88 
PACIFIC SCIENCE, Vol XIX, January 1965 
cotyle type, 28-50 on the right, 25-37 on the 
left, making a total of 58-87. Paired prohaptoral 
suckers elliptical, muscular, with several septae, 
72-112 X 37-60/a. Head rounded, truncate at 
apex, with subterminal mouth opening. Pharynx 
globular, 37-58 X 35-50/x, esophagus 0.83-2.0 
mm long, giving off numerous simple or sub- 
divided side branches at right angles, bifurcating 
just in front of vaginal pore, anteriormost 
esophageal branches apparently rosette-shaped; 
intestinal limbs with numerous subdivided 
branches laterally; each may give off posteriorly 
two secondary limbs which are also provided 
with side branches and run backward parallel to 
the main limbs; these limbs are not accompanied 
by the vitellaria posteriorly and may or may not 
reach the posterior end of the opisthohaptor. 
Testes rounded, 70-100 in number, pre-, 
para-, and postovarian, commencing a certain 
distance (0.5 mm in the type 4.45 mm long) 
behind vaginal pore, and terminating at level of 
anteriormost clamp. Distal portion of vas def- 
erens running ventral to esophagus, strongly 
winding and provided with thick wall of cir- 
cular muscles. Cirrus pouch fusiform, 90-160 X 
30-45 /x, provided outside with well-developed 
longitudinal muscles, oblique to body axis on 
right side of esophagus; cirrus unarmed, open- 
ing into relatively wide genital atrium which 
in turn opens ve rurally close to right margin of 
body at a distance of 0.36-0.84 mm from head 
end. In the region of the genital pore the body 
bulges out a little as shown in the figure. 
Ovary with irregular outline, confined to 
middle third of body on right side of median 
line medial to right intestinal limb, commenc- 
ing with a compact mass 0.18-0.2 mm wide and 
ascending for a distance of 0.86-1.4 mm and 
then descending alongside ascending portion, 
giving off germiduct just in front of compact 
proximal mass. The germiduct originating at the 
posterior distal end of the ovary soon gives off 
the genito-intestinal duct and then unites with 
the stem of the vitelline reservoir; the genito- 
intestinal duct crosses the distal end of the ovary 
ventrally and empties into the right intestinal 
limb. Shell gland confined to space between 
ovary and testes. Uterus midventral, finally run- 
ning alongside cirrus pouch and opening into 
genital atrium near its margin. Eggs greatly 
elongated, 220-230/x long by 40/x wide, with 
both ends produced into filaments 170—2 50/x 
long. Vagina bulbous, about 0.11 mm in diam- 
eter in the type, opening midventrally just be- 
hind intestinal bifurcation, 0.95-2.4 mm from 
head end; vaginal duct could not be traced back- 
wardly. A pair of narrow symmetrical ducts aris- 
ing from base of vagina, each provided with a 
sphincter at distal end, probably united with 
vitelline duct passing nearby. Vitellaria com- 
mencing on each side at level of intestinal bi- 
furcation, leaving posterior ends of intestinal 
limbs free; vitelline reservoir Y-shaped. 
discussion : The present species differs from 
Cbaukanea madras ensis Ramalingam 1953, from 
Spbyraena acutipinnis in the body lacking the 
haptoral stalk, septate anterior suckers, longer 
esophagus, larger number of testes, and post- 
bifurcal position of- the vagina. Ramalingam 
states that the vagina is lateral on the left side, 
just beneath and parallel to the short unarmed 
cirrus, and .that the vaginal pore is fringed with 
minute teethlike spines. This entirely different 
location of the vagina and the difference in the 
body shape justify the creation of a new genus, 
for which the name Pseudochauhanea Is pro- 
posed with the following diagnosis. 
Pseudochauhanea n. g. 
GENERIC DIAGNOSIS: Gastfocotylidae, Castro- 
cotylinae: Body lanceolate, without stalk for 
opisthohaptor. Opisthohaptor asymmetrical, not 
distinctly set off from body proper, with large 
numbers of damps of Gastrocotyle type; ter- 
minal anchors absent. Paired anterior suckers 
strongly muscular, conspicuously septate; esoph- 
agus long, with side branches; ceca also with 
numerous side branches, continued into opis- 
thohaptor, and terminating separately at or near 
posterior end of latter where they are not ac- 
companied by the vitellaria. Testes numerous, 
pre-, para-, and postovarian, passing beside ovary. 
Vas deferens with thick muscular wall distally; 
cirrus pouch present; cirrus unarmed, may or 
may not protrude into genital atrium; genital 
pore submarginal, in anterior region of esoph- 
agus. Ovary in midregion of body, to right of 
median line, turning back on itself and giving 
germiduct at its backwardly directed end. Vagina 
unarmed, opening midventrally, postbifurcal, 
with paired narrow ducts, each of which prob- 
ably unites with the vitelline duct passing 
nearby. Eggs elongate, fi lamented at both ends. 
