Prof. F. M'Coy on new Species of Fossil Volutes. 375 



The following is a synoptical table of the genera of the family 

 Proteida : — 



Feet four or only two anterior cues. Eyes small, and without lids. 

 "Vertebrae biconcave. 



'two; branchiae persistent Siren. 



much elongated. 



Body"^ 



aucneiungaieu, , ^^^ no persistent branchi* ; 



cylmdncal ; feet^ ^^^ ^„^^^, ^^^^^^^^ 



very small, reet 



two nuchal fissures Amphiuma. 



moderately elon- 

 gated, more or 



l^four; branchiae persistent ... Proteus. 



persistent throughout life; four 

 toes on all the feet Menobranchus. 



persistent throughout life, in 

 the form of long tufts ; four 



less depressed.^ toes on fore feet, five on 



Feet four. Bran- 

 --chice 



hind feet Sirenodon. 



in early stages only ; four toes 

 on fore feet, five on hind 

 '^^ feet Cryptobranchus. 



XL VI I. — On some new Species of Fossil Volutes from the Ter- 

 tiary Beds near Melbourne. By Frederick M'Coy, Professor 

 of Natural Science in the Melbourne University, Government 

 Palaeontologist to the Geological Survey, &c. 



Figures 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. 



Valuta 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 l^ 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- 



