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 Analecta 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 AYork of Palisot Beauvois also contains the figures 

 of some species from the kingdom of Oware. 



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

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

 logisches Magazin^lSl? — 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 SAvayed by the 

 vegetation on which the dilFerent species feed. 



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



REFERENCE TO PLATE IV. 



1. Mesomphalia gibhosa. 1 a. The same in profile; / 1. Labium; md. Man- 

 dible ; mx. Maxilla ; / 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. Sele7ds perforata. 3 a. The same in profile; / 1. Labriim ; md. Man- 

 dible ; mx. Maxilla ; / 2. Labium ; a. Antenna. 



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

 Mandible; mx. Maxilla; / 2. Labium (with the large fleshy internal 

 lingua) ; a. Antenna. 



5. Desmonota flatynota. 5 a. The same in profile; / 1. Labrum; md. 

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



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

 Maxilla. 4 2. Labium ; a. Antenna ; st. Sternum. 



XII. — Some Observations on the Digestive Apjparatus 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 pubhsh in your highly valuable journal. My 



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



