THE DISCOBOLI. 95 



PLATE VIII. 



Cyclopterus lumpus Linne. Figs. 1-3, 15-17. 



Figs. 1-3. Brain: Fig. 1, the ujiper surface; Fig. 2, the side; and Fig. 3, the appearance from 



beneath. 

 Figs. 15-17- l'elvis and ventrals, right half ; Fig. 15 as seen from above, Fig. 10 from the outer side. 



and Fig. 17 from beneath. 



Liparis pulchellus Ayr. Figs. 4-7, 12-14. 



Figs. 4-6. Brain. Fig. 4 a dorsal, Fig. 5 a lateral, and Fig. 6 a ventral view. 

 Fig. 7. Otoliths. 



Figs. 12-14. Pelvis and ventrals; Fig. 12 the dorsal, Fig. 13 the lateral (right side), and Fig. 14 the 

 ventral aspect. 



Liparis Montagui Don. Figs. S— 11 . 

 Fig. 8. Otoliths. 



Figs. 9-11. Brain; Fig. 9 upper, Fig. 10 lateral, and Fig. 11 lower surface. 



PLATE IX. 



Figs. 1, 4-8. Liparis mucosus Ayr. Fig. 1, a side view of the skull; Figs. 4 and 5, irregular teeth; 



Fig. 6, operculum; Fig. 7, suboperculum; Fig. 8, interoperculum. 

 Fig. 2. Cyclopterus lumpus. Side of the skull. 



Fig. 3. Coitus octodecimspiuosus Mitch. Skull from the side. 



PLATE X. 



Fig. A. Liparis mucosus. Skull with bones in outline. 



Fig. B. Cyclopterus lumpus. Skull with bones in outline. 



Fig. C. Cottus groenlandicus C. & V. Skull with bones in outline. 



The numbers on the different bones are those used by Cuvier and Gunther. 1, Frontal; 

 2, Prefrontal; 3, Ethmoid; 8, Supraoccipital; 17, Intermaxillary; 18, Maxillary; 19, Subor- 

 bitals; 20, Turbinal; 22, Palatine; 23, Hyomandibular ; 24, Pterygoid; 25, Entopterygoid ; 

 26, Quadrate; 27, Pretympanic ; 28, Operculum; 29, Styloliyal; 30, Preoperculum; 31, Syra- 

 plectic; 32, Suboperculum; 33, Interoperculum; 31, Dentary; 35, Articular; 36, Angular; 

 37, Epihyal; 38, Ceratohyal ; 39, Basihyal ; 42, Urohyal; 43, Branchiostegal rays; 46, Post- 

 temporal; 47, Supraclavicula. 



PLATE XI. 



Cyclopterus spinosus Muller. 

 Figs. 1-3. Side, ventral, and front views. 



Cyclopleroides gyrinops Garman. Figs. 4-9. 

 Figs. 4-6. Surfaces : Fig. 4, lateral ; Fig. 5, inferior; Fig. 6, anterior. 



Figs. 7-9. Viscera : Fig. 7, from below; Fig. 8, from above; Fig. 9, from the right side, with the 

 esophagus toward the right hand. 



