ADDENDA. 523 



The ground-colour is yellowish-brown, with irregiilar dark-brown 

 spots and dots ; the lower- side of the tail with white dots. The 

 vertical fins and the pectorals with brown dots, arranged in series. 



lines. 



Total length 38 



Height of the body 8 



Smallest height of the tail 3 



Greatest width of the body 6| 



Length of the head 9 



Diameter of the eye 2| 



Length of the caudal fin 7 



of the pectoral fin 10 



Page 168. Cottus tricuspis. 



Add to the synonymy : — 

 Phobetor tricuspis, Gaimard, Voy. Scandin. pi. 4. fig. 1. 



Page 170. Centridermichtliys asper. 



a. Type of the species. Columbia River. Prom the Haslar Col- 

 lection. 



Page 171. Centridermichthys parvus. 



This species is very closely allied to C. asper. 



a. Adult. Fraser's River. Voyage of H.M.S. Plumper.— D. 8 ] 21. 

 A. 18. 



Page 171. CentridermicMhys maculosus. 



i-t. Young. Vancouver Island. Voyage of H.M.S. Plumper. — 

 Palatine teeth and tentacles scarcely perceptible. 



Page 172. Centridermiclithys armatus. 



d. Fine specimen. Vancouver Island. Voyageof H.M.S. Plumper. — 

 D. 8 1 19. A. 18. 



Page 172. Icelus hamatns. 

 Figured by Gaimard, Voy, Scandin. pi. 1. f. 2. 



Page 173. Triglops pingelii. 

 Fisrured by Gaimard, Voy. Scandin. pi. 1. f. 1. 



Page 17G. Polycaulus elongatus. 

 n. Fine specimen. \moy (China). 



