6 Records of the Indian Museum. [Ver 2xalr: 
Sub-family AMPHICOTYLINAE, Liihe, roto. 
Scolex unarmed. Mouth of cirrus and vagina marginal, 
irregularly alternate, with a more or less strongly pronounced 
partiality for being unilateral. The deferens strongly coiled. 
Mouth of uterus median; aperture of uterus large. In the in- 
testines of fishes. In fresh water there are two genera. 
CHARACTERS OF THE GENERA. 
(1) Yolk-gland follicles numerous, irregularly formed, in 
loose coils, and situated, at least partly, between the 
muscle bundles _... .. Abothrium. 
(2) Yolk-gland follicles in small numbers, on each side, 
pressed together very closely, on the outer edge of the 
nerve strands, between the main longitudinal nerves 
and the muscles ... a sae ... Bathybothrium. 
Abothrium (Van Ben.), 1871. 
Scolex unarmed, not very long, with two strong (but not 
specially deep) suckers. Segmentation of the posterior part of 
the strobila is often indistinct on account of the superficial wrinkling 
of the skin. The ripe segments are considerably wider than long. 
Nerve strands lateral, dorsal to the cirrus sac and vagina. 
Vesicula seminis lies exclusively between the two nerve strands, 
in the two lateral fields. Yolk-glands irregular in shape, in two 
broad lateral fields, situated partly between the bundles of the 
longitudinal muscles. The yolk-glands of each proglottid do not 
appear to be distinctly separated. Ovary somewhat bean or 
kidney-shaped, median, and situated, along with the aperture of 
the uterus, ventrally. Shell-gland dorsal to ovary. Aperture of 
uterus, in mature proglottides, is a uniform sac, almost filling the 
whole of the nerve areas. 
The uterine apertures appear as a more or less distinctly 
marked median, longitudinal, furrow, running the length of the 
proglottides. There are three species. 
CHARACTERS OF THE SPECIES. 
(1) Yolk-glands partly internal to the longitudinal muscles. 
Parasitic in Gadoid fishes ae Se ... A. rugosum. 
(2) Yolk-glands only between the longitudinal muscles. 
Parasitic in Salmonidae Petes es ... A. cvassum. 
(3) Yolk-glands partly external to the longitudinal muscles. 
Parasitic in Clupea finta (Cuvier) ne .. A. fragile 
(After Ltihe) 
Abothrium crassum (Bloch, 1779) Liihe, 1gro. 
ZEV £438 Pyloric caeca of Sebago Lake, H. B. Ward. 
Salmo sebago. Maine, U.S.A. 
One specimen named and presented by Professor H. B. Ward 
of the University of Illinois. 
Literature:—Ltihe, rgro. 
