316 Notices of Memoirs—A. Smith Woodward—On Selachians. 
and the Bruxellian of Woluwe St. Lambert. The New Zealand species 
may be distinguished from this one by its larger size, more acuml- 
nate apex, and by aslight lateral projection from the base of the 
crown. The Napier series, from which it was obtained, occupies 
a much higher horizon than the Baltringen Molasse; by the Survey 
they are considered to be the Upper beds of the Pliocene, whilst 
Professor Hutton tabulates them as Pleistocene. They underlie the 
dispersed gravels and peat mosses, the latter containing the bones 
of the recently extinct Moa. Though the existence of Scymnus is 
unknown in the southern seas, its fossil remains in these beds 
indicate that its extinction has happened during comparatively recent 
times. It is desirable that the species should be distinguished, and 
I suggest as the nomen triviale, Scymnus acutus. 
REFERENCES TO SPECIES PREVIOUSLY DESCRIBED. 
Scymnus triangularis. J. Probst. Wiirth. Jahresb. v. xxxv. p. 174, pl. iii. figs. 
35, 86 (1879). Molasse, Baltringen, Wurtemberg. 
S. majort. R. Lawley. Nuovi Studi sopra ai Pesci, etc., p. 38, pl. i. fig. 17 (1876). 
Pliocene, Tuscany. 
S. trituratus. J. Probst. Wirth. Jahresb. v. xxxv. p. 176 (1879). 
F. Noetling. Sitzb. Ges. Naturf. Freunde Berlin, 1886, p. 17 =Corax tritu- 
ratus. 
T. C. Winkler. Archiv. Mus. Teyler, v. iv. fase. i. p. 27, pl. ii. fig. 13 (1874). 
Bruxellian, Woluwe St. Lambert, near Brussels. 
CHEVINEDGE, Hauirax. 
IN @ ce Gre SS @ 7b Vie @ aes S- 
NG 
I.—PatmonroLogicaL Contrisutions to SenacHtAN Morpuotoey.! 
By A. Surra Woopwarp, F.Z.S., F.G.S. 
Y\HE author discussed two features in Selachian anatomy presented 
by fossils from the Chalk of Mount Lebanon. An examination of 
the so-called Scyllium Sahel-Alme, which is certainly a member of 
the Scylliide, shows that the lateral line of this fish was supported 
by a series of half-rings, exactly like those met with in Squaloraja 
and the Chimzroids—a character apparently hitherto unrecognized 
among undoubted Selachii. The eanal of the lateral line in the 
Cretaceous fossil was thus presumably an open groove; and only 
two living Sharks, Echinorhinus and Chlamydoselachus, both com- 
paratively primitive, have yet been described as exhibiting such a 
condition. ‘The second discussion related to the pelvic cartilage of 
Cyclobatis, one of the Trygonide. It had long been recognized that 
the pair of anterior processes were the homologues of the so-called 
“prepubics,” and the author now attempted to show that the large 
bent, lateral processes were dorsally placed, and might thus be 
regarded as “iliac.” It seems not improbable that the reflexed distal 
extremities of the latter originally supported the metapterygia of 
the pectoral fins, in the same manner as the propterygia were con- 
nected with the antorbital (post-palatine) cartilages. 
1 Proceedings of Zoological Society of London, Feb. 21, 1888. 
