INTEIJXAL AXATO.MY OF S(^UILLA. 
429 
Reference Letters of Figures (Plate and Text). 
A. 1. Antennula. A. 2. Anteuna. Bl. Bladder. B. S. Blood-space 
(hsBmocoele). C. Carapace. C. 1). Duct-cells. Ce. A. Cephalic aorta. 
Cli. A. Chitinous armature of stomach. Conn. Connective-tissue strands. 
C. P. Col. Connections between columnar cells and “plugs” in cuticle. 
C. Sir. Striations in cytoplasm of kidney-cells. Cut. Cuticle. D. Mx. Gl. 
Duct of maxillary gland. Ds. Dorsal surface of gland. I). Sq. Ep. 
Double layer of squamous epithelium. E. Eye. End. S. End-sac. End. 
S. C. End-sac cells. Ep. Epipodite. Ep. 2. Epipodite of second thoracic 
appendage. Ex. Scale-like exopodite of antenna. Exc. Excretion 
material. F. C. Free carapace. Gast. C. Gastric cells. G. C. Goblet- 
cells. G. D. Lateral diverticulum of duct. Gl. Glands (“driisenzellen”). 
Gr. Groove on side of gland lodging body muscle. Grn .Granules. H.M. 
Haemocoele. Ht. Heart. Hyv- Hypodermis. I. C. D. Invagination of 
duct-cells. I. M. Invagination of kidney wall. I. P. Invagination of 
partition wall separating end-sac and kidney. I. Sq. Ep. Inner layer of 
squamous epithelinm. J. Junction of gastric and hepatic cells. L. Pyloric 
digestive gland (“liver”). L. C. “Liver” cells. L.D. “Liver” diverti- 
culum. L. Luni. “Liver” lumen. L. 0. “Liver” opening into stomach. 
Bum. Lumen — excretory. L. W. L. S. Apposition of “liver” and pyloric 
stomach on left side. M. C. Kidney-cells. M. Mx. Gl. Kidney portion 
of gland. Mx. Maxilla. Mx. Gl. Maxillary gland. Mxl. Maxillula. 
Mus. Muscles. Mas. Lon. Longitudinal muscles. Mus. Tr. Transverse 
muscles. Nc. Nerve cord. Op. Opening of maxillary gland on papilla. 
0. Sq. P. Outer layer of squamous epithelium. P. C. Protoplasmic 
processes from end-sac cells traversing blood-space. P. Col. Mass of 
columnar epithelium at opening of maxillary gland-duct. P. S. Pyloric 
portion of stomach. B. Rostrum. S. L. C. Small special “liver” 
cells (resembling oxyntic cells). Sir. B. Striated border of kidney-cells. 
Sq).E 2 ). Squamous epithelium. Th. I, Th. 2, Tli. 3 . . . Th. 7. Thoracic 
appendages. TJ. Th. G. United ganglia supplying the mandil)les and 
the first five thoracic segments and bearing the circum-cesophageal 
connectives anteriorly. V. Vacuole. W.Bl. Wall of bladder. 
