No. 404.] MWORTH-AMERICAN INVERTEBRATES. 661 
ó, Testes about fifty-five in number, in front of which is ovary ; length 
of sucker-bearing region about seven-elevenths that of body, 
with about 120 pairs of suckers ; 7 mm. long, 2 mm. wide : on 
gills of weakfish (Newport) . M. longicauda Goto (Fig. 39) 
GENUS GYRODACTYLUS. 
Body elongate, elliptical, mouth surrounded by a row of spines ; posterior 
disk round; the large central hooks have each double tubercles on its base ; 
1 mm. long, .2 mm. wide : on Cottus scorpius 
G. grenlandicus Lev. (Fig. 43) 
GENUS PLECTANOCOTYLE. 
Body elliptical, broad ; mouth terminal ; no median sae: ponent: 
or hooks ; 4 mm. long, 2 mm. wide : on gills of Rocus america 
P. elliptica owe (Fig. 30) 
SELECTED BIBLIOGRAPHY. 
'94 BRANDIS, G.  Fridericianella ovicola, ein neuer monogenetischer 
Trematod. AA. d. ANaturforschenden Ges. zu Halle. Bd. xx, pp. 
303-310, Taf. XIX. 
'92,'93 Braun, M. Plathelminthes : I. Trematodes. Bronn’s A/assen 
u. Ordnungen d. Thierreichs. Bd. iv, pp. 306-924, Taf. I-XXXIV. 
(A complete bibliographical list will be aus "T 
'96 — —. Hamburger Magalhaensische Sammelre 
'95 CERFONTAINE, P. Contribution à l'étude des WAREN Archives 
de Biologie. T. xiv, pp. 497-560, Pls. XXII-XXV. 
'97 — —. Le genre merizocotyle (Cerf.) Archives de Biologie. T. xv, 
PP- 329-366, Pls. XIII, XIV. 
'97 — .. Contribution à l'étude des octocotylidés. Archives de Biologie. 
T. xv, pp. 301-328, Pl. XII. 
99 —_. Contribution à l'étude des octocotylidés. 4 rchives de Biologie. 
T. xvi, pp. 345-478, Pls. XVIII-XXI. 
'94 Goro, S. Studies on the Ectoparasitic Trematodes of Japan. Journ. 
Sci. Coll., Imp. Univ. Vol. viii, Pt. i, pp. 17273: Pls. I-XXVII. 
. Notes on Some Exotic Species of Ectoparasitic Trematodes. 
Journ. Sci. Coll, Imp. Univ. Vol. xii, Pt. iv, pp. 263-295, Pls. 
X-XXI. 
'88 Lemy, J. Entozoa of the Terrapin. Proc. Acad. Nat. Sci. Phila- 
delphia, pp. 126, 127. 
