1897.] SAYIGNT'S ' DESCEIPTIOJT DE L'iGTPTE.' 287 



" M. Isidore Geoffroy, son fils, vient de douner de ces descriptions 

 une redaction generale qui le j^resente avec ordre et clarte." 

 It seems, therefore, that 1827 also is the correct date for this 

 part of the Fishes. 



Vol. I., part 2, Ascidiens by J. C. Savigny, pp. 1-58. 



The date of this part is of no consequence, as all the specific 

 names were issued by Savigny in 1816. 



YoL. I., part 3, Annelids by .J. C. Savigny, pp. 1-128. This was 

 reviewed in the Gott. r/elehr. Anz. (1827, p. 69-5). Engelmann, 

 Bibl. Hist. Nat. p. 550, gives the date as 1820, but the review 

 quoted above leaves little doubt that 1822 is the correct 

 date. 

 Vol. I., part 4, Explication des Planches by V. Audouin. These 

 consist of Mollusca (pp. 7-56), Annelids (57-76), Crustacea 

 (77-98), Arachnids (99-186), Insects (187-202), Echinoderms 

 (203-212), Zoophytes (213-214), Ascidians (215-224), Polypes 

 (225-244), Oiseaux (251-318). Eugelmami, Bihl. Hist. Nat. 

 p. 340, says that the Moll., Ann., Crust., Arach., Ins., Echin., 

 and Ascid. were issued as fo. Paris, 1826. On p. 550 he 

 says the descriptions of the Aracbnida appeared fo. Paris, 

 1812 ; a statement quite inexplicable to me and considered by 

 me as a mistake. E. S. Leuckart, ' Breves Anim. quorumdam,' 

 1828, p. 15, refers to the plates of the Gasteropoda as 1812; 

 and it may be that Engelmann's reference refers to the plates, 

 and not the descriptions, of the Aracbnida. 



At the beginning of part 4 of Vol. I. there is a letter 

 dated 19 Mars 1825, stating that the work of finishing had 

 been entrusted to V. Audouin on account of the ill-health of 

 Savigny. This is conclusive. See also Ann. Soc. Entom. France, 

 xi., 1842, p. 99, where it is definitely stated that in 1826 

 the Government selected Audouin to give the descriptions to 

 the plates of Mollusca and articulated animals. Dr. John 

 Anderson tells me that he has ascertained that Savigny's 

 sight failed him\ and that no manuscripts of any kind were 

 handed over to Audouin, so that Audouin had to begin de 

 novo. 



In the Eeprint of the Oiseaux by the Willughby Society, 

 the editor comes to the conclusion that it was published " not 

 earlier than 1826." 



In the 8vo edition of Savigny's ' Egypte,' the portion of 

 the Natural History under consideration occupies vols. xxii. 

 1827, and xxiii. 1828. 



Eerussac, Bull. 8ci. Nat. xix., 1829, p. 336, and xx., 1830, 

 pp. 147 & 319, may be consulted with advantage. 



I have no doubt myself that all the parts enumerated above 

 may be safely regarded as dated 1826. 

 Vol. II. Mammiferes by GeofEroy, pp. 99-144, This is reviewed 



1 P. Caillaud, Voy. a Meroe, iv. 1827, p. 271. 



