286 



ENTEROPNEUSTA FROM THE SOUTH PACIFIC, 



Among the external points of difference between my Tornaria and the T. grena- 

 cheri figured by Spengel may be mentioned those connected with the position of the 



Fig. 4. Tentaculated Toenaeia feom Blanche Bay, New Beitain. Drawn from living larva (January 1895) x about 12. 

 Seen in dorsal view in A, ventral in B, lateral in C, and apical in D. The numbers serve for the 

 identification of the ciliated bands in the different views. The eyes in 2) are seen to lie within the limits 

 of the ventral area bordered by the ciliated band. In other species they tend to lie centrally between 

 the dorsal and ventral areas. 



a.m. Apical muscle-band. he'. Anterior body-cavity, et. (for sf.) Larval stomach, hg. Hind-gut (which 

 contracts and expands as in C). Ih. Larval heart (central blood-space), m. Mouth, oe. Larval oesophagus 

 (to which the anterior body-cavity adheres at two points), or.g. Oral groove, -pv. Pulsating vesicle (Pericardium, 

 Herzblase). Note its A -shape, lop. Water-pore (Sinistral proboscis -pore). 



