PHYSOSTOMI. 
Pisces 30 
Salmo. In Notes on a Collection of Fishes from Clackamas River, 
Oregon,” Pr. U. S. Nat. Mus. i. pp. 69-85, Jordan discusses the sub- 
division of the old genus Salmo into the smaller genera Oncorrhynchus^ 
Cristivomer, Salvelinus, and Salmo. A synoptical table of all the species 
of the United States classified in this manner, the result of the most 
recent investigations by Grill & Jordan, is given in Jordan’s Manual of 
Vertebrates, 2nd ed., Addenda, pp. 355-362. 
Salmo henshawi, G. & J., streams of California?], is indicated as a 
new species, id. 1. c. p. 358. 
Bathylagus, g. n. Body oblong, compressed, covered with thin deci- 
duous scales of moderate size ; no phosphorescent organs ; head short, 
rather compressed, with thin membranaceous bones ; mouth very narrow, 
transverse, anterior, margin of upper jaw formed by intermaxillary and 
maxillary, which is very short, dilated : teeth in intermaxillary rudimen- 
tary, those of lower jaw extremely small, implanted on edge of bone, 
forming a minute serratore ; a series of minute teeth across vomer and 
along palatine ; eye very large ; pectoral and ventral fins developed, the 
latter seven-rayed and inserted opposite to the dorsal, at considerable 
distance from pectoral ; dorsal in middle of length of body ; adipose fin 
small, not very far from caudal ; anal fin of moderate length or many- 
rayed; gill-opening narrowed, commencing opposite root of pectoral, 
and extending across isthmus, the gill-membranes being united and 
not attached to the isthmus ; gill-rake^ lanceolate, rather ^long, gills 
small, pseudobranchisB well developed. B. antarcticus and atlanticus, 
spp. nn., Gunther, Ann. N. H. (5) ii. p. 248. 
Salmo pluvius, Oncophorus haberi and yessoensis, Hilgendorf, MT. Ges. 
Ostas. xi. [1876] p. 25, spp. nn. 
Esocidj5. 
r""'" 
Tomes, C. On the Hinged Teeth of the common Pike. Q. J. Micr. Sci. 
xviii. pp. 1-6, 1 pi. 
Lophius, the Hake, and other Gadoids, possess hinged teeth, and the 
writer now describes a similar condition in certain regions of the mouth 
\ of the common Pike. 
ScOMBRESOCIDiE. 
Belonidce. Cope insists that Belone must constitute a separate family 
on account of possessing a distinct coracoid bone and vertebrae with 
zygapophyses, a character unusual among fishes. Pr. Am. Phil. Soc. xvii . 
p. 695. 
Belone stohmanni, sp. n., Steindachner, SB. Ak. Wien, Ixxviii. Abth. i. 
p. 397, Pacific. 
Hemirrhamphus breviceps, sp. n., Castelnau, P. Linn. Soc. N. S. W. ii. 
p. 240, Brisbane. 
Exocoetus. K. Mobius : Die Bewegungen der fliegenden Fische durch 
die Luft. I. Beobachtungen und Ansichten fiber den Flug der Exocce- 
ten. II. Ueber den Bau der fliegenden Fische ffir ihre Bewegung durch 
V 1878. [voL. XV.] B 9 
