BY E. J. GODDARD. 331 



Surrounding the diverticula of the stomach and so lying 

 between them and the last pair of crop caeca, is a very strongly 

 developed series of blood-channels. This great development, 

 together with the ultimate connection of the channels with the 

 stomach epithelium, points to the stomach as being functional 

 both in digestion and absorption. 



The wall of the intestine consists of a much folded epithelium 

 of columnar cells, external to which are circularly arranged 

 muscle-fibres. The blood-channels previously mentioned in con- 

 nection with the stomach are not present in the immediate 

 neighbourhood of the intestine, and so probably the rectum is 

 connected solely with the function of egestion. 



Reproductive organs. — The species is protandrous. In examin- 

 ing sections of young individuals which were attached to an 

 adult, it was found that mature testes were present but ova 

 were not. In the case of one adult specimen which had a 

 number of young individuals attached to its ventral surface, it 

 was found that the testes were mature, the organ appearing as a 

 hollow chamber in which sperm groups were abundant. No ova 

 were present in the ovary. Another adult specimen showed the 

 testes as solid capsular masses in which there was a stroma-like 

 matrix containing small blood-channels and groups of sperm- 

 elements. In the ovarial chambers were present a great number 

 of ova. 



Female organs. — The ovaries are a pair of asymmetrical sacs 

 extending backwards from the genital aperture in the median 

 lacuna, ventral to the digestive tube. The vagina, which is the 

 most anterior part of the female apparatus common to both sacs, 

 appears to be filled with a mass of connective tissue previous to 

 the laying of the eggs. It extends as far as the first pair of crop- 

 cseca, lying in the ventral lacuna which, in this region, is narrow 

 and bounded laterally by groups of strongly developed dorsi- 

 ventral muscles which extend down the sides of the proboscis- 

 sac. Opposite the point of origin of the first pair of crop-caeca 

 the vagina passes into the anterior part of the ovaries. Here 



