474 
PACIFIC SCIENCE, Vol. XIX, October 1965 
long. Ceca simple, may reach posterior extrem- 
ity, although more or less markedly atrophied 
posteriorly. Acetabulum prominent, 0.11-0.18 
X 0.13-0.19 mm, situated 0.25-0.8 mm behind 
intestinal bifurcation. 
Testes two, juxtaposed, tubular, each com- 
mencing as a very narrow tubule 6-30 mm 
behind genital junction, more or less swollen 
at anterior end which lies at a distance of 4-8 
mm from the head end, both usually terminat- 
ing at slightly different levels. Vas deferens run- 
ning alongside ascending distal portion of 
uterus. Genital pore median, ventral to oral 
sucker. 
Ovary tubular, strongly winding in median 
field, unbranched, originating between two tes- 
tes at a distance of 4.5-20 mm from head end, 
0.6-8. 5 mm behind anterior ends of testes. 
Germiduct short; no seminal receptacle. Genital 
junction 14-60 mm from head end, 56-305 
mm from posterior extremity, dividing body in 
ratio of 1:4-6 (1:1.2 in paratype 132 mm 
long). Uterine duct surrounded by shell gland 
cells, descending alongside vitelline gland, turn- 
ing back on itself at posterior end of body or 
some distance (up to 3.4 mm) away from it, 
to be continued into final ascending uterus. The 
latter portion of uterus swollen at irregular in- 
tervals, differentiated into muscular metraterm 
some distance anterior to genital junction. Eggs 
bean-shaped, 20-24 X 8-10 /x in life. Vitel- 
larium tubular, winding irregularly, usually 
reaching to posterior extremity, originating 3.0 
mm anterior to posterior extremity in one 
paratype in which the uterus also turns for- 
ward far away from the posterior extremity. 
In this specimen the posteriormost portion of 
the body looks like a slender tail. Excretory 
vesicle winding, bifurcating immediately in 
front of intestinal bifurcation; arms winding. 
DISCUSSION : This genus is distinguished 
from the related genera according to the char- 
acters presented in Table 2. 
Allonemato bothrium n. gen. 
GENERIC DIAGNOSIS: Didymozoidae, Nema- 
tobothriinae. Body slender, very long, swollen 
at irregular intervals in gravid specimens. Oral 
sucker strongly muscular; pharynx practically 
absent, though a funnel-shaped swelling is pres- 
ent at the anterior end of the esophagus. 
Esophagus and beginning of ceca surrounded 
by glandular cells. Ceca simple, may reach poste- 
rior extremity, more or less atrophied posteri- 
orly. Acetabulum present. Testes paired, orig- 
inating posterior to genital junction, terminat- 
ing a short distance anterior to ovary. Ovary 
single, tubular, unbranched, intertesticular. No 
seminal receptacle. Uterus first descending, 
looping at posterior extremity alone. Vitel- 
larium tubular, unbranched, extending between 
genital junction and posterior extremity. Ex- 
cretory vesicle with terminal pore, bifurcating 
anteriorly into short arms. Encysted in pairs in 
fins or underside of operculum of marine 
teleosts. 
TYPE SPECIES: A. epinepheli n. sp., in Epi- 
nephelus quernus; Hawaii. 
10. A llomet anemato bothrioides lepidocybii 
n. gen., n. sp. 
Fig. 9 A-D 
HABITAT: Free in the periaortal connective 
tissue of Lepidocybium flavobrunneum; Hawaii. 
holotype: U. S. Nat. Mus. Helm. Coll, S.Y. 
No. 28. 
DESCRIPTION (based on two whole and one 
mutilated specimens ) : Body filiform, gradually 
tapered anteriorly to a blunt point, 38 mm in 
entire length, with maximum width of 0.7 mm 
in the somewhat flattened, intact, type specimen, 
one of the entire paratypes being 30 mm long. 
Oral sucker rounded, ventroterminal, rather cel- 
lular, 23-25 /x in diameter, followed directly by 
a muscular pharynx 18-23 ^ long by 23-30 /x 
wide. Esophagus narrow, strongly winding, 1.16 
mm long lineally in the type, but 2.6 mm long 
in the mutilated paratype. Ceca narrow, wind- 
ing, rather convoluted and running in median 
field for greater posterior portion, but tending 
to atrophy posteriorly, terminating about 12 
mm from posterior extremity in the type. No 
acetabulum. 
Testes double, tubular, winding; in the type 
the anterior testis originates about 5 mm be- 
hind the genital junction and terminates 6.3 
mm from the anterior extremity, whereas the 
posterior testis arises close to the posterior ex- 
