8 Pisces. 
PISCES. 
BATOIDEI. 
A. Gunther, under the heading “Ray,” contributes a short account of 
the Batoidei in the 9th edition of the Encyclopaedia Britannica (vol. xx, 
pp. 299 & 300, figs.). 
Fritscii, G. Ergebuisse der Vergleichungen an den elektrischen 
Organen der Torpedineen. Arch. Anat. Phys. 1886, pp. 358-370. 
Petelenz, J. Ueber die Anzahl der elektrischen Nerven bei Torpedo 
marmorata , Risso. Zool. Anz. ix, pp. 226-229, fig. 
Krause, W. Ueber die Folgen der Resection der elektrischen Nerven 
des Zitterrochen. SB. Ak. Berlin, 1886, pp. 675-680. 
PeriSnyi, J. v. Beitriige zur Embryologie von Torpedo marmorata (7\ 
galvanii, Risso). Zool. Anz. ix, pp. 433-436, aud Math. Nat. Ber. 
Ung. iv, pp. 214-216. 
Ryder, J. A. On the Earlier Stages of Cleavage of the Blastodisk of 
Itaia erinacea. Bull. U. S. Fish Comm. 1886, pp. 8-10, fig. 
Zittel regards the fossil scutes described as Acipenser molassicus , 
Probst, and A. tuberculosus , Probst, as bucklers of Rays; SB. bayer. Ak. 
1886, pp. 261-264. 
Torpedo marmorata : observations on living specimens; Du Bois Rey- 
mond, SB. Ak. Berlin, 1886, pp. 691-750. T. fairchildi , Hutton : on 
breeding habits; Robson, N. Z. J. Sci. ii. pp. 27 & 123. 
Gymnotorpedo, n. subg., for the species with smooth spiracles (T. occi- 
dentalis , hebetans , californica ) ; Fimbriotorpedo t n. subg., for those with 
fringed spiracles (T. marmorata ) ocellata , panthera , &c.) : G. Fritsch, 
Arch. Anat. Phys. 1886, p. 365. 
Raia agassizii , n. sp. (foss.), Larrazet, Bull. Soc. geol. xiv, p. 259, 
pi. xiii, figs. 1-6, Tertiary of Villa Urquiza, Parana. 
Dynobatis paranensis, p. 263, pi. xiv, figs. 1-4, Tertiary of Parana ; 
rectangularis, p. 264, pi. xv, fig. 1, Tertiary of Parana, and gaudryi, p. 265, 
pi. xv, fig, 2, Chalk ?, n. spp. (foss.), Larrazet, t. c. 
Acanthobatis eximia, n. sp. (foss.), id. ibid. p. 265, pis. xv, fig. 3, and 
xvi, fig. 1, Molasse of Sagries, Gard, France. 
Discobatis , n . g. (Trygonidce). Tail shorter than the disk, cylindrical, 
without fin or spine, thick at the base and tapering to the apex ; disk cir- 
cular ; body quite smooth, veutrals without notch ; teeth small aud closely 
impacted, as in the Trygonulce generally. D. marginipinnis 1 n. sp. 
Miklouho-Maclay & Macleay, P. Linn. Soc. N. S. W. x, p. 676, Pacific 
Ocean, near the Admiralty Islands. 
Pteroplatea australis , n. sp., Ramsay & Douglas-Ogilby, P. Linn. 
Soc. N. S. W. x, p. 575, N. S. Wales. 
Myliobatis punctatus, n. sp., Miklouho-Maclay & Macleay, P. Linn. 
Soc. N. S. W. x, p. 675, pi. xlvi, figs. 1-6, S. Pacific. M. curvipalatus 
n. sp. (foss.), Lydekker, Pal. Ind. (10) iii, p. 244, pi. xxxv, fig. 4, Num- 
mulites of Kach. 
Rhinoptera encenadce , n. sp., Rosa Smith, P. U. S. Nat. Mus. 1886 
p. 220, Lower California. 
