No. 404.] MWORTH-AMERICAN INVERTEBRATES. 657 
| 
42 
(A6 
The measurements 
The line to the left of the figures indicates the actual size of the animal. 
Y 1 bib d In based, lly maximum measurements. 
ce difheul 
50 
47 A49 — €o19 I 
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P 
Th ftn E hla f, £ 4h VERE 1 
(1) Temnocephala mexicana; (2) — — (3) Actinodactylella blanchardi; (4) 
i; (6) Saone solez; (7) Trochopus tubi- 
o) A 
Ni gata; (s) Epibdella bum 
porus; (8) Placunella pini; (9) e coccineum ; pruina ems (11) 
ncotyllabe nordmanni; (12) Udonella caligorum ; (1 ll ; (14) Pte 
nella molvæ; (15) Pseu quatinz; (16) th apiculatum; (17) Meri- 
zocotyle diaphanum ; (18) Dion agassizi; (19) Lophocotyle cyclophora ; (20) Calicotyle 
kroyeri; (21) le myliobatis; (22) phyranura osleri ; (23) P. oma hassalli ; 
(24) Erpocotyle levis; (25) Diplobothrium armatu (26) O tyle canis; (27) Platy- 
cotyle gurnardi ; (28) rocotyle scombri; (29) Phyllocotyle gurnardi; (3o) Plectano- 
cotyle elliptica; on Diplozoón paradoxum; (32) i ; (33) Octobothriu 
sagittatum ; (34) Octocotyle scombri ; (35) Dactylocoty: tvle denticulatum; (36) Diclidophora 
e thunninz; (39) Microcotyle longi- 
cauda; (40) Axine heterocerca; (41) —€— 
(43) Gyrodactylus pese (44) Dactylogyrus auriculatus ; (45) Diplectanum scienza; 
(46) Tetraonchus momenteron; (47) Amphibdel ella isset 
alis; (49) merken paedah (so) Fridericianella ovicola. 
affinis; (37) e epum: merluccii; (38) Hexacotyl 
teroc — ; (42) Gastrocotyle trachuri ; 
(48) Dactylodiscus bore- 
