56 
PACIFIC SCIENCE, Yol. XIX, January 1965 
VII. AXINIDAE Unnithan, 1957 
Allopseudaxininae Yamaguti, 1963 
14. Allop seudaxinoides euthynni n. g., 
n. sp. 
Monaxininae Unnithan, 1957 
15. Allomonaxine carangoides n. g., n. 
sp. 
VIII. GASTROCOTYLIDAE Price, 1943 
Gastrocotylinae Sproston, 1946 
16. Pseudo chauhanea sphyraenae n. g., 
n. sp. 
Areotestiinae n. subf. 
17. Areotestis sibi n. g., n. sp. 
IX. ALLOMICROCOTYLIDAE n. fam. 
18. Allomicrocotyla onaga n. g., n. sp. 
1. Dioncopseudobenedenia kola n. g., n. sp. 
Fig. 1 
HABITAT: Gill of Naso unicornis ; Hawaii. 
HOLOTYPE: U. S. Nat. Mus. Helm. Coll., S.Y. 
No. 1. 
DESCRIPTION (based on 18 whole mounts): 
Body flattened, oval or more elongate, 2. 1-4.2 
mm in length, with maximum width of 0.6-2. 0 
mm in middle third; cuticle beset with conical 
papillae. Opisthohaptor circular 0.5- 1.0 mm in 
diameter, aseptate, fringed with scalloped mem- 
brane up to 25/a wide, provided with only one 
pair of slender, rather acicular spines 50-75/a 
long behind the center, where the haptor is at- 
tached dorsally to the body proper by a short 
muscular stalk; spines usually straight, appar- 
ently no more functional. Prohaptor suctorial, 
0.16-0.3 mm in longer diameter, with strongly 
muscular wall, the anterolateral part of which 
contains granular, apparently glandular tissue; 
the two suckers are connected by a flat apical 
border of the body proper. Two pairs of compact 
eye-spots anterodorsal to pharynx. Mouth fol- 
lowed by a distinct prepharynx which consists of 
circular muscle lamellae and provided inside 
with more or less prominent cuticular papillae, 
measuring 0.1-0.24 X 0.14-0.3 mm. Pharynx 
subglobular, 0.14-0.34 X 0.16-0.38 mm, consist- 
ing mainly of radial muscle fibers enclosed in 
smooth capsule of circular muscle fibers. In- 
testinal limbs with numerous subdivided outer 
branches and fewer short inner branches, not 
confluent posteriorly; outer branches with longi- 
tudinal anastomosis parallel to principal limb. 
Testes oval, 0.2-0. 5 X 0.15-0.38 mm, directly 
juxtaposed, just pre-equatorial. Paired Goto’s 
gland irregular in shape and size, containing a 
variable number of rounded nuclei and fine 
granules; the nuclei are massed together and 
pressed to one side of the gland or to the pos- 
terior end, sometimes showing signs of degen- 
eration; the granules, when liquefied, occupy 
some or greater part of the cell. In the type the 
vas deferens contains a small oval degenerating 
nucleus in addition to spermatozoa at its very 
beginning among the ovary and testes; this ob- 
viously originated from the Goto s gland. After 
convolutions in front of the vitelline reservoir 
the vas deferens crosses over the uterus dorsally 
and penetrates the cirrus pouch near Its pos- 
terior end; ejaculatory duct well provided with 
circular muscles, joining with prostatic duct at 
base of cirrus. Cirrus pouch claviform, 0.36-0.95 
X 0.08-0.22 mm, with thick wall of circular 
muscle fibers, containing prostatic reservoir 
0.13-0.33 mm long by 0.05-0.28 mm wide at 
base, occupied for greater part by muscular ejac- 
ABBRE VI ATION S USED IN FIGURES 
Ac 
Accompanying 
GT 
Gonotyl 
cell 
HG 
Head gland 
AGO 
Accessory copu- 
HO 
Head organ 
latory organ 
M 
Mouth 
ACS 
Accessory copu- 
O 
Ovary 
latory sclerite 
oc 
Eye spot 
AG 
Apical gland 
OS 
Oral sucker 
AO' 
Apical organ 
p 
Pharynx 
AR 
Atrial ring 
PC 
Prostatic cell 
AS 
Atrial spine 
PD 
Prostatic duct 
AVD 
Anterior vitelline 
PL 
Preoral lobe 
duct 
PM 
Pars muscuiosa 
AVGD 
Accessory vaginal 
PP 
Pars prostatica 
duct 
PR 
Prostatic reservoir 
BC 
Bulbus cirri 
RS 
Receptaculum 
BE 
Bulbus ejacula- 
seminis 
torius 
S 
Sucker 
C 
Cirrus 
SP 
Sphincter 
CP 
Cirrus pouch 
sv 
Seminal vesicle 
DE 
Ductus ejacula- 
T 
Testis 
torius 
V 
Vagina 
E 
Egg 
VC 
Vitelline 
ES 
Esophagus 
commissure 
EV 
Excretory vesicle 
VD 
Vas deferens 
GA 
Genital atrium 
VP 
Vaginal pore 
GI 
Genito-mtestinal 
VR 
Vitelline reservoir 
canal 
VT 
Vitelline gland 
GO 
Goto’s organ or 
VXD 
Vitelline duct 
gland 
* 
Seminoprostatic 
GP 
Genital pore 
reservoir 
