CYCLOSTOMI, LEPTOCARDII. 
Pisces 43 
CYCLOSTOMI. 
W. H. Gaskell, J. Anat. Physiol, norm. path. (2) xiii, pp. 638-670, 
pi. xlv, continues his study of the structure of Ammoccetes with 
special reference to the origin of Vertebrates. 
B. Dean, Festschrift C. v. Kupffer, pp. 221-276, figg., pis. xv-xxvi, gives 
a general account of Myxinoid development from the egg and 
segmentation to hatching, based on Bdellostoma stouti. Also Science 
(2) ix, p. 311. 
F. Doflein, Yerh. Deutsch. zool. Ges. 1899, pp. 21-30, writes on the 
development of Bdellostoma stouti. 
C. v. Kupffer, SB. Ges. Munchen xv, pp. 21-35, figg., remarks on the 
development of the head of Bdellostoma. 
F. Doflein, Festschrift C. v. Kupffer, pp. 339-352, figg-, pis. xxxiii-xxxv, 
writes on the formation of the ova and the oviposition in Bdellostoma. 
N. K. Koltzoff, Anat. Anz. xvi, pp. 510-523, figg., has a preliminary 
communication on the metamery of the head in Petromyzon planeri. 
K. IIerfort, Anat. Anz. xvi, pp. 369-376, figg., has observations on the 
segmentation of the egg of Petromyzon fluviatilis. 
M. W. Wheeler, Zool. Jahrb. Anat. xiii, pp. 1-88, pis. i-vii, describes the 
development of the uri nogenital organs of the Lamprey. 
O. Maas, Festschrift C. v. Kupffer, pp. 197-220, pis. xii-xiv, writes on the 
structure of the intestinal canal in Myxine glutinosa. 
K. E. Schreiner, Bergens Mus. Aarbog 1898, No. 1, writes on the 
histology of the intestinal tract of Myxine glutinosa. 
A. Schaper, Anat. Anz. xvi, pp. 439-446, figg., has remarks on the 
histology of the brain of Petromyzon. 
E. Giglio-Tos, Anat. Anz. xv, pp. 298-300, has further remarks on the 
blood-corpuscles of the Lampreys. 
M. Ascoli, Arch. mikr. Anat. liii, pp. 623-631, pi. xxix, writes on the 
origin of the blood-corpuscles of Petromyzon. 
Miss B. Alcock, J. Anat. Physiol, norm. path. (2) xiii, pp. 612-637, has a 
paper on digestion in Ammoccetes. 
Petromyzon planeri, Bl. On a larva with trifid tail: Barfurth, Arch. 
Entwickmech. ix, p. 27, figg., pi. iii; P. wilderi, Gage. On the 
habits: Gage, P. Amer. Ass. xlviii, p. 256. 
Exomegas macrostomus , Burm. Note by Berg, Comun. Mus. Buenos Aires 
i, p. 91. 
Macrophthalmia chilensis , Gray. Remarks by B. Dean, Science (2) ix, 
p. 740. 
Myxine australis , Jen., p. 345, pi. lxviii, fig. 8, limosa, Gir., p. 346, 
pi. lxviii, fig. 7, and glutinosa , p. 348, pi. lxviii, fig. 5, redescribed and 
figured by Garman, Mem. Mus. Harvard xxiv; M. circifrons , p. 344, 
pi. lxviii, figg. 1-4, Gulf of Panama, 730 faths., tridentiger , p. 345, 
S. coasts of S. America, and acutifrons , p. 347, pi. lxviii, fig. 6, Straits 
of Magellan, spp. nn., id. ibid. 
LEPTOCARDII. 
Pp. 2137-2170 of E. Perrier’s ‘Traite de Zoologie’ deal with the Acrania. 
J. F. Hetmans & O. Van der Stricht, Mem. Cour. Ac. Belgique (4to) 
lvi, 1898, No. 3 (74 pp., 13 pis.), have a memoir on the nervous 
system of the Amphioxus. 
G. Schneider, Anat. Anz. xvi, pp. 601-605, figg., writes on resorption and 
excretion in Branchiostoma lanceolatum. 
