100 Dr. Meyen on the Digestive Apparatus of Infusoria. 



Delectus Animalium Articulatorum, by Spix and Martius ; 

 Voyage de Humboldt et Bonpland, Premier Volume; Kirby's 

 Fauna Boreali-Americana ; Coleopteres de Mexique, par Che- 

 vrolat [Omocerus N. G.) ; Dalmann^s iVnalecta Entomologica, 

 (C.fornicata); Guerin and Percheron, Genres des Insectes, 

 col. plate 12; Sahlberg^s Pereculi Entomographici Cassida; 

 Der Naturforscher^ Stuck 6 and 9, and Fuessly^s Archives. 



Africa — Refer to King's Bericht on the Coleoptera of Ma- 

 dagascar ; Insectorum Enumeratio Eleutheratorum, by Gold- 

 fuss. The work of Palisot Beauvois also contains the figures 

 of some species from the kingdom of Ovvare. 



Asia — Consult Brulle's Voyage in the Morea ; Hope's New 

 Species in Gray's Zoological Miscellany ; Wiedemann's Zoo- 

 logisches Magazin^l8l7 — 1823 ; Perty's Synopsis Coleoptero- 

 rum. Falderman records only a single species^ namely, Cas- 

 sida bella, in his Fauna Entomologica Trans-Caucasica. It 

 seems probable that Cassida may be greatly swayed by the 

 vegetation on which the different species feed. 



New Holland — Bois Duval's Voyage de L' Astrolabe. 



REFERENCE TO PLATE IV. 



1. Mesom2)halia gibhosa. 1 a. The same in profile; l\. Labrum; md. Man- 

 dible; mx. Maxilla; 12, Labium; a. Antenna: st. Sternum: t. Tarsus; 

 u. Unguis. 



2. DolicJiotoma Chloris. 2 a. The same in profile ; md. Mandible seen 

 in two positions ; vix. Maxilla ; / 2. Labium ; a. Antenna. 



3. Seleiiis jierforata. 3 a. The same in profile; / 1. Labrum; 7nd. Man- 

 dible ^ mx. Maxilla; 12. Labium; a. Antenna. 



4. Tauroma Taurus. A a. The same in profile; I \. Labrum; md. 

 Mandible; mx. Maxilla; 12. Labium (with the large fleshy internal 

 lingua) ; a. Antenna. 



5. Desmonota platijnota . 5 a. The same in profile ; I \. Labrmii ; md. 

 Mandible; mx. Maxilla; 12. Labium (with the internal lingua); a. Antenna. 



6. Batonota hidens. 6 a. The same in profile ; md. Mandible ; mx. 

 Maxilla. 12. Labium; a. Antenna; st. Sternum. 



XII. — Some Observations on the Digestive Apparatus of Infu- 

 soria."^ By Dr. J. Meyen, Prof. Bot. University of Berlin. 



To Richard Taylor, Esq. 



Sir, 



Excuse the liberty 1 take of forwarding to you a short 



memoir on the digestive apparatus of the Infusoria, which I 



request you will pubhsh in your highly valuable journal. My 



* Communicated by the Author to, and translated for this Journal. 



