200 
ZOOLOGICAL LITERATURE. 
J Synodontis schall is described by Bleeker from specimens from tbe Cape. 
Nederl. Tydschr. Dierk. ii. 1865, 266. 
Synodantis guttatuSf sp, n., and Synodontis labeOj sp. n., GUnther, Ann. & 
Mag-. Nat. Hist. 1865, xv. pp. 452 & 463, from West Africa. 
Styyoyenes cyclopum and Brontes prenadilla. Prof. Wagner’s account of 
these fishes renders it almost certain that the tales of their being ejected by 
volcanic action are fabulous, that they inhabit Alpine pools of the Andes at 
an altitude of from 7000 to 13,400 feet, and that, if pools or lakes formed in 
old craters are emptied in consequence of volcanic eruptions, the fishes in- 
habiting them are naturally carried off with the descending waters. Ab- 
handl. Bayr. Ak. Wiss. x. 1, p. 34 et seq. 
Plecostomus bichrhosus. A species from Panama has been determined as 
^ Ilypostomus plecostomus by Kner and Steindachner, Abhandl. Bayr. Ak. 
Wiss. X. 1, p. 60. 
Chcetostomus drrhosus is found in the Rio Chagres, according to Kner and 
Steindachner, 1. c. p. 61. 
Loricaria uracantha is described and figui-ed by Kner and Steindachner, 
1. 0 . p. 56, taf. 6. fig. 3. — horicaria lima (?), ibid. p. 68. 
Trichomycterus tcenia is described and figmed by Kner and Steindachner, 
1. e. p. 52, taf. 6. fig 1. — T. latkeps^ ibid. p. 54, taf. 6. fig. 2. 
^ ScOPELIDiE. 
ChloropJithalmus. Prof. Agassiz is inclined to regard this fish as the 
young of AulopuSy and, moreover, the greater part of the Mediterranean 
Scopeloid genera as the young of large Scombroides. Ann. Sc. Nat. 1865, 
iii. p. 57. 
STERNOPTYCHIDiE. 
^ Argyvopelecus, On its metamorphosis into ZeuSy see p. 188. 
Cyprinid^. 
Hr. Jaokel has published his observations on Cyprinoids 
which are supposed to be hybrids, viz. on the so-called Abrami- 
dopsis leuckartiiy Bliccopsis erythrophthalmoideSy Bliccopsis 
abramo-rutiluSy and Scardiniopsis anceps. Corr.^Bl. zool. -miner. 
Ver. Regensb. 1865, pp. 36-41, 44-49. 
Mr. Gill has made the following statement with regard to 
genera of American Cyprinoids proposed by Girard (Proc. Ac. 
Nat. Sc. Philad. 1865, p. 70) 
The genera Lavinuiy Siborna, Alganseay TigomUy Cheonduy GilUy Btycho^ 
cMluSy and Mylochilus are closely related to each other, and cannot be dis- 
tributed among different subfamilies, as has been attempted. Indeed some 
of the genera so separated are so intimately allied that their claims to generic 
distinction are extremely doubtful. Siborna appears to be nearly allied to 
Lavinia, and includes only the S. crassicauday the S. atraria belonging rather 
to Alyansea. Algansea itself and Tiyoma are scarcely distinguishable, they 
differing only in the pharyngeal teeth — Algansea having teeth 5.6, iucreas- 
