100 Dr. Meyen on the Digestive Apparatus of Infusoria. 



Delectus Anhnalium Articulatorum, by Spix and Martius j 

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

 Fauna Boreali-Americana ; Coleopteres de Mexique, parChe- 

 vrolat [Omocerus N. G.) ; Dalmann's Analecta Entomologica, 



(Cfomicata) ; Guerin and Percheron, Genres des Insectes, 

 col. plate L2; Sahlberg's Pereculi Entomograj)hici Cassida; 

 Der Xaturforscher, 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 Bcauvois also contains the figures 

 of some species from the kingdom of Oware. 



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

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

 logisches Magazin,18l7 — 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. Mesomphalia gibbosa. 1 a. The same in profile ; 11. Labrum; md. Man- 

 dible; mx. Maxilla; 1 2. Labium ; a. Antenna; st. Sternum; t. Tarsus; 

 u. Unguis. 



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

 in two positions ; mx. Maxilla; 12. Labium; a. Antenna. 



3. Selenis perforata. 3 a. The same in profile; / 1. Labrum; md. Man- 

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



4. Tauroma Taurus. 4 a. The same in profile; / 1. Labrum; md. 

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

 lingua) ; a. Antenna. 



5. Dcsmonota jilatynota. 5 a. The same in profile ; / 1. Labrum; md. 

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



6. Batonota bldens. 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 I take of forwarding to you a short 



memoir on the digestive apparatus of the Infusoria, which I 



request you will publish in your highly valuable journal. My 



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



