40 Pisces. 
PISCES. 
Squalus infernus , Blainv., = Spinax niger , Sagre ; E. Moiieau, Bull. 
Soc. Zool. xvi, p. 47. 
Lcemargus borealis i Scor. : notes by Dawson, Can. Rec. iv, p. 304, 
pi. iv. 
Raid fylltty Ltk. : note by LOtken, Vid. Medd. 1891, p. 32. R. tra - 
tf/iwra, n. sp., Gilbert, P. U. S. Nat. Mus. xiv, p. 539, Gulf of California, 
822 faths. 
Rhinoptera steindachneri , n. sp., E verm ann & Jenkins, t. c. p. 130, 
pi. i, fig. 1, W. Coast of Mexico. 
Torpedo sinus-persici, Ksempf., figured by Sauvage, Hist. Madag. xvi, 
P u. 
ICHTHYOTOMI. 
A. Fritsch, Zool. Anz. xiv, pp. 21 & 22, sums up the results of his 
investigation of the Xenacanthidce. 
CYOLOSTOMATA. 
Biciirends, — . Untersuchungen fiber die Ilornzahne von Myxine gluti- 
nosa. Zool. Anz. xiv, pp. 83-87. 
Bujor, P. Note pr61iminaire sur la Metamorphose de V Ammoccetes 
branchialis en Petromyzon planeri. Rev. Biol, iii, pp. 201-212. 
. Contribution & l’Etude de la Metamorphose de V Ammoccetes 
branchialis en Petromyzon planeri. T. c. pp. 301-315, 325-339, 365- 
390, 417-426, & 474-486, pis. vi-ix, & iv, pp. 41-64, pis. i & ii. 
Owsjannikow, P. Sur l’embryologie du Petromyzon Jluviatilis. Bull. 
Petersb. (2) i, pp. 83-95 (1889). 
. Zur Entwicjselungsgeschichte des Flussneunauges. Yorlaufige 
Mittheilung. Mei. biol. xiii, pp. 55-67. 
Alcock, R. The Digestive Process of Ammoccetes. P. Cambr. Phil. Soc. 
vii, pp. 252-255. 
Cunningham, J. T. Spermatogenesis in Myxine glutinosa. Q. J. Micr. 
Sci. xxxiii, pp. 169-186, pi. iv, and Zool. Anz. xiv, pp. 22-27. 
LEPTOCARDII. 
Retzius, G. Biologische Untersuchungen. Neue Folge. ii. Stock- 
holm : 1891, 4to. 
2. Zur Kenntuiss des centralen Ncrvensystcms von Amphioxus lunceo- 
latus ; pp. 29-46, pis. xi-xiv. 
