190 CALIFORNIA ACADEMY OF SCIENCES. 



Rouault (M.) Extrait du memoire sur les Trilobites 

 du Department d'llle et Vilaine. 



This paper was read Dec., 1846, and published in the Bull. Soc. Geol. 

 France, vol. 4, 1847, pp. 309-328. 



The author gives a general discussion of organization and structure of 

 the Trilobite especially of the eye. 



The text gives a list of 20 species with figures of the following: Trinu- 

 cleus pongerardi n. sp. Prinocheilus n. sp., P. verneuili n. sp. (Calymene) 

 Nileus beaumonti n. sp. Calymene tournemini n. sp. Phacops du jar dim 

 n. sp., P. downingice Murch., P. macrophthalmus Brong., P. longicaudatus 

 Zenker. 



Memoire sur 1'organization des Trilobites. 



In Institute de France Acad. Sci., vol. 27, 1848. 



The author remarks on the fossil Crustacea described by Guettard from 

 Angers in the year 1757: that Burmeister correctly indicated the genus of 

 the species described by Brongniart as Ogygia desmaresti, but it is to 

 be regretted that he gave it the new name of Illcenus giganteus inasmuch as 

 Brongniart had already named it. 



Memoire. 1. Sur la composition du test des 



Trilobites. 2. Sur les changement de formes dus a des 

 causes accidentelles, ce qui a pupermettre de confondre 

 des esp^ces differentes. 



In Bull. Soc. Geol. France, vol. 6, 1848, p. 67, pis. 1-2. 

 Ogygia brongniarti n. sp., 0. edwardsi n. sp. Illcenus desmaresti n. sp. 

 Calymene arago n. sp. Trinucleus. 



Note sur des nouvelles especes de fossiles 



decouvertes en Bretagne. 



In Bull. Soc. Geol. France, vol. 6, 1849, pp. 377-381. 

 Describes Lichas heberti n. sp. and gives figure. 



Sur les Trilobites et les terrains de transition 



de la Bretagne. 



In Bull. Soc. Geol. France, vol. 8, 1851, pp. 167-68. 



Memoire sur le terrains paleozoques des en- 

 virons de Rennes. 



In Bull. Soc. Geol. France, vol. 8, 1851, pp. 358-399. 



Calymene salteri n. sp., C. verneuili n. sp. Dalmannia vetillarti u. sp., 

 D. incerta n. sp. Placoparia tournemini n. sp. Ogygia desmaresti Brong. 

 Homalonotus brongniarti n. sp., H. barrandei n. sp., If. hausmanni n. sp., 

 H. legraverendi n. sp. Plcesiacomia kieneria n. sp. Proetushuhayi n. sp., 

 P. michelinin. sp. Cyphaspis. Beyrichia. Leperditian. g., L. brittan- 

 nica u. sp. Phacops. 



