ADDENDA. 357 



The differences between " Bull-trout " and Salmon are sometimes 

 so slight as to bo scarcely perceptible by an inexperienced eye. 

 From what I have seen on the Beauly in the month of August, I 

 should, say that the numbers of Salmon, Bull-trout, and Sea-trout 

 are as 30 : 3 : 1. 



I may also add here that I have seen specimens oi Sahno hracliy- 

 poma in the same river, and that they are named there " Phinok," 

 a name used for the Grilse-state of S. trutta on other rivers. Spe- 

 cimens of S. fario frequently descend to the sea, and assume a bright 

 silvery coloration, with numerous X-shaped spots. 



Page 172. Retropinna richardsonii. 

 Tc-m. Adult. From the Haslar Collection. 



Page 200. Thymallus vulgaris. 



This species is also found south of the Alps. 



y. Fine specimen. Col de Teude (Maritime Alps). From Dr. Dea- 

 kin's Collection. 



Page 203. Argentina sphyrsena. 



c. Seven inches and a half long. Nice. From Dr. Deakin's Col- 



lection. 



Page 219. Mormyrus brachyistius. 

 a. Fine specimen. Sierra Leone. Purchased of Mr. Stevens. 



The height of the body is somewhat more than the length of the 

 head, which is one-fifth of the total (without caudal). Pectoral 

 reaching slightly beyond the base of the ventral. A. 29. 



Page 232. Umbra limL 

 h. Adult. United States. Purchased. 



Page 240. Belone choram. 



d. Adult. Presented by Dr. Alexander Smith. — This specimen is 



said to be from the coast of the Camaroon district (West Africa). 



Page 269. Hemirhamphus pleii. 

 k. Adult. Trinidad. Purchased of Mr. Cutter. 



Page 281. Exocoetus brachypterus. 

 c. Five inches and a half long. Formosa. From Consul Swinhoe's 

 Collection. 



Page 313. Haplochilus infrafasciatus. 

 Specimen b ought to be referred to H. fasciolaius. 



