70 



of them consists of a large globular pouch and a rather long, coiled, 

 tubular diverticulum. 



18. Perichaeta sp. 



Flores: Kotting and Wukur. 

 Celebes: Luwu. 



In the isles of Flores and Celebes some examples of Perichaeta were 

 collected, which are not in a state of complete sexual maturity and 

 therefore could not be identified. Among them there is one specimen 

 from Flores with only a single spermatheca of a peculiar shape at 

 the rigth side of segment VII. It is a rather long , slender worm, with 

 the cephalic and caudal region much dilated; it measures about 120 

 mm. in lenght. The buccal cavity is everted, therefore the cephalic 

 lobe could not be recognized 



The setae are arranged in a continuous row, on a prominent ridge; 

 each segment shows one or two transverse grooves in front of and 

 behind the row, except on the clitellum. The male pores are situated 

 on prominent papillae. The dorsal pores commence in the interseg- 

 mental groove XII/XIII; they are also visible upon the clitellum. 



The 5th, 6th and 7th dissepiment are much thickened, connected 

 with each other by several muscle-fascicles and entirely hide the oeso- 

 phagus; the 8th and 9th septum are absent. 



The single spermatheca (PI. Ill fig. 28) is a rather large oval 

 pouch, with a long excretory duct and somewhat resembles a scotch 

 bagpipe ; a tubular diverticulum , coiled in a zigzag line, is connected 

 with it. The internal structure shows no particularity and agrees with 

 that of other Perichaeta-species. 



Megascolex Templeton. 



Setae numerous, arranged in a row round each segment, interrup- 

 ted in the median dorsal and ventral lines. Clitellum consisting of 

 more than three segments. Gizzard in front of segment VII. No in- 

 testinal coeca. Diffuse nephridial tufts present. 



Presently only three ') species of this genus are known with cer- 

 tainty, though I have no doubt, that before long more Perichaetidae 

 will prove to belong to it ; perhaps P. intermedia Bedd. 2 ) must be 



1) M. braehjcyclus Schmarda is a dubious species, there being nothing but the colour 

 to distinguish it. 



2) Quartl. Journ. Microsc. Science, Vol. XXX, p. 467. 



