94 
PACIFIC SCIENCE, Vol. XIX, January 1965 
two rows of clamps, with two pairs of anchors 
of different size and shape at one end. Clamp 
skeleton quite different from those of Micro- 
cotyle, Gastrocotyle, Pyragraphorus, Allopyra- 
graphorus, etc. Head with apical organ at front 
end. Oral suckers strongly muscular, pharynx 
cellular except for anterior end. Esophagus with- 
out diverticles; intestinal limbs simple at be- 
ginning and posterior portion intruding into 
opisthohaptor, branched elsewhere. Testes not 
very numerous. Cirrus consisting of inverted 
cone of lamellar muscles inclosed in a horseshoe- 
shaped pad of lamellar muscles and a crown of 
stavelike spines set on base of cone; common 
genital pore ventral to esophagus. Ovary bent 
back on itself in midregion of body, with its 
distal end directed backward. Genito-intestinal 
duct present. Eggs elongated oval, with filament 
at each pole. Vagina opening dorsally to right 
of median line shortly behind intestinal bifur- 
cation; vaginal duct connected with paired 
arms of vitelline reservoir by means of inverted 
V-shaped duct. Vitellaria largely co-extensive 
with intestine and its branches; vitelline reser- 
voir Y-shaped, largely overlapping ovary. Gill 
parasites of marine teleosts. 
type species: A. onaga n. sp., on Etelis car- 
bunculus; Hawaii. 
ALLOMICROCOTYLIDAE n. fam. 
family DIAGNOSIS: Microcotyloidea: Opis- 
thohaptor asymmetrical; clamp without apical 
accessory sclerites; short prong of median spring 
enlarged at tip and articulated on each side with 
basal sclerites and also with another dorsal me- 
dian piece which is stout, hollow and curved 
ventrad. Anchor-bearing terminal lappet and 
prehaptoral hooks absent. Testes postovarian; 
cirrus pouch absent; cirrus armed. Genital atrium 
unarmed. Vaginal pore nearly middorsal; post- 
bifurcal. Parasites of marine fishes. 
TYPE GENUS: Allomicrocotyla n. g. 
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