302 



Part III. — Twentieth Annual Report 



remarks concerning the Acanfliocotyle now recorded, that it is a very 

 distinct new species, and differs from others : 



1. In its general features. 



2. In its more slender and elongated body. 



3. In the anterior suckers not being well developed, and somewhat re- 



sembling those of A. verrilli, Goto. 



4. In the great development of the anterior glands. 



.5. In the form and structure of the hooks of the posterior sucker. 

 6. In the testes being smaller in number, and apparently more 

 developed. 



A second species — probably A. lohianeoi, Monticelli, has recently been 

 obtained in some material from the Firth of Clyde ; this specimen, which 

 measures 2*4 mm., will, however, require further study, as it is somewhat 

 imperfect. 



EXPLANATION OF THE PLATES. 



PLATES XII.— XIII, 

 PLATE XIL 



Eudactylina similis, sp. n. 



Female, side view 



Male, side view . 



Antennule, female 



Antenna, ,, 



Mandible, ,, 



Maxilla, ,, 



Anterior foot-jaw, female 



Posterior foot-jaw, ,, 



Foot of first pair, , , 



Foot of second pair, ,, 



Foot of fourth pair, ,, 



Foot of fifth pair, ,, 



Part of abdomen and caudal furca, female 



Antennule, male .... 



Posterior foot-jaw, male 



Foot of first pair, ,, 



Foot of second pair, ,, 



Foot of fourth pair, ,, 



Part of abdomen and caudal furca, male 



Eudactylina acuta. Van Beneden 



Fig. 20. Female, side view 



Fig. 21. Antennule 



Fig. 22. Foot of first pair . 



Fig. 23. Foot of second pair 



Fig. 24. Foot of fifth pair 



Fig. 25. Part of abdomen and caudal furca 



Clavella cluthce sp. n. 



Fig. 26. Female, dorsal view 



Fig. 27. Antennule 



Fig. 28. Antenna . 



Fig. 29. Maxilla . 



Fig. 30. Posterior foot- jaw 



Fig. 31. Foot of first pair . 



Diam. 



