354 APPENDIX. 
Page 91: 
Jordan & Evermann divide the Ezoceetide into four families: 
Esocide, Scombresocide, Hemiramphide, and Exocetide. 
Page 93, read: 
HYPORHAMPHUS Gill, instead of Hemiramphus, which 
contains H. balao, etc. 
Our species is: 
224, H. roberti (Cuv. & Val). See Jordan & Evermann, pp. 
721, 722, 
Page 93, read: 
103. EXOCCETUS Linneaus, instead of Halocypselus. 
The species is: 
227. E. volitans Linnzus, instead of E. or H. evolans, a later 
name. See Jor. & Everm., part iv. 
Instead of 104. Tencastiin, read: 
104. EXONAUTES Jordan & Evermann ; with species ; 
228. E. exsiliens (Miiller), 
229. EB, rondeletii (C. & V.), 
230. BE. vinciguerree (Jor. & Meek.), 
231. EH. speculiger (C. & V.) and 
104 b. CYPSELURUS Swainson, with species : 
232. C. heterurus (Rafinesque). 
233. C. furcatus (Le Sueur). 
234. C. gibbifrons (C. & V.). 
The original Exocetus volitans was the species called Halocyp- 
selus evolans. 
Page 98: 
The species of Gasterosteus all seem to merge by degrees into 
one, G. aculeatus (L.). 
Page 100, add: 
113. KIRTLANDIA Jordan & Evermann, for aa, with serrated 
scales. 
248. M. gracilis (Giinther) is found with M. beryllina, in the 
Potomac, and the latter may not be distinct. The name gracilis 
is the older. 
Page 103, read: 
Famity LI. RACHYCENTRIDSA, instead of Elacatide. 
Also read : 
120. RACHYCENTRON Kaup. 
258. R. canadus (L.). 
Page 104, read: 
260. Tetrapturus imperator (Bloch & Schneider). 
261. Istiophorus nigricans (Lac¢épéde). 
