74 G. A. MacCarrum, 
be described later, and it is on account of the close resemblance of 
at least six of these forms that we have hesitated to publish their 
description until it could be more definitely ascertained whether they 
really belong to one species or to several. M. angelichthys differed 
from all of these six worms in the possession of a globular ovary 
NIS 
LTR) 
Bon det 
PRCy 
) an ELIrY: h 
P w n0a06naı 5): = 
gasjadoe en 
2 5 
Bi dc 
Ta Po 
and was therefore set down 
as a distinct species, 
C Cirrus 
C.d caudal dise 
F.G.P female genital pore 
@G.P genital pore 
i intestine 
M mouth 
M.G.P male genital pore 
M. 5 mouth sucker 
Oes oesophagus 
n O0t ootype 
F > Ova esg 
se Ov ovarium 
se R u ov. Ov.d oviduct 
rF 3 Ph pharynx 
N o 5 
ee = 2 oe S.C caudal dise sucker 
in ® ı. S.G@ shell gland 
E £ ge S.r seminal reservoir 
ER © t Testes 
zaseı I —Fas> T. A Tactile area 
EI %e3 Ut 
5 Eu = uterus 
3 Va vagina 
V.d Vas deferens 
3 Vit vitellaria 
re Yit.d Vitelline duet 
Vit.r Vitelline reservoir 
V. 0 vaginal opening 
Fig. A. 
a Microcotyle centropristes n. SP. 
b Male and female genital pores. 
c Chitinous frame of a caudal sucker. 
d Mouth sucker. 
