30 Puces. 
PISCES. 
Whitwell, J. R. The Ephiphysis Cerebri in Petromyzon fluviatilis. 
J. Anat. Phys. xxii, pp. 502-504, pi. xviii. 
Pogojeff, L. Ueber die feinere Structur des G eruchsorganes des Neun- 
auges. Arch. mikr. Anat. xxxi, pp. 1-14, pi. i. 
Beard, J. The Teeth of Myxinoid Fishes. Anat. Anz. iii, pp. 169—172. 
Discovery of vestiges of true teeth within the horny cones, or so-called 
teeth, of Myxine and Bdellostoma. 
Goette, A. Ueber die Entwicklung von Petromyzon fluviatilis. Vor- 
laufige Mittheilung. Zool. Anz. xi, pp. 160-163. 
BOiim, A. A. Ueber Reifung und Befruchtung des Eies von Petromyzon 
planeri. Arch. mikr. Anat. xxxii, pp. 613-670, pis. xxiv & xxv. 
Nansen, F. A Protandric Hermaphrodite ( Myxine glutinosa , L.) amongst 
the Vertebrates. Aarsber. Berg. Mus. f. 1887, No. vii, 29 pp. 
Myxine glutinosa is a protandic hermaphrodite; up to a body- length 
of 32-33 centim. it is a male, after that time it produces ova. There is 
no special breeding season for this Fish. 
LEPTOOARDII. 
Rohde, E. Histologische Untersuchungen iiber das Nervensystem von 
Amphioxus lanceolatus. Zool. Beitr. ii, pp. 169-211, pis. xv & xvi ; 
abstract in Zool. Anz. xi, pp. 190-196. 
Hatschek, B. Ueber den Schichtenbau von Amphioxus. Anat. Anz. 
iii, pp. 662-667, figs. 
INCERTiE SEDIS. 
Neweerry, J. S. On the Structure and Relations of Edestus ) with a 
Description of a gigantic New Species. Ann. N. York Ac. iv, 
pp. 113-122. 
Discussion of the views hitherto held on the nature of these fossils, 
which are provisionally regarded as the post-dorsal spines of large cartila- 
ginous Fishes. 
Edestua giganteua , u. sp., p. 121, pi. vi, fig. 1, Coal Measures, Mason 
County, Illinois. 
