ELASMOBRANCHIT. 
Pisces 41 
H. Virchow, SB. Ges. naturf. Berlin, 1895, pp. 98-103, writes on the 
development of the blood-vessels on the yolk-sao, and, pp. 105-120, 
on the development of the tail, in Selachian embryos. 
On the circulation of the blood in Chondropterygians ; ScitOENLElN & 
Willem, Bull. Sci. France Belgique, xxvi, pp. 442-468, figg. 
On digestion in Chondropterygians; E. Yung, Arch. Sci. Nat. (3) xxxiv, 
pp.. 464-468. 
On some points in the spermatogenesis of Selachians ; Sabatier, C.R. 
Ass. Franc, xxiii, i, pp. 173 & 174. 
Ou structural changes in the reproductive cells during spermatogenesis 
in Elasmobranchs ; J. E. S. Moore, Quart. J. Micr. Sci. xxxviii, 
pp. 275-313, figg., pis. xiii-xvi. 
Acanthocles bronni , A g. (foss.) : an account of the skeleton, chiefly of the 
skull, by 0. M. Reis, Abh. Senckenb. Ges. xix, p. 49, pis. i-vi, and 
Jahresb. Pollichia, 1894, p. 331. 
Bhabdiodus , n. g. ( Hybodont .) for R. parvidens , n. sp. (foss.), Rohon, M6m. 
Ac. Petersb. xli, 1893, No. 5, p. 53, pi. i, fig. 19, and ii, fig. 51, Opper 
Silurian, Oesel. 
Orectolobus , Bp., 1834, should supersede Crossorhinus , M. & H. ; Gill, 
P. U. S. Mus. xviii, p. 211. 
Scynviorhbms , Bp., 1846, should replace Scymnus , Cuv;, nec Kugelmann ; 
Gill, P. U. S. Mus. xviii, p. 191. 
Ccntrina salviani , Risso : on a specimen caught in a freshwater stream ; 
Nouns, Ann. Sci. nat. Porto, ii, p. 175. 
Centrophorus squamosus 1 Om., described and figured by Holt & Calder- 
woon, Tr. Dublin Soc. (2) v, p. 372, pi. xliji, fig. 1. 
Prist is sscphyrms , it. sp., Jordan & Starks, P. Calif. Ac. (2) v, p. 383, 
W. coast of Mexico. 
Raia , Cuv. : descriptions of the British and Irish species ; Holt & 
Calderwood, Tr. Dublin Soc. (2) v, pp. 380-404. 
T. Gill, P. U. S. Mus. xviii, p. 195, remarks on the generic names given 
to some aberrant or monstrous specimens of the genus Raia. 
On the electric caudal organ of Raia ; Iwanzoff, Bull. Moscou, 1895, 
pp. 53-118, pis. i-iii. 
Discopyge tschudii , Heck. : note by G. Fritsch, SB. Ak. Berlin, 1895, 
p. 499, fig. 
Ilypnos subniger, A. Dum. : note by G. Fritsch, t. c. p. 261. 
Narcobatus , Blainv., 1816, should supersede Torpedo , Dum., nec Forsk. ; 
Gill, P. U. S. Mus. xviii, p. 161. 
N archie entemedor , n. sp., Jordan & Starks, P. Calif. Ac. (2) v, p. 387, 
W. coast of Mexico. 
Urolophus togersi and umbrifer , n. spp., Jordan & Starks, t. c. pp. 388 
& 389, W. coast of Mexico. 
Pteroplated ratta, n. sp., Jordan & Starks, t. c. p. 390, W. coast of 
Mexico. 
Myliobates rovasendee, n. sp. (foss.), De-Alessandri, Mem. Acc. Torino 
(2) xlv, p. 284, pi., fig. 21, Miocene, Baldissero, Italy. 
