14 Pisces. 
PISCES. 
Raia. On the presence of a tympanum in this genus; Howes, J. Anat. 
Phys. xvii. pp. 188-190, pi. viii. 
Raid inerniis , var. n. of R. binoculata , Girard, Jordan & Gilbert, Syn. 
Fish. N. Am. p. 44, Santa Barbara, Cal. 
Tceniura atra , vii. p. 598, New Guinea, and mortoni , viii. p. 212, Bur- 
dekin River, Queensland, spp. nn., Macleay, P. Linn. Soc. N. S. W. 
Urolophus asterias, sp. n., Jordan & Gilbert, P. U. S. Nat. Mus. v. 
p. 579, Mazatlan and Panama. 
Myliobates oweni , A g. (foss.). Notes by Dames, l. c. p. 136. 
Myliobates dixoni , A g., p. 6, pi. i. fig. 7, and toliapicus , Ag., p. 7, pi. i. 
figs. 8-10, & p. 38, pi. ii. fig. 2 (foss.). Notes and figures ; Geinitz, Abh. 
Ges. Isis, 1883. 
HOLOCEPHALA. 
Chinuera abbreviata, sp. n., Gill, P. U. S. Nat. Mus. vi. p. 255, lat. 
40° 16', long. 66° 58', 1290 fath. 
GANOIDET. 
Davidokf, M. Beitrage zur vergleicheuden Auatomie der hinteren 
Gliedmasse der Fische. Morph. JB. ix. pp. 116-160, pis. viii. & ix. 
On Ceratodus. 
Dogiel, A. Die Retina der Ganoiden. Arch. mikr. Anat. xxii. 
pp. 419-472, pis. xvii.-xix. ; extract in J. R. Micr. Soc. (2) iii. 
p. 632. 
Haswell, W. A. On the Structure of the Paired Fins of Ceratcdus, 
with remarks on the general theory of the Vertebrate Limb. P. Linn. 
Soc. N. S. W. vii, pp. 2-11, pi. i. 
Koenen, A. von. Beitrag zur Kenntniss der Placodermen des Nord~ 
deutschen Oberdevon’s. Abh. Ges. G fitting, xxx. pp. 1-40, pis. i.-iv. 
Contains descriptions and figures of 6 species, 2 of which are described 
as new. 
Sagemehl, M. Beitrage zur vergleichenden Auatomie der Fische. 
Morph. JB. ix. pp. 177-227, pi. x. 
On the cranium of Amia calva } L. 
Coccosteus bickensis, Koenen, p. 17, pis. i. fig. 3, ii. fig. 2, & iii. figs 5-7, 
C. (Brachydirus) injlatus, Koenen, p. 26, pis. i. fig. 1, & iv. figs. 1-3 & 6, 
C. ( B .) bidorsatus , Koenen, p. 28, pi. i. figs. 2 & 4, and C. ( B .) carinatus , 
Koenen, p. 31, pi. ii. fig. 1, described and figured ; Koenen, l. c. 
(foss.). 
Aspidichthys? ingens , sp. n. (foss.), Koenen, l. c. p. 34, pis. iii. fig. 1, 
& iv. fig. 4, Upper Devonian of N. Germany. 
Anomalichthys scaber , sp. n. (foss.), Koenen, l. c. p. 38, pi. iii. fig. 2. 
Upper Devonian of N. Germany. 
Fterichthys ? ragosus , sp. n. (foss.), E. W. Claypole, P. Am. Phil. Soc. 
xx. p. 664, pi., Upper Chemung (P) beds, Northern Pennsylvania. 
