CYCLOSTOMI, LEPTOCARDII. 
Pisces 39 
Pelromyzon marinus , L., and fluviatilis , L., note 6n the habits, by 
L. Vieira, Ann. Sci. nat. (Porto) i, 1894, No. 2, p. 79, pi. iv. P. 
fluviatilis, L., on individual variations ; Lonnberg, Bih. Svenska 
Ak. xviii (4) No. 2, 1893, p. 3. P.planeri , Bl., on a hermaphrodite 
specimen ; Beard, Rep. Brit. Ass. 1892, p. 790 (1893). 
Geotrict macrostomus , Burm., redescribed and figured by Berg, Ann. 
Mus La Plata, ii, 1893, Zool. p. 3, pi. i. Note by Gill, Science, 
xxiii, 1894, p. 30. 
Myxine glutinosa , L., on changes in the dentition ; Beard, t. c. p. 789. 
Palccospondylus gunni , Traq. (foss.), further description and figure by 
Traquair, P. Phys. Soc. Edinb. xii, 1893, p. 87, pi. i. 
LEPTOCARDII. 
J. Tuckey publishes an English translation of Hatschek’s work on 
tho AmpluoxuB and its dovolopmont. London : 1893, 8vo, 181 pp., 
9 pis. 
Chapter n of A. Milne - Marshall’s “ Vertebrate Embryology ” 
(London : 1893) deals with Amphioxus. 
E. ELeckel, in the introduction to Semon’s “ Forschungsreisen in 
Australien, &c.” (Jena: 1893, 4to), treats (pp. xiii-xv) of the 
phylogenetic position of the Acrania. 
W. B. Beniiam, Quart. J. Micr. Sci. xxxv, 1893, pp. 97-118, pis. vi & vii, 
has a paper on the structure of tho pharyngeal bars of Amphioxus. 
Remarks by J. W. Spengel, Anat. Anz. viii, 1893, pp. 762-765. 
On the Notochord of Aviphioxus ; B. Lwoff, Zeitschr. wiss. Zool. lvi, 
1893, pp. 299-309, pi. xvii. 
On a Lancelet from the Bahamas ; E. A. Andrews, Johns Hopkins 
Univ. Circ. xii, 1893, p. 104, and Ann. Nat. Hist. (6) xii, 1893, 
p. 236. 
Branchiostoma cultellum , Peters, note by A. Willey, Quart. J. Micr. 
Sci. xxxv, 1894, p. 361. 
