90 



dead, with a black foam at its mouth ; it then suddenly started up 

 and darted off into the bush. In about twenty minutes it returned, 

 when the mouth was observed to be marked with green from some 

 herb it had been eating. It appeared quite recovered, and imme- 

 diately attacked the snake with even more fury than before. This 

 combat lasted about six minutes, when the Mungoos got the snake 

 by the neck, killed it, and severed its head from its body. The snake 

 was upwards of five feet long. 



3. Descriptions of New Shells, from the Cumingian 

 Collection. By Arthur Adams, F.L.S. etc. 



(MoUusca, PI. XV. XVI.) 



1. Myochama Stutchburyi, A.Adams (PI. XV. fig.4). M. testa 

 incequivahi, subcequilaterali, rosea ; valva dextra affixa, sinistra 

 convexiuscula, apice acuto, antice recurvo, longitudinaliter 

 costata, transverse oblique plicata ; costis squammulato-nodo- 

 sis ; latere antico rotundato, posfico oblique truncato. 



Hob. Australia. 



This species, named in honour of the founder of the genus, differs 

 from the type M. anomioides m being longitudinally ribbed radiately 

 from the apex, and in the apex of the umbones being sharp, pro- 

 duced, and flattened. 



2. Myochama Keppelliana, A. Adams (PL XV. fig. 1). 

 M. testa incequivalvi, cequilaterali, carnea ; valva dextra affixa, 

 sinistra convexa, apice producto, acuto, injlexo, lonyitudmaliter 

 radiatim costata ; costis nonnullis dichotomis, squammtdis ro- 

 tundatis, arcuatis, confertis, ornatis ; latere postico oblique 

 truncato, antico rotundato. 



Hab. Bass's Straits, deep water. 



This species, found by the Hon. Captain Keppell, differs from the 

 type in the ribs radiating regularly from the apex and not being 

 nodosely wrinkled, but furnished with regular rounded arcuated 

 scaly tubercles. 



3. Crassatella obesa, a. Adams (PI. XVI. fig. 2). C. testa 

 cequivalvi, incequilaterali, crassa, gibbosa, epidermide rufo-fusca 

 sericea obtecta, transverse valde plicata, plicis prominentibus, 

 ad marginem ventralem evanidis ; lumda inipressa lanceolata ; 

 latere postico subproducto, angulato, margine truncato; latere 

 antico gibboso, margine rotundato. 



Hab. New Zealand, deep water (ilfr. Strange). 



This species somewhat resembles C. lapidea, Reeve, but it is not 

 rayed, nor beaked so strongly posteriorly, and the valves are much 

 more gibbous and very strongly transversely plicate. 



4. Crassatella Cumingii, A. Adams (PI. XVI. fig. 1). C. 

 testa cequivalvi, incequilaterali, subtrigonali, epidermide fusca 

 radiatim striata obtecta, transverse concentrice valde plicata. 



