466 
pars prostatica. Eggs oval, 17-23 X 8-13 ^ in 
life. Vitellaria immediately posterior or postero- 
sinistral to ovary, divided into six or seven, 
rarely eight, oval to pyriform, rosette-shaped 
lobes, measuring as a whole 0.75-1.3 mm by 
0.9-1. 9 mm. Excretory vesicle Y-shaped, open- 
ing ventroterminally or actually ventrally at a 
postvitellarian level, depending on the degree 
of pressure applied on the body of the parasite; 
excretory arms united anteriorly dorsal to oral 
sucker. 
DISCUSSION: According to its general anat- 
omy this new genus undoubtedly belongs to the 
family Hemiuridae, but cannot be referred to 
any known subfamilies under this family. I pre- 
fer to propose a new subfamily, Albulatremati- 
nae, placing it near Lecithophyllinae Skrjabin 
and Guschansk., 1954 ( = Hysterolecithinae 
Yamaguti, 1958). 
Albulatrematinae n. subf. 
subfamily DIAGNOSIS: Hemiuridae. Body 
subglobular, or oval to pyriform, without tail. 
Oral sucker and pharynx well developed. Ceca 
not united posteriorly. Acetabulum in anterior 
third of body. Testes nearly symmetrical, pos- 
terolateral to acetabulum. Distal portion of vas 
deferens strongly muscular, convoluted and en- 
closed in apparently muscular capsule. No sem- 
inal vesicle. Pars prostatica strongly muscular, 
surrounded by prostate cells which are sharply 
delimited from surrounding parenchyma by 
muscular capsule, joining metraterm to form 
hermaphroditic duct, which is enclosed in a 
massive muscular pouch, and which may be 
everted out of the genital pore in form of a 
bulbous prolapsus. Genital pore ventral to phar- 
ynx or esophagus. Ovary lobed, submedian, in 
middle third of body. Vitellaria rosette-shaped, 
postovarian. Uterine coils occupying all avail- 
able space of hindbody; eggs oval, small. Ex- 
cretory vesicle Y-shaped, with ventroterminal or 
ventral opening; arms united anteriorly. 
Albulatrema n. gen. 
generic DIAGNOSIS: Albulatrematinae, with 
characters of subfamily. Parasitic in swimblad- 
der of marine or brackish water fishes. 
PACIFIC SCIENCE, Vol. XIX, October 1965 
TYPE SPECIES: A. ovale n. sp., in Albula vul- \ 
pes; Hawaii. 
5. Pseudo buno cotyla awa n. gen., n. sp. 
Fig. 5 
HABITAT: Stomach of Chanos chanos (local 
name "awa”); Hawaii. 
HOLOTYPE: U. S. Nat. Mus. Helm. Coll., S.Y. 
No. 23. 
DESCRIPTION (based on 10 whole mounts): 
Body cylindrical, without tail, 0.8-1.7 mm long, 
0.14-0.35 mm wide at postacetabular ridge, 
which encircles the body. On each side this an- 
nular ridge, well provided with longitudinal 
subcuticular muscle bundles, may be a more or 
less prominent, blunt-pointed cone directed 
posterolaterad. Around the oral sucker is a col- 
lar-like ridge which, however, may be straight- 
ened out when the oral sucker is protruded, or 
shifted forward as a ring when the oral sucker 
is retracted. Oral sucker bowl-shaped, terminal, 
70-140 X 70-120 jul , directly followed by a 
small pharynx 23-50 X 35-60 /x; esophagus 
short, ceca widened anteriorly, terminating 
blindly near posterior extremity. Acetabulum 
large, prominent, 0.19-0.37 X 0.19-0.35 mm, 
situated at junction of anterior with middle 
third of body. 
Testes subglobular to oval, 30-100 X 32- 
110 /x, postacetabular, slightly obliquely tandem 
in middle third of body, may or may not be 
separated by uterine coils. Vesicula seminalis 
tubular, sigmoid, 25-70 /x wide, overlapping 
anterodextral margin of acetabulum, with its 
tapering anterior end opening into pars pros- 
tatica. Pars prostatica rounded, 40-70 /x in di- 
ameter, lined with large vesicular epithelia and 
surrounded by large prostate cells which are 
delimited sharply from the surrounding paren- 
chyma. At the distal end of the pars prostatica 
originates the wide eversible hermaphroditic 
duct which is lined with transversely wrinkled 
cuticle and enclosed in a muscular hermaphro- 
ditic pouch 79 /x in diameter in the type. Geni- 
tal pore wide, median, opening immediately 
behind intestinal bifurcation. 
Ovary subglobular to oval, 42-70 X 50- 
100 fx, situated ventrally at anterior end of 
middle third of body. Receptaculum seminis 
large, 60-120 /x in greater transverse diameter, 
anterodorsal to ovary. Laurer’s canal? Vitellaria 
