38 Pisces 
V. PISCES. 
ACANTHODII. 
Acanthodes striatus , sp. n. (foss.), Wellburn, Geol. Mag. (2) Dec. iv, viii, 
p. 219, Devonian, Lancashire. 
ICHTHYOTOMI. 
Cladodus unicuspidatus , sp. n. (foss.), Traquair, Geol. Mag. (2) Dec. iv, 
viii, p. 112, Lower Carboniferous, East Fifeshire. 
INCERTiE SEDIS (ICHTHYODORULITES). 
J. Y. Rohon, SB. Bohmisch. Ges. 1901, No. xvi, 31 pp., 2 pis., has a contri¬ 
bution to the anatomy and histology of the Psammosteidce. 
Ganosteus , g. n., allied to Psammosteus , for G. tuberculatus and G. steUatus , 
spp. nn., Rohon, t. c. p. 12, Devonian of Livonia. 
Acanthaspis tuberculatus, sp. n., Eastman, Centrbl. Mineral. 1900, p. 178, 
Devonian of Eifel. 
Platacodon nanus , Marsh. Note by Hatcher, Ann. Carnegie Mus. i, 
p. 128. 
Euctenodopsis, g. n., for a species apparently allied to Euctenius , Traq. 
Wellburn, Geol. Mag. (2) Dec. iv, viii, p. 220; E. tenuis , sp. m, id. 
ibid., Devonian, Lancashire. 
Helicoprion , Karpinsky. On a newly-discovered fragment: Koken, 
Centrbl. Mineral. 1901, p. 225, fig. Remarks on the morphological 
nature of these ichthyodorulites: Klaatsch, t. c. pp. 429-436, figg. 
Eucentrurus paradoxus , g. and sp. nn., for a strange organism, possibly 
Selachian: Traquair, Geol. Mag. (2) Dec. iv, viii, p. 114, Lower 
Carboniferous, Eastern Fifeshire. 
cyclostomi. 
L. Plate, Tagebl. v, Int. Zool. Congr. No. 8, pp. 7 & 8, remarks on the 
Cyclostomes of the Southern Hemisphere. 
On the Cvclostomes of Japan: Jordan & Snyder, P. U. S. Mus. xxiii, 
pp. 729-734. 
J. Schaffer, Anat. Anz. xix, pp. 20-29, pi. 1, describes the minute struc¬ 
ture and development of the cartilage of the caudal fin in Petromyzon 
and Ammocoetes. 
C. M. Jackson, J. Cincinnati Soc. xx, pp. 13-48, figg., 3 pis., investigates 
the vascular system of Bdellostoma dombeyi. 
W. H. Gaskell, J. Anat. Physiol, norm. path. (2) xv, pp. 224-267, figg., 
continuing his investigations on the origin of Vertebrates, deeds with 
the optic nerves of Ammocoetes. 
J. F. Holm, Morphol. Jahrb. xxix, pp. 365-401, pis. xix-xxii, investigates 
the finer anatomy of the nervous system of Myxine glutinosa. 
W. Lubosch, Morphol. Jahrb. xxix, pp. 402-414, figg., pi. xiii, describes 
the first appearance of the olfactory organs in Ammocoetes and its 
connections with the neuropore. 
K. Herfort, Arch. mikr. Anat. lvii, pp. 54-95, pis. iv-vi, writes on the 
maturation and fecundation of the ovum of Petromyzon fluviatilis. 
Olga Rosmini, Boll. Mus. Torino xvi, No. 390, studies the variations of 
form in Petromyzon planeri and its larval form, Ammocoetes branchi- 
alis. 
