23 Pisces. 
PISCES. 
PLECTOGNATHI. 
Monacanthus filicauda^ p. 50, pi. xxiii. fig. d, New Guinea, tessellatus, 
p. 64, pi. xxiii. fig. 11 , Philippiiios, and modestus, p. 73, Japan, spp. nn., 
Gunther, Zool. Challenger Exp. i. pt. 6. 
Monacanthus trachylepiSj Gthr., redescribed ; Klunzinger, SB. Ak. 
Wien, Ixxx. Abth. i. p. 422. 
CYOLOSTOMATA. 
/ Retzius, G. Das Riechepithel der Cyclostomen. 
\ 1880, pp. 9-23, pi. hi. 
Arch. Anat. Phys. 
/ Scott, W. B. Vorlaufige Mittheilung fiber die Entwickelungsgeschichte 
der Petromyzonten. Zool. Anz. 1880, p. 422. 
LEPTOCARDII. 
Balfour, F. M. On the Spinal Nerves of Amphioxus. Q. J. Micr. Sci. 
XX. pp. 90 & 91. 
PouciiET, — . On the Laminar Tissue of Amphioxus. Tom. cit. 
pp. 421-430, pi. xxix. 
Rice, H. J. Observations upon the Habits, Structure, and Develop- 
ment of Amphioxus lanceolatus. Am. Nat. xiv. pp. 1-19, woodcuts. 
