120 G. HERBERT FOWLER. 
EXPLANATION OF PLATE VIII, 
Illustrating Dr. G. Herbert Fowler’s paper on ‘‘ A Remark- 
able Crustacean Parasite.” 
The animal is represented in all the figures in the Cirrhipedian position, 
z. e. with the dorsal surface downwards. 
abd. Abdomen. ov. c. Oral cone. 
ant, Antenna. ov. Ovary. 
gl. Gland of unknown function. ov'. Space filled by ovary in maxi- 
iat. Intestine. mum development. 
int’, Cephalic (median) cecum. pe. Penis. 
int?. Dorsal (median) cecum. st. Stomodeum. 
int?, Hepato-pancreatic (paired) cx- | ¢e. Testis. 
cum. tel. Space filled by testis in maximum 
i—vi (Fig. 3). The six thoracic ap- development. 
pendages. v. d. Vas deferens. 
Fic. 1.—The animal from the ventral surface, lying in the bivalve carapace. 
From the cephalic region project (downwards in the figure) the two antenne, 
behind which lies the grooved oral cone. Two thin filaments behind this 
represent the first pair of thoracic appendages ; between the next four pairs 
of appendages, which are flabelliform, projects forwards the terminally 
bilobed penis, at the base of which are seen two small lobes representing the 
reduced abdomen. 
Fic. 2.—Dorsal view of the carapace, which completely conceals the body 
of the animal. 
Fic. 3.—The animal from the left side, to show the alimentary system, 
nervous system, and appendages; the left half of the carapace, with its 
contents (the ovary, testis, and hepato-pancreatic diverticulum), having been 
removed. While both right and left antenne were visible in this specimen, 
the remaining appendages are those of the left side only. The nervous 
system is represented in black. 
Fic. 4.—Viewed from the left side, to show the reproductive organs. The 
appendages, the carapace, and hepatic diverticulum of the left side are removed, 
leaving the ovary and testis visible. 
Fic. 5.—The animal is supposed to have been transversely divided, and the 
two halves opened. The anterior half is that on the right of the figure. 
Fic. 6.—The antenna. 
Fic. 7.—Diagram of the testis, showing various stages in the spermato- 
genesis. 
