32 
The mouth is placed at the anterior and superior part of the ani- 
mal, between two thickish horizontal lips. The labial tentacles are 
two on each side, rather long, lanceolate, and slightly pectinated. The 
anus is placed posteriorly and superiorly between the gills, and just 
about the posterior adductor muscle. 
The so-called “foot” is composed of two portions, an upper and 
quadrilateral (properly the abdomen), and a lower pointed part (the 
true foot), the two being set at right angles to one another. 
The first portion is sharp-edged and slightly pectinated posteriorly, 
marked by a groove bounded by two folded lips anteriorly. The 
second portion is slightly pectinated along its lower edge, pointed 
anteriorly, prolonged behind into a curved process, where it joims the 
superior portion. 
Visceral mass.—The mouth opens by a very short cesophagus into 
a wide pyriform stomach, surrounded by a dark dendritic liver. The 
stomach narrows into a long intestine, which descends for the whole 
length of the abdomen, and forms one or two loops in the substance 
of the generative gland; then passes up again above the stomach, 
penetrates the heart, and passing between the two small lateral mus- 
cles of the foot, terminates in the anus. 
Fig. 1. View of the animal with the right valve of the shell re- 
moved, and the right lobe of the mantle turned back. a, mouth ; 
b, anus; c¢, filamentous appendages of mantle; d, gill; e, grooved 
superior part of foot. 
Fig. 2. View of the animal from behind, with the valves separated. 
Letters as before. 
Fig. 3. Visceral cavity laid open. a, stomach, surrounded by the 
liver; 3, intestine; c, heart; d, generative gland. 
March 27, 1849. 
William Yarrell, Esq., Vice-President, in the Chair. 
The Secretary communicated to the Meeting a letter which had 
been addressed to the Council by Sir Roderick Impey Murchison, 
G.C.St.S., &e. &e., in which he gave the gratifying intelligence of 
his having been assured by the Count Kisselef, Minister of the 
Imperial Domains of Russia, that if it was possible to obtain another 
Male Aurochs, it would afford his Excellency the greatest pleasure to 
receive the high command of His Majesty the Emperor for its 
transmission to the Society. Although the communication of Count 
Kisselef did not amount to an absolute promise, Sir Roderick ex- 
pressed his conviction, that with so earnest an intention of assisting 
the Society on the part of the confidential Minister of his Imperial 
