1893.] MICROSCOPICAL JOURNAL. 307 



II. — NO B.\SAL FEET. 



One horn on ai)ex. Circo»}^yris. 



No horn on apex. Dictyospyris. 



22.— Family: PHARMOSPYRIDA. Cephalis and thorax 

 or second joint. No ajtical ciipohi. 



A. — THREE BASAL FEETT. 



One horn on apex. " Acrospyris. 



B. — NUMEROUS BASAL FEET. 



One horn on apex. Pdiagnspyris. 



No horn on apex. Desmospyris. 



23.— Family: ANDROSPYPJDA. Cephali.s and thorax. Ce- 

 phalis with apical cupola. 

 Shell spherical. Sphaerospyris. 



VL — Cephalis multilocular and lobate. 



24.— Family: CANNOBOTRYIDA. Cephalis only. 

 No tubes on cephalis. Botnjopera. 



25.— Family: LITHOBOTRYIDA. Cephalis and thorax. 



A. — MOUTH OF THORAX OPEN. 



No tubes on cephalis. Botryople. 



B. — MOUTH OF THORAX CLOSED, 



Tubes on cephalis. Lithobotrys. 



No tubes on cephalis. Botryocella. 



26.— Family: RYLOBOTRYIDA. Cephalis, thorax and ab- 

 domen. 

 No tubes on cephalis. Mouth of abdomen closed. Botryocampe. 



{To be continued.) 



A New Method of Presen'ing and Mounting Specimens. 



By A. HALY, 

 COLOMBO, CEYLON. 



{Continued from page 276.) 



I now come to a very difficult subject: What is the action 

 of the gum and glycerine ? I have long thought, that the gum 

 was the color pre.server, and that the glycerine acted first by de- 

 hydrating the animal and then by excluding air and water. I 

 was led to this conclusion by the belief that the addition of 



