400 MONILTGASTER HOUTENII. 



sal wall of the intestine. The nephridium communicates 

 with the exterior by a long and slender tube; but I have 

 not been able to detect its internal opening. 



About the vascular system I could observe, that the 

 dorsal vessel has divided in the 11*^ segment in two tu- 

 bes, lying quite close together, as in Aconthodrilus , Me- 

 gascolex ^) a. o. according to Beddard's observations. In 

 the 6tli — 11th segment there are transverse hearts, passing 

 from the dorsal trunk to the venti-al vessel; especially the 

 two posterior pairs of them are very large. The intestine 

 appears to be furnished in the \h^^ — 22»'! segment with 

 four different gizzards , because its muscular wall is inter- 

 rupted there by four fibrous annular intervals. In this re- 

 markable disposition of the gizzard , our specimen agrees 

 with the species of the genus Moniligaster. This genus 

 was established by Perrier on a single specimen from Cey- 

 lon {M. iJeshayesi Perr.) ^); a second species {M. Barwelli) 

 was afterwards described by Beddard ^), who examined a 

 number of examples collected in Manilla. According to the 

 descriptions of Perrier and Beddard however there seems 

 to exist rather a great difference in the disposition of the 

 genital organs of the two species. M. Deshayesi Perr. 

 should be characterized by the presence of two pairs of 

 testes , situated at some distance from each other , in the S^h 

 and 10*^ segment respectively. The vasa deferentia of the 

 anterior pair of them open on to the exterior by a pore 

 between the 7>h and 8'^ segment and are furnished with 

 two large glands, situated in the 7th ring. It might be 

 suggested that these glands , considered by Perrier as ac- 

 cessory organs of the vasa deferentia, correspond to the 

 copulatory pouches of our specimen; for in M. Barwelli 

 Bedd. there is also in the 8th segment a pair of sperma- 

 thecae , communicating with the exterior by a long and 



1) Proc. Royal Phys. Soc. Edinburgh, Vol. VIII, p. 424. 



2) loc. cit. p. 130. 



3) Ann. and Mag. Nat. Hist. Vol. XVII, 1886, p. 94. 



]Sote8 from the Ueyden Aluseum, "Vol. IX. 



