Royal Societij. 499 



sembles in the style of sculpture T. uniophora. Gray. The form of 

 the scales on the ribs at once distinguishes it, however ; the shape 

 of the shell, especially the outline of the hind slope, is also very dif- 

 ferent. 



7. Chiton insculptus, A. Adams. C. testa oblonga, valde 

 elevatay valvis terminalibus cceterarumque areis lateralibus ra- 

 diatim costatis, costis granatis, granis transversis, subcon- 

 fertis, ad marginem obsoletis ; umbonibus carinatis ; valva ter- 

 minali antice umbonata ; areis centralibus longitudinaliter valde 

 liratis ; liris obsolete rugoso-granulatis. Coccineus, areis cen- 

 tralibus lineis nigro-fuscis duabus ornatis ; ligamento luteo- 



fusco fuscoque articulato squamulatOi squamulis Icevis, nitidisy 

 convexis. 

 Hab. New Zealand, on dead shells, deep water {Mr. Strange). 

 A beautifully sculptured species of a red colour, with two dark 

 parallel lines down the centre of the valves. n foboq 



8. Chiton muricatus, A. Adams. C. testa oblonga, in medio 

 valde elevatay nigro-fusco alboque variegata, valvis terminalibus 

 cceterarumque areis lateralibus radiatirri costatis ; costis granis 



sj^ elevatis acutis ornatis; valva terminali in medio umbonata; 

 V areis centralibus longitudinaliter valde liratis, umbonibus Icevi- 

 ^o!i bu^, elevatis, subproductis ; ligamento squaniulato ; squamulis 

 mucronatis, imbricatis, apicibus suberectis. 

 ^ab. Sydney, under stones, low water {Mr. Strange). 

 ^frThis species is remarkable for the somewhat triangular imbricate 

 scales of the ligament ending in sharp pointed mucrones ; the liga- 

 ment is tessellated with pale fuscous and dark brown ; the ribs on the 

 lateral areas are four, muricated with sharp granules. 



^ ,9. Chiton versicolor, A. Adams. C. testa oblongo-ovali, ele- 

 • vH vatiuscula, rufo, albo, fuscoque varie picta ; valvis obtusis, in 

 ,v, medio longitudinaliter sulcosis, umbonibus acutis subrostratis, 

 ^\ apicibus dejlexis ; valva terminali in medio umbonata ; liga- 

 ,-^\ mento tenuiter granoso-coriaceo rufo-fusco, macidis albis quin- 

 que ornato. 



Hab. Sydney, under stones, low water {Mr. Strange). 



A prettily variegated species, with the scales on the ligament mi- 

 nute, imbedded and not imbricate, and the entire upper surface of 

 the valves delicately shagreened. 

 ano III uwyijr 



ROYAL SOCIETY. 



March 2, 1854.— Professor Graham, V.P., in the Chair. 



1. "On the Growth of Land Shells." By E. J. Lowe, Esq., 

 F.G.S., F.R.A.S. &c. 



Perhaps the following observations on the growth of land shells 

 may contain sufficient information to prove interesting to the Royal 

 Society. Before describing them, however, a few introductory re- 

 marks will be necessary. Every individual experimented upon has 



32* 



