the 
bottom of the sea. 
* One of these organs is represented in a detached state in the annexed 
Mare. 
