Sudler. — Peuilia. 
EXPLANATION OF PLATES. 
Abbreviations used. 
Ant. 
Anterior. 
Ant. 1. 
1st antenna. 
Ant. 2. 
2cL antenna. 
B. C. 
Blood corpuscle. 
Bl. 
Blastopore. 
Br. 
Supra-esophageal ganglion. 
Br. Ch. 
Brood-chamber. 
C. 
Supra-esophageal commissure. 
Cer. Gl. 
Cervical gland. 
Ect. 
Ectoderm. 
End. 
Endopodite. 
Ent. 
Entoderm. 
Ey. 
Eye. 
Ex. 
Exopodite. 
G. 
Fold between the two rudiments of the nervous system. 
Ht. 
Heart. 
Int. 
Intestine. 
L. 
Upper lip. 
Ms. 
Mesoderm. 
Mx. 1. 
1st Maxilla. 
Mx. 2. 
2d Maxilla. 
Mx. r. 
Maxillary region. 
Post. 
Posterior. 
Sh. 
Shell. 
Sh. Gl. 
Shell-gland. 
Th. Seg. 
Thoracic segments. 
1, 2 , 3, 4, 5, and 6. 
1st, 2d, 3d, 4th, 5th, and 6tli thoracic segments. 
