ASTKROPH1LA. IO3 



likewi-e occupy the main lumen and even extend in -mall quan- 

 tities some distance into the albunu-n gland. Anterior to the 

 -eminal receptacle the walls of the canal change abruptly, be- 

 coming thicker and the secretion stain- -o inten-cly that the 

 cell outline- and nuclei become almost completely <>l>literau-d 

 Thi <>f affairs exists between the seminal receptacle and a 



poim -lijnly posterior to the external repn>ducti\ e opeiiin^. 

 Anterior to this region the duct presents the form of a roughly 

 i oni. .il sa< extending to a point opposite the foot. The wall- of 

 thi- |ioin h .ire similar to the darkly staining one- ju-t described 

 save that the secretion is more vacuolatcd and accordingly less 

 derpK -i. lined. The duct leading from this mueou> -envting, 

 in.iin i anal to the exterior is relatively short, thin-walled and 

 passes into the furrow at the right side of the body formed by 

 tin union oi the visceral mass with the pseudopallium. 



In t\\o -pei imens whose pseudopallium contained fully 500 

 rmbr\o- the ovary held an e(|iial number of ova in a fully de- 



\elop.d ( lition. Hence it is probable that during adult life 



t In brood pouch is empty for short periods only. 



The ;^i -nus may be defined as follows: 



. 1 'ild new genus. Body globular, 2-2O mm. in diameter, 



c. unpleieK enveloped in the pseudopallium. Foot and mantle 

 nidimentarx . liuccal-pharyiigcal tube, with salivary gland-, 

 opens into o unbilled stomach and digestive gland that otheru i-e 

 do not open to the exterior. Xo radula. Albumen and mucou- 

 gland- on reproductive canal highly developed, and seminal 

 i-.epiacle prominent. 1'arasitic in starfish Pedicellaster sp., 

 >ea of Japan. Type of genus A.japonica. 



.1 . ju/'onii'ti new species. \Yith characters of the genus. 



