1894.] 



MICROSCOPICAL JOURNAL. 



115 



(Cephalis commonly large, with one or more horns). 



AcantJiocorys. 

 No ribs in thorax. Peristome with free terminal feet. 

 (Cephalis well developed with horn). 



Anthocyrtoma. 



Anthocyrtis. 



Anthocyrtium. 



A7ithocyrtidiu7n. 



Carpocanium. 



No radial apophy 



Six feet 



Six feet 



Twelve feet, or more 



Feet outside constricted peristome 



(Cephalis hidden. No horn). 



32.— Family: SETHOCYRTIDA. 

 ses. 



MOUTH OF THORAX OPEN. 

 Thorax conical or campanulate. Sethoconiis. 



Thorax cylindrical or ovate, with truncate, constricted 

 or tubular mouth. 



One horn. Mouth simple. Sethocyrtis. 



One horn. Mouth tubuhar. Sethocorys. 



Two horns or a bunch. Lophophieiia. 



No horn. Dictyocephalus. 



MOUTH OF THORAX CLOSED. 

 Horn. JSethocapsa. 



No horn. Dicolocapsa. 



SECTION C. CEPHALIS THORAX AND ABDOMEN. 

 (3 JOINTED SHELL). 



33.— Family: PODOCYRTIDA. Three radial apophy- 

 ses. 



MOUTH OPEN. 

 Three free limbs or wings on thorax (partly on abdo- 

 men). 



No free external apophyses on abdomen. 

 Three wings of thorax solid. Pterocorys. 



Free apophyses on abdomen. 

 Three ribs prolonged into 3 feet. Ribs and feet solid. 



Theopodiitm. 



