304 RECOEJDS OF THE ACSTKALIAN MUSEUM. 



TI.^HlSTOKICAL. 



Ill 1800 Buchanan-^ described and figured the first recorded species of 

 ( hirhiiliuDi, whicli lie called OiirJiidltdii typJuv, an aiiimal living on the 

 leaves ol" Tiji^lni elephantina in the fresh or brackish water swamps of 

 Jieugal. 



Ciivier^ in 1804 described liis ( hirhidi nm ^eronli, an essentially marine 

 form found on the rocks of the sea shore b}' Peroii at Mauritius. 

 Blainville^, who was confused by the apparent biological differences between 

 the terrestrial species of Buchanan and the marine species of Cuvier, sought 

 to place Otn'ln'(h'niii peroiiii among the Cyclobranchs. Lamarck" has 

 accepted Cuvier's taxononi}-, while Ferussac" and Rang*^ followed that of 

 Blainville. Fei-ussac proposed a division of the group, allotting the marine 

 species to his new genus Onchis, leaving the terrestrial or fresh water 

 forms to be accommodated by Ouchidinm, of which the type was essentially 

 teri-estrial. 



Blainville, however, removed Ferussac's name, and replaced it by that 

 of Peroiita, and at the same time re-named Cuvier's species reruiiin mdnr- 

 itiaiui ; thus again establishing two groups, leaving, as Fernssac had, the 

 terrestrial species to Onchidluni, but allotting the marine species to his new 

 genus Peroiila. Delle Chiaje^ in 1825 followed Blainville and allotted his 

 MediteiTanean species Partheuopeia to FenDiia. 



In 1830 Cuvieri"^ essayed to establish a systematic position for the 

 group of Onchides as they were then known, and placed them at the head 

 of the Aquatic Pulnionates. It must be noted, that while Cuvier was 

 guided by his masterly knowledge of anatomy, and that the position of 

 the external openings were found by him to agree with Buchanan's species, 

 he has left to posterity an anatomical figure reversely drawn in part, as 

 was noted by Stoliczkaii. This has no doubt been responsible for some 

 confusion of genera and species. 



The voyage of the " Coquille " brought to notice a supposed new 

 example of Onchidiida' recoi-ded by Lesson'- in 1828 under the name of 

 HitrJidHiiJuiid (iiic/ii(hiiilc!<, a very large sub-marine species from Conception 

 Bay, C/hili. Lesson, however, while offering a ligui-e and description of 

 his species, is not credited with regard since his specimen was not preserved 

 and has not again been seen. 



3 Buchanan— Trans. Linn. Soc, v., 1800, p. 132, pi. v., figs. 1-3. 



* Cuvier — Ann. dn Musoe, v., 1804, p. 37. 



'•> Blainville — Journal de Physique, Dec, 1817; Diet. Sci. Nat., x.xiii., 1818, 

 p. 501. 



'' Ijaiuarck — lli.st. Auiiu. sans Verts., 1st ed., vi., L', 1822, p. 16. 



^ Fi'-russae — Tabl. Syst., pi. xx.xi., 1821. 



'^ Rang— Manual I'Hist. Nat. Mollusques, 1825». p 152. 



" Delle Chiaje — Descrizione e notomia degli animalia sen/,a vertelire della 

 Sieilia, ii., 1825, p. 13, pi. xlvi. 



'" Cuvier — Le Regne Animal, ed. 1830, t. iii.. p. 46. 



" Stoliczka — Journ. Asiat. Soc. Benijfal, xxxviii., ]>t. 2, No. 2, 186W, p. ".»'.». 



'-Lesson — Voy.de la " Coquille". Zool., 1828, p. 2%; H^ure in Adaius — Gen. 

 Kcc. Moll., iii., 1858, pi. Ixxxi., ti^,'. 4, 4a, j). 235. 



