PISCES. 
139 
above, p. 6 (vol. ii. pp. 351-356), mentions some 50 species of Fishes ob- 
served by him in Vancouver Island and British Columbia. However, this 
list requires some revision, inasmuch as several species must have been in- 
troduced into it from recollection only or from other sources, no specimens 
having been collected of them, — for instance, Salmo paucidens, four species of 
Gasterosteus. Further, all the species of Ditrematidce are received into the 
list — for instance, those from California and even from Japan. The body of 
the work contains many details on the habits and capture of Salmonoid Fishes, 
Herring, Sturgeon, Ditrema, &c. 
Chili. Dr. Philippi’s remarks on Chilian freshwater fishes are published 
in Monatsber. Ak. Berl. 1866, pp. 708-717. The species described as new will 
be mentioned subsequently. 
Port Jackson. The Vienna Collection received two collections of fishes 
from Port Jackson, which are described bj-^ Dr. Steindachner in Sitzgsber. Ak. 
Wiss. Wien, 1866, liii. pp. 424-480, with 7 plates. The specimens are re- 
ferred to 71 species, 21 of which are described as new. However, as far as 
we have examined these supposed new species, seven have already proved to be 
previously described. 
DIPNOI. 
Prof. Peters opposes the opinion of those who unite Lepidosiren and Pro- 
topteriis with the Ganoids, from which they essentially differ (beside the 
structure of the auricle of the heart and the valves of the aorta) [by the ab- 
sence of a muscular coat in the base of the aorta, and] by the form of the la- 
minar branchiae, united to each other as far as the middle, and destitute of 
cartilaginous supports. As regards the external branchiae of Protopterus (con- 
sidered by Dr. Steindachner to be of importance only during the earliest 
periods of life) Prof. Peters shows that these organs increase in size 6ven after 
the animals have attained a reproductive age (at less than 1 metre in length), 
and that, if they are found quite aborted in very old individuals, this is an 
individual occurrence. He again directs attention to the composite struc- 
ture of the paired fins of Pliinocryptis (Protopterus) as an essential generic 
difference. Monatsber. Akad. Wiss. Berl. 1866, January, pp. 12-13 (or Ann. 
& Mag. Nat. Hist. 1866, xvii. p. 473). 
Subsequently the author convinced himself of the presence of muscular 
fibres in the bulbus aortfe. Ibid. p. 509. 
Lepidosiren nnnectens. Prof. Dum^ril has observed the formation of the co- 
coon by two specimens living in the menagerie at the .Tardin des Plantes. 
Compt. Rend. 1866, January 8, p. 97 (Ann. & Mag. Nat. Hist. xvii. p. 160). 
Lepidosiren paradoxa. On its great scarcity aud difficulty of obtaining 
specimens, see Sclater & Bates, Proc. Zool. Soc. 1866, p. 34. 
ACANTHOPTERYGII. 
Percii);e. 
Perea Jluviaiilis. Jlr. W. II. Ransom lias found tlio micropylo of the ova 
of tlie Perch. It is regularly placed facing towards the cavity of the tube 
formed by the network in which the ova are arranged. Ann. & Mag. Nat. 
Hist. xvii. p. 79. 
Labrax schbnleinii (Ptrs.) is most probably identical with L.. lineatus. 
Peters, Monatsber. Ak. Wiss. Berlin, 1866, p. 512. 
