Prof. F. M‘Coy on new Species of Fossil Volutes. 375 
The following is a synoptical table of the genera of the family 
Proteide :— 
Feet four or only two anterior ones. Eyes small, and without lids. 
Vertebre biconcave. 
much elongated, 
cylindrical ; feet< 
very smal]. Feet 
| two; branchiz persistent...... Siren. 
four; no persistent branchie ; 
two nuchal fissures .......+. Amphiuma. 
(four; branchiz persistent ... Proteus. 
| ( persistent throughout life; four 
Body’ toes on all the feet ......... Menobranchus. 
moderately elon- | persistent throughout life, in 
gated, more or the form of long tufts; four 
less depressed.{ toes on fore feet, five on 
Feet four. Bran- mind feete vee eesoreereenceees Sirenodon. 
CRI seek vecaeads 
| in early stages only; four toes 
on fore feet, five on hind 
DES ree benrBoeleaeencneatnetere Cryptobranchus. 
XLVII.—On some new Species of Fossil Volutes from the Ter- 
tiary Beds near Melbourne. By Frepuricx M‘Coy, Professor 
of Natural Science in the Melbourne University, Government 
Paleontologist to the Geological Survey, &c. 
Fieurss of the following species, collected by the Geological 
Survey under Mr. Selwyn, will shortly appear in the Decades I 
am preparing on the recent and fossil zoology of Victoria. As, 
for some years, I have prepared descriptions of nearly all the 
known fossils of the colony, I have been pressed to send descrip- 
tions of the more remarkable forms to the ‘ Annals’ for prelimi- 
nary publication. 
Voluta macroptera (M‘Coy). 
Shell fusiform until nearly adult, when the outer lip becomes 
dilated into a very large, thin-edged, triangular, flattened wing, 
the outer margin of which is slightly convex, the posterior mar- 
gin concave, running up halfway to the suture of the penultimate 
whorl in a slight channel; the approximately rectangular junc- 
tion of the outer and posterior margins broadly rounded. Apical 
angle about 55° in middle-aged specimens, and 35° in young 
ones 14 inch long. Spire with a concave outline of four rapidly 
enlarging whorls and a mammillary cap-shaped pullus of one 
and a half turn, the basal halfturn of the pullus less than half 
the width of the next succeeding turn of the spire, the remain- 
