124 
PISCI3S. 
Pseudorhamdia fur, Ltk., pis. ii. & iii. fig. 3 ; lateristriga, M. & Tr., 
p. 172, and vittata, Ltk., p. 173. 
Rhamdia hilarii, Val., p. 175 ; R. microcephala, Ltk., pi. iii. fig. 7 ; and 
minuta, Ltk., pi. iii. fig. 6. 
Auchenipterus lacustrisj Rhdt., Ltk., ^ , p. 148. 
Doras matmoratus, Rhdt., Ltk., pi. i. fig. 1. 
Glanidium albescens, Ltk., $ , pi. iii. fig. 5. 
Trichomycterus hrasiliensis, Ltk., pi. iii. fig. 8. 
Stegophilus insidiosus, Rhdt., p. 136. 
The following new Siluridce of the group Doradina from Brazil are 
described by Steindachner, SB. Ak. Wien, Ixxi. : — 
Oxydoras orestis, p. 138, pi. i. 
Rhinodoras amazonum, p. 141, pi. ii. ; R. teffeanus, p. 145, pi. iii. 
Doras marmoratus (Rhdt.), p. 147, pi. iv. 
CyPRINIDiE. 
Fatio has found, in the greater number of species inhabiting the 
Swiss waters, a greater development of the first pectoral ray in the 
males, and in the Minnow {Phoxinus Icevis') a still more marked swelling 
of not one only, but six, seven, or eight rays in the male, and this not 
exclusively at the breeding period, but more or less throughout the year. 
According -to this author, partial melanism in the smaller Cyprinoids 
is invariably due to the presence of a parasite apparently somewhat 
dilferent from Diplostomum cuticola, Nordm. (1832), the local irritation 
of which causes an aggregation of the dark pigmentary cellules. Arch. 
Sci. Nat. (n.s.) Iii. pp. 29-44. 
ISclerognathus urus, Agass. & Gthr.] Catastomus ICatostomus'] bubalus, 
Kirtl. Note on this fish, the “ Buffalo sucker,” in the Ouachita river, 
and on its peculiar oral structure. J. Leidy (quoting G. W. Lawrence), 
P. Ac. Philad. 1875, pp. 125 & 126. 
Squalius haicalensis, sp. n., Dybowski, Verb. z.-b. Wien, xxiv. p. 388, 
rivers round Lake Baikal. 
Discognathus prochilus, sp. n., Sauvage, Ann. Sci. Nat. (6) i. Art. No. 6, 
p. 8, Setchuan. 
Barbus (Systomus) simus, sp. n., id. ibid., China. 
Gobio imberbis and argentatus, spp. nn., id. 1. c. p. 9, China. 
Saurogobio guichenoti, sp. n., id. 1. c. p. 10, Yang-tse Kiang. 
Rhinogobio ventralis, sp. n., id. 1. c. p. 11, Yang-tse Kiang. 
Rasbora blanchardi, sp. n., id. 1. c. p. 12, China. 
Xenocypris cenea, sp. n., id. 1. c. p. 13, China. 
PsilorhyncJius sinensis, sp. n., id. 1. c. p. 14, Setchuan. 
Nemachilus variegatus, Dabry, redescribed, and N. lividus, bleekeri, 
and bipartitus, spp. nn., id. 1. c. pp. 14 & 15, China. 
Cobitis sinensis, sp. n., id. 1. c. p. 16, Western Setchuan. 
Lepidocephalichthys macrostigma, Dabry, described, id. ibid., China. 
Parabotia fasciata (Guich.) redescribed, id. 1. c. p. 17, Yang-tse Kiang. 
