142 BRITISH ENTOMOSTRACA. 



Bosc, in his ' Hist. Nat. des Crust,' edit. Buffon, par 

 Deterville, 1802, gives a very interesting account of this 

 genus, as does also Latreille, in his ' Hist. Nat. des Crust, 

 et Ins./ edit. Buffon, par Sonnini, 1802; but they only 

 mention Midler's species. 



Ramdohr in 1805 published his little work on the 

 Monoculi, * in which he gives some very excellent details 

 concerning the anatomy of the Cypris, accompanied by 

 some very good figures ; but his work does not seem to 

 be known to almost any of the succeeding naturalists 

 who have written upon the Cypris. He only describes 

 in this work the Cyjjris striyata of Miiller; but in 1808, 

 in a paper in the ' Magaz. Gesell. Nat. Berlin,' he de- 

 scribes at considerable length three additional species 

 which had not been noticed before. 



M. Daudebart de Ferussac fils, in a memoir in the 

 ' Ann. du Mus. d'Hist. Nat.,' vii, 1806, describes one new 

 species, and Risso, in his ' Hist. Nat. des Crust, des Env. 

 de Nice,' 1816, two others; but though these additions 

 were made to the number of known species, and although 

 Latreille, in Cuvier's ' Regne Animal,' 1817, and Lamarck, 

 in his ' Hist. Nat. des Anim. sans Vert.,' 1818, give a 

 variety of details relating to the genus generally, little real 

 knowledge concerning the anatomy of the inhabitants of 

 the tiny shells was conveyed to us (for Ramdohr's work 

 and paper seem to have attracted scarcely any notice), 

 till M. Straus published his admirable paper on the 

 genus Cypris, in the seventh volume of the ' Mem. du 

 Mus. d'Hist. Nat.,' 1821 ; containing a most elaborate 

 ;m;itomieal description of the genus, with a notice, and 

 figures of three new species, not described by Miiller. 



About the same period as Straus read his paper before 

 the Academy, appeared ,) urine's splendid work on the 

 Monoculi, replete with interesting details of the genus 

 generally, and with beautiful figures of eighteen species. 

 But we find no reference made by either of these authors 

 to the previous labours of Ramdohr. 



" P>ryt. /.in- Naturg. Dents. Mouoc. Artcn, 



