20 Pisces. 
PISCES. 
Pimelodus ( Pimelodella ) nigribarbis , Blgr., redescribed and figured by 
Boulenger, P. Z. S. 1891, p. 232, pi. xxv, fig. 1. P. ( P .) eigenmanni, 
n. n. for P. buckleyi , Eigenm., nec Blgr. ; id. t. c. p. 232. P. ( Pseudopi - 
melodus) cottoides , n. sp., id. t. c. p. 233, pi. xxv, fig. 2, Rio Grande do Sul. 
P. argenteus , p. 631, Plate U. and Parana, and spegazzinii, p. 632, R. 
Durango, n. spp., Perugia, Ann Mus. Genov. (2) x. 
Laimunema borbonica , Sauvg., figured by Sauvage, t. c. pi. xlviii, fig. 1. 
Ancharius fuscus , Stdr , figured by Sauvage, t. c. pi. xlviia, fig. 2. 
Galeichthys feliceps, Smith : the eggs are carried by the male in the 
buccal cavity ; Boulenger, P. Z. S. 1891, p. 148. 
Atopochilus guentheri , n. sp., Suiiiltiiuis, Tijdschr. Nederl. Dierk. Ver. 
(2) iii, p. 86, pi. vi, fig. 2, Congo. 
Syuodontis greshojjii^ngelica, and alberti, n. spp., id. t. c.pp.87 & 88, Congo. 
Cyclopium cyclop um , Humb. : remarks by F. Day, in Whyraper’s Supp. 
App. to Trav. Andes of Ecuador, p. 137, who concludes to the identity of 
Arges brachycephalus, Gthr., and Stygogenes liumboldtii , Gthr., with the 
fish described by Humboldt. The fish figured is Arges whyniperi , Blgr. 
Chcetostomus cirrhosus, Val : heads of male and female figured by 
Boulenger, P. Z. S. 1891, pi. xxvi, fig. 1. G. aculeatus , n.sp., Perugia, 
Ann. Mus. Genov. (2) x, p. 637, R. Paraguay. 
Exostoma oschanini , n.sp., IIerzenstein. Bull. Petersb. (2) i, p. 119 
(1889), Turkestan. 
Bunocephalus iheringii , n. sp., Boulenger, P. Z. S. 1891, p. 235, pi. 
xxvi, fig. 2, Rio Grande do Sul. 
Otocinclus nigricauda , n. sp., id. t. c. p. 234, pi. xxv, fig. 3, Rio 
Grande do Sul. 
Trichomycterus minutus , n. sp., id. t. c. p. 235, pi. xxvi, fig. 3, Rio 
Grande do Sul. 
* Acanthopoma, n. g., allied to Stegophilus. A. annectens, n. sp., LOtken, 
Yid. Medd. 1891, p. 53, fig., Brazil. 
Otolithus ( Arius ) crassus (= Raia similis , A. S. Woodw.), p. 80, Eocene, 
England, germanicus, p. 81, pi. i, fig. 3, & pi. vi, fig. 8, Oligocene, Germany, 
danicus , p. 81, fig., Eocene, Denmark, and vangionis , p. 81, pi. vi, fig. 4, 
Oligocene, Germany : n. nu. (foss.), Koken, Z. geol. Ges. xliii. 
SCOPELID^I. 
On the Scandinavian species ; Lutken, Vid. Medd. 1891, pp. 203-233. 
Scopelus pseudocrocodilus , Moreau, = S. elongatus , Costa ; Bellotti, 
Atti Soc. Ital. xxxiii, p. 132. S. bonaparti, C. & V., = S. maderensis, 
Lowe ; id. t. c. p. 135. 
Myctophum regale , n. sp., Gilbert, P. U. S. Nat. Mus. xiv, p. 544, 
Gulf of California, 603-822 faths. M. ( Stenobrachius ) leucopsarum , n. sp., 
C. H. & R. S. Eigenmann, P. Cal. Ac. Sci. (2) iii, p. 5, San Diego. 
^ Liaphus , n. g., characters of Myctophum , but the phosphorescent spots 
divided into halves by a median black line ; C. H. & R. S. Eigenmann, 
t. c. p. 3 ; for Scopelus engraulis , Gthr., and Diaphus theta t n. sp., id. t. c. 
p. 4, San Diego, California. 
