232 ANNULATA. 
In addition, there are oblique bands running from the sides to the mid- 
ventral line. 
Peripatus has little more skeleton than the Annelida, the scattered 
cuticular spines forming the nearest approach to an exoskeleton. 
Fig. 153.—A DIssECTION OF PERIPATUS CAPENSIS FROM 
THE DoRSAL SURFACE. 
(After BALFour.) 
Tentacle. - 
Oral Papilla. 
Brain. 
Slime Gland. Salivary 
Gland 
: 
Feet. 4 Intestine. 
———— 
=o 
SSeS 
FF 
=—= 
Nerve Cord == 
(paired). . ec ¢ 
Last Crural 
Glnd: Nephridium. 
The ccelom is not present as a body-cavity, but is in the adult only 
represented by the cavities of the gonads and those of the nephridia. 
The actual body-cavity is a venous blood-space which thus contains blood 
and belongs to the blood-vascular system. Hence, as in the lobster 
and the cockroach, it leads directly into the dorsal heart by paired 
ostia or valves. The heart is itself a long tube lying dorsally, extending 
nearly the length of the body. It is surrounded by a fericardial sinus, 
as in the lobster. 
