Nr. 11 ANATOMICAL STUDIES ON ANELASMA AND SCALPELLUM 



thorax is occupied by the large testes; these are shaped like two 

 dusters of grapes, and lie tightly packed together, one on each side 

 of the sagittal plane. 



a. c. 



Textfig. II. Transverse sections of the thorax of a fullgrown Anelasma 

 squalicola. a at the lower side of the proboscis (the mantle is omitted), 

 b on the level with the atrii, c just below the base of the penis. The 

 muscles red. [X 10]. D = dorsal, V = ventral side of the animal. A = 

 atrium; i. = digestive intestine; i. g. — digestive glands; p. = proctodæum; 

 m. c. = mantle cavity; od. oviduct; T. = testes. 



