of the Fishery Bourd for Scotland. 
EXPLANATION OF THE PLATES. 
PLATE III. 
Hatschekia cornigera, sp. i. 
Fig. 1. Female, dorsal view, - - 
Fig. 2. Female, side view of eephalothorax, 
Fig. 3. One of the antennules, 
Fig. 4. One of the antenne, 
Fig. 5. One of the maxillipeds, 
Fig. 6. Foot of first pair, - 
Fig. 7. Foot of second pair, 
Chondracanthus Wilhamsonti, sp. 
Fig. 8. Fernale, dorsal view (adult specimen), = - : 
Fig. 9. Female, dorsal view (specimen nerely ature), 
Fig. 10. One of the antennules, 
Fig. 11, One of the antenne, 
Fig, 12. Mandible and maxilla, 
Fig, 13. First maxilliped, - 
Fig. 14. Second maxilliped, 
Fig. 15. One of the first pair of thoracic appendages, 
Fig. 16. One of the second pair, —- - - : 
Fig. 17. Male, side view, - - - : : S 
Pandarus bicolor, (?) var. 
Fig. 18. Female, dorsal view, - - : - 
Pandarus bicolor. 
Fig. 19. Female, dorsal view, - - 
PLATE IV. 
Fig. 1. Echinorhynchus agilis, Rudolphi, : - - 
Fig. 2. Proboscis of the same, : - - : 
Fig. 3. Hchinorhynchus proteus, Westrumb, . 
Fig. 4. Proboscis of the same, — - - - 
Vig. 5. Hchinorhynchus, sp. from a common trout, 
Fig. 6. Proboscis of the same (6a a spine more enlar ged), 
Fig. 7. Echinorhynchus acus, Rudolphi, - - : 
Fig. 8. Proboscis of the same, - 
Fig. 9. Tetrarhynchus megacephalus, Rudolphi (Scolex), 
Fig 10. A proboscis of the same, = 
Fig 11. Vetrarhynchus tetrabothrius, van Beneden, . - 
Fig. 12. Octobothrium Sybille, n. sp., - . : 
PLATE V. 
Fig. 1. Phyllobothriwn lactuca, van Beneden, 
Fig. 2. Acanthobothrium coronatum, van Beneden, 
Fig. 3. Bothriocephalus punctatus, Rudolphi, — - 
Fig. 4. Bothriocephalus proboscideus, Rudolphi, - 
Fig. 5. Ancistrocephalus microcephalus, Rudolphi, 
Fig. 6. Diphyllobothrium stemmacephalum, Cobbold, 
Fig. 7. Tetrarhynchus minutus, van Beneden, - 
Fig. 8. Portion of a proboscis of the same, near Baral ‘end, 
Fig. 9. Pyllobothrium thridax, van Beneden, - : 
Fig. 10. Tenia sp. from «common Eel, - - : : 
Fig. 11. Head of the same seen from above, : : - 
Fig. 12. An ovum of Distomum cestoides, van Beneden, 
Fig. 13. (?) Prosthecosacter sp., posterior end of 9 with larve in situ, 
Fig. 13. a. b. c., Three larve of the same removed, . - 
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