Digenetic Trematodes, I — Yamaguti 
459 
Bunocotylinae Dollfus, 1950 
5. Pseudobunocotyla aw a n. gen., n. sp. 
Quadrifoliovariinae n. subf. 
6. Quadrifoliovarium pritchardi 
n. gen., n. sp. 
IV. Lobatovitelliovariidae n. fam. 
7. Lobatovitelliovarium fusiforme 
n. gen., n. sp. 
V. Didymozoidae Poche, 1907 
Didymozoinae (Ishii, 1935) 
8. Lobatocystis yaito n. gen., n. sp. 
Nematobothriinae Ishii, 1935 
9. Allonematobothrium epinepheli 
n. gen., n. sp. 
10. Allometanematobothrioides 
lepidocybii n. gen, n. sp. 
11. Metanematobothrioides opakapaka 
n. gen., n. sp. 
12. N emato b othrioides kalikali 
n. gen., n. sp. 
13. N eonemato b othrium kawakawa 
n. gen., n. sp. 
1. Bulbocirrus aulostomi n. gen., n. sp. 
Fig. 1 A-C 
HABITAT: Small intestine of Aulostomus c hi- 
fi en sis (local name "nunu”) ; Hawaii. 
HOLOTYPE: U. S. Nat. Mus. Helm. Coll., S.Y. 
No. 19. 
DESCRIPTION (based on eight whole mounts): 
Body long, slender, tapering anteriorly, 3.7- 
12.5 mm long, with maximum width of 0.2- 
0.55 mm in posterior third of body. Cuticle be- 
set with minute spines, densely on greater an- 
terior part of body, but sparsely on posterior 
third. Oral sucker ventroterminal, 30-80 X 40- 
90 /x; prepharynx slender, 0.2-0.7 mm long; 
pharynx cylindrical, narrow, muscular, 50-120 
X 30-70 fx; esophagus slender, 0. 1-0.3 mm 
long, bifurcating at a distance of 0.16-0.83 mm 
from acetabulum; left cecum greatly dilated at 
the beginning at level of acetabulum, and right 
cecum also dilated a little further behind in the 
type. At the posterior tip of the body is a shal- 
low cloaca, into which the two ceca open sep- 
arately, one on each side of the excretory vesicle. 
Acetabulum 0.08-0.15 X 0.08-0.17 mm, situ- 
ated posterior to middle of anterior third of 
body. 
Testes ellipsoidal, 0. 3-0.8 X 0.19-0.43 mm, 
directly tandem in caudal third of body. Seminal 
vesicle tubular, very long, more or less swollen 
at proximal end, winding in median field be- 
tween anterior end of vitellaria and cirrus pouch 
with its terminal portion differentiated into 
muscular ejaculatory duct enclosed in cirrus 
pouch. Cirrus massive, 0.1-0.45 X 0.05-0.2 
Abbreviations used in Figures 
A 
acetabulum 
M 
metraterm 
AN 
anus 
O 
ovary 
C 
cirrus 
OC 
eye spot 
CL 
cloaca 
OS 
oral sucker 
CP 
cirrus pouch 
P 
pharynx 
D 
vas deferens 
PC 
prostatic cell 
DE 
ductus ejaculatorius 
PL 
preoral lobe 
DH 
ductus hermaphroditicus 
PP 
pars prostatica 
E 
esophagus 
RS 
receptaculum seminis 
EA 
excretory arm 
SP 
sphincter 
EP 
excretory pore 
T 
testis 
EV 
excretory vesicle 
U 
uterus 
GC 
gland cell 
UD 
uterine duct 
GP 
genital pore 
VR 
vitelline reservoir 
HP 
hermaphroditic pouch 
VS 
vesicula seminalis 
I 
intestine 
VSE 
vesicula seminalis externa 
LC 
Laurer’s canal 
VT 
vitellarium 
