CHONDROPTERYGII. 
Pisces 13 
Petalodopsis , g. n. (foss.), for P. tripartite, sp. n., Davis, l. c. p. 499, 
pi. lx. fig. 6. 
Polyrrhizodus colii , p. 502, figs. 9 & 10, elongatus, p. 503, fig. 1G, smu- 
osus , p. 504, figs. 11-13, attenuatus, p. 505, fig. 14, constrictus, p. 506, fig. 15, 
spp. nn. (foss.), id. 1. c. pi. lx. 
Chomalodus acutus, sp. n. (foss.), id. 1. c. p. 509, pi. lxi. fig. 2. 
Ctenopetalus crcnatus, sp. n. (foss.), id. 1. c. p. 513, pi. lxi. fig. 9. 
Iiarpacodus clavatus , sp. n. (foss.), id. 1. c. p. 515, pi. lxi. fig. 11. 
Batoidei. 
Bois-Reymond, E. du. Ueber sekundar-elektromotorische Erschein- 
ungen an Muskeln, Nerven und elektrischen Organen. Biol. Cen- 
tralbl. iii. pp. 537-540. (Extract.) 
Ciaccio, G. Y. Osservazioni istologische intorno alia terminazione delle 
fibre nervose motive ne’ muscoli striati delle Torpedini, del Topo Casa- 
lingo et del Ratto Albino. Mem. Acc. Bologn. iv. pp. 821-825, 
pis. i. & ii. ; also J. Microgr. vii. pp. 38-41. 
Eisig, H. Dient das elektrische Organ dem Torpedo nur als yertheidi- 
gungs, — oder aucli als Angriffswaffe ? Kosmos, xiii. pp. 129 & 130. 
Fritsch, G. Bericht fiber die Fortsetzung der Untersuchungen an elek- 
trischen Fischeu. Beitrage zur Embryologie von Torpedo. SB.Ak. 
Berl. 1883, pp. 205-209, pi. iv. 
. Report on a Journey for the Investigation of the Torpedinei 
extant in the Museums of England and Holland. Ann. N. II. (5) 
xi. pp. 58-61. 
Jolyet, F. Sur la Torpille Electrique. M<5m. Soc. Bord. v. pp. 371-374. 
Kronecker, H., & Nicolaides, R. Ueber die Erregung der Gefass- 
nervencentren durch Summation elektrischer Reize. Arch. Anat. 
Phys. (Phys.) 1883, pp. 27-42, pis. i. & ii. 
Stassano, H. Nouvelles recherches physiologiques sur la Torpille. C. R. 
xevi. pp. 1436-1439. 
Weyl, T. Physiologische und chemische Studien an Torpedo. Arch. 
Anat. Phys. (Phys.) 1883, pp. 117-129. Festschrift, pp. 105-126. 
Pristis bassanii, sp. n. (foss.), Zigno, Mem. 1st. yenet. xxi. pt. 3, p. 783, 
pi. xv. figs. 13-15, Eocene of Venetia. 
Hemipristis bidens, Quenst. (foss.). Teeth figured ; Schlosser, Palseon- 
togr. xxviii. p. 59. 
Hemipristis curvatus, sp. n. (foss.), Dames, SB. Ak. Berl. 1883, p. 140, 
pi. iii. fig. 4, Tertiary of the Island of Birket-el-Qurfin. 
Propristis, g. n. (foss.), for P. scJwmnfurthi , sp. n., Dames, l. c. p. 136, 
pi. iii. figs. 1 & 2, Tertiary of the Island of Birket-el-Qurfin. 
Rliinobatus columnar, Bonap. Note by Steindachner, Denk. Ak. Wien, 
Ixv. p. 14. 
Rliinobatus glaucostigma , sp. n., Jordan & Gilbert, P. U. S. Nat. Mus. 
vi. p. 210, Mazatlan, Mexico. 
