so* Royal Academy of Sciences of Paris. 



patre nomen Spiriferi inditum est, Trigonotretis nostris ad- 

 numerandum erit. In plerisque illius generis speciebus (v. g. 

 in S. resupifiafo, cuspidaio, minimo) corpus spiriforme omnino 

 desideratur ; nee desunt Terebratulae (proprie sic dictae) quae 

 hujusmodi appendicibus munitae videntur. Neque multuni 

 discrepat a Trigonotretis aliud ejiisdem auctoris genus nomine 

 Pentameri insignitum, de quo tunc agemus cum ad illius 

 specierum figuras pervenerimus. 



Trigonotreta Stokesii. n. 

 Ex insula Van Diemen Novae Hollandiae. In transitionis (?) 

 arenario. 



A supra laudato Carole Stokes nobiscum communicata. 



Trigonotreta speciosa (Terebratulites speciosus Schloth. 

 excluso tamen, ut nobis videtur, synonymo Leonh. Taschenh. 

 vol. vii. t. 2. f. 9.) Ex Eiffelia. 



The remaining new genera described and depicted in the 

 work are Trigonosemus {Molliisca. Brachyopoda, Terehratula:,) ; 

 Teratichthys (Pisces); Pharetritim [Mollusca. Pteropoda ?) ; 

 Spongus {Polypi. Or do incaiiis); and Homalonohcs (Ex crus- 

 taceorum ordine cui nomen TrilobittsF). 



We hope soon to see Centuria II. of these Icones fossilium 

 sectiles. 



LI. Proceedings of Learned Societies. 



ROYAL ACADEMY OF SCIENCES OF PARIS. 



June 8. — "IV/r DEYEUX gave a verbal report on the 

 -'-'^-'-« Manuel a V usage des pharmacicns by MM. 

 Chevalier and Idt. — A note from M. Gambart was read, con- 

 taining the pai'abolic elements of the last comet discovered by 

 him. — The Academy being informed by M. Arago that he now 

 has at Paris two living camelions, appointed a committee 

 which they requested to make experiments on the changes of 

 colour which the skin of these animals undergoes. — M. Giu- 

 seppe Cerini, an engineer of Milan, addressed a letter re- 

 specting a new machine for raising water for the irrigation of 

 lands. — Mr. D. Barry, staff-surgeon in the English service, 

 read a memoir on the motion of the blood in the veins. 



June 13. — The Academy received a memoir, in manuscript, 

 on the source of the heat of the thermal waters of Aix, by 

 M. Robert ; and some notes on the quarries of Montabusard, 

 and the gravel-pit of Montchene, near Chevilly, by M. Thion. 

 — M. Bosc gave a report on M. Duvau's new researches ou 

 the natural history of Aphides. — M. G. Libri, of Florence, 



laid 



