of eggs, the loops winding transversely between the ovary and 
ventral sucker. The uterus then passes up dorsal to the ventral 
sucker, makes a few more small loops in front of% and passes by 
a thm vagina into the genital sinus. The latter contains many 
eggs. The eggs are thin-shelled, are a rather broad oval, and 
measure 0-OG mm. in length. The vitellaria are very much 
developed, and composed of many follicles, filling up the anterior 
halt of the space behind the testes ; at about 0-2 mm. behind the 
testes the vitellaria thin out and form two continuous bands up 
the sides of the body to about 0-2 mm. behind the ventral sucker. 
The life history is not known. 
The genus Otodistomum may be thus briefly described :— Lar-e 
rrematodes with strongly muscular and unarmed bodies. Suckers 
well developed. No prepharynx, conspicuous pharynx, very short 
oesophagus, and irregularly sinuous intestinal lobes readme to the 
posterior end of the body. Excretory vesicle Y-shaped, with forks 
reaching to the pharynx. Genital pore by the pharynx. Cirrus 
sac lying in front of the ventral sucker; vesicula seminalis simple- 
large genital sinus. Testes one behind the other, nearly in the 
centre of the body. Ovary in front of foremost testis to the rndit 
Laurers canal present (?); no receptaculum seminis. Vitellaria 
IZZ" » ° 7TT S fOllid0S ' ° CCUI » in e the I"* of that 
pa rf of the body behind the testes, and running up the sides to a 
ho t way behind the ventral sucker. Uterus loops many, reaching 
between the lobes of the intestine from the ovary to In front of 
l^Tl^n f 883 ° f ( O0G mm 
todKtotmm velipm (C « ■*« - ^ 
I mtomum, sp. (Plate III., figs. 6-8.) 
havetl LT^ ^ * deSCripti ° n ° f 8 Trematode which I 
es t il on ' ? 1 ! l7° Yk ° Ut th0r0U ^ h1 ^ but ^ -ter- 
2 "~ ° f 15 hfe h '^ry, which can be almost completely 
a^^tdT- It probably represents • 
Possibly Tm ' 1 f CUlt t0 SUggeSt Where ifc shoilld b e Placed. 
t L that Iftt (Levins), but it 
b 110111 tIiat Trematode in many respects 
^LlXZSTrL 1 La - e deSCribed a CercaHa contained in 
J^ocysts in great abundance in a specimen of Buccinum undaUon 
mZvT° n * 0nhmih ™» Troumtodos,- by the writer. Bept Nortkbd. ( 
Sea risii. f, jr 
