JOURNAL OF MICROSCOPICAL SCIENCE. 
DESCRIPTION OF PLATE II, 
Jilustrating Dr. Macalister’s paper on Ascaris (Atractis) 
dactyluris. 
].—Male. 
a, Tuberculated mouth. 
6. Stomach. 
c. Cecal glandular apparatus. 
d. Testicular tube. 
e. Vesicule seminales, 
J. Intestine. 
g. Vas deferens. 
A. Spicula, large and small. 
i, Glandular apparatus around the dilated lower end of the intestine. 
2.—¥emale. 
a. Mouth, with exserted proboscis. 
6. Commencement of ovarian tube. 
“ec. Lateral line. 
d. Cardiac constriction of stomach and tooth-like processes ? 
e. Pyloric valvular constriction. 
J. Intestinal dilatation. 
. Secreting cceca, perhaps renal. 
. Cornu of ccecun. 
. Ducts of cceca around rectum. 
Anus. 
. Ovarian tube, containing perfect ova. 
. Opening of ovarian tube. 
. Cecal glandular apparatus. 
3.—Head of the alate variety of 4. dactyluris. 
4.—Tail of female. 
a. Glandular ceca, renal ? 
b. Ducts. 
c. Tubercles on the curved cauda. 
5.—Fine prolonged tail, found in immature females. 
6.—Termination of oviduct, and ovarian orifice. 
7, 8.—Secreting cceca of males and females. 
9, 10, 11.—Ova with yolk in process of segmentation. 
12, 13, 14.—Ova further advanced, eee the development of the in- 
testinal canal. 
S VS. a. NAS 
