74 
PACIFIC SCIENCE, VoL XIX, January 1965 
clamps along posterior border of body, with a 
long anchor-bearing caudal appendage. Intesti- 
nal limbs united together at posterior end of 
body proper. 
Allopseudodiclidophora n. g. 
GENERIC DIAGNOSIS: Pseudodiclidophoridae, 
Allopseudodiclidophorinae: Body markedly at- 
tenuated anteriorly. Clamps sessile, 4 on each 
side on posterior margin of body, arranged sym- 
metrically; clamp skeleton similar to that of 
Pseudodiclidophora. Prohaptoral suckers asep- 
tate, unspined. Esophagus very long, simple. 
Intestinal crura united posteriorly. Testes nu- 
merous, in two longitudinal rows in postovarian 
interintestinal field. Cirrus forming sclerotized 
cylinder, opening into genital atrium, latter with 
outer wall of circular muscle fibers and provided 
inside with a sheaf of sclerotized rods surround- 
ing cirrus. Genital pore midventral, far anterior 
to intestinal bifurcation. Ovary inverted U- 
shaped, in midregion of body, with both ends 
directed backwards. Genito-intestinal duct open- 
ing into right intestinal limb. Symmetrical semi- 
nal receptacles connected with both arms of 
vitelline reservoir. Eggs with polar filament. 
Vaginae symmetrical, vaginal ducts united to- 
gether; unpaired median vaginal duct opening 
into vitelline reservoir. Vitellaria co-extensive 
with intestinal branches; vitelline reservoir Y- 
shaped. Gill parasites of marine teleosts. 
TYPE SPECIES: A. opelu n. sp., on Decaplerus 
pinnulatus; Hawaii. 
10. Pseudopisthogyne lepidocybii n. g., n. sp. 
Fig. 10 
habitat: Gill of Lepidocybium flavobrun- 
neum; Hawaii. 
holotype: U. S. Nat. Mus. Helm. Coll., S.Y. 
No. 10. 
DESCRIPTION (based on seven whole mounts) : 
Body elongate, rather slender, gradually taper- 
ing anteriorly, 4.3-13.5 mm in total length in- 
cluding slender, hook-bearing caudal appendage 
which arises from the extreme posterior end of 
the body proper nearer to the small posterior- 
most clamp than to large posteriormost clamp, 
and measures 0.4-1. 4 mm long and 0.07-0.18 
mm wide at the slightly enlarged, truncate tip. 
Of the three pairs of anchors the largest outer 
is 5 1-64/a long from end of short root to height 
of curve of blade, with prominent guard curved 
toward the blade, the middle 18-26/a long, with 
its incurved guard well apart from tip of root; 
the inner 27-31/a long, its guard to which many 
muscle bundles are convergently attached is di- 
rected straight toward the tip of the blade. 
Opisthohaptor asymmetrical, with four pairs of 
clamps, 0.34-0.9 mm long on the right (pore 
side), 0.7-2. 5 mm long on the left; right clamps 
distinctly pedunculate, left ones subsessile; skele- 
ton of right clamp 90-160/a in diameter, sym- 
metrical, or only slightly asymmetrical because 
of different curvature of the lateral sclerites, con- 
sisting of median spring with bifid ends, a pair 
of accessory sclerites, two pairs of unjointed 
lateral arms and a pair of short basal sclerites; 
skeleton of left clamp 150-330/a wide, consisting 
of two pairs of asymmetrical unjointed lateral 
arms, a median spring with bifid ends, a pair of 
accessory sclerites and a pair of basal sclerites; 
capsule of the clamp strongly muscular; proximal 
outer quadrant distinctly larger than proximal 
inner quadrant, bulging out at base, thus causing 
asymmetry of the lateral sclerites; the two lateral 
sclerites of the proximal outer quadrant show- 
ing gentle sigmoid curve in strong contrast with 
the opposite sclerites which are simply arcuate. 
Head blunt-pointed, 0.17-0.28 mm wide at level 
of oral aperture, with a pair of well-developed 
apical organs. Intrabuccal sucker elliptical, mus- 
cular, with a partition at middle, 50-90 X 70- 
140/a. Pharynx subglobular, cellular, 40-80 X 
40-70/a. Esophagus 0.22-0.63 mm long, simple 
except at its diverticulate posterior portion, bi- 
furcating at level of vagina. Intestinal limbs with 
numerous subdivided outer branches, termi- 
nating close to each other at base of caudal 
appendage. 
Testes rounded, 90-170 in number, arranged 
in one layer, occupying whole interintestinal 
field of posterior part of anterior third and 
entire middle third of body. Vas deferens wind- 
ing between two rows of anteriormost testes and 
also in pretesticular interintestinal field where 
there are numerous gland cells surrounding the 
vas deferens. Whether these gland cells are 
prostatic in nature or not is not certain. After 
passing dorsal to the vaginal pore it forms a 
