ON THE NEPHBIDIUM OF PHYLAf'TOLAEMATOTTS POLYZOA. 87 



Fig. 5-11. Cross sections of the nepliridium with the ueighbnuviiig 

 parts of the polypide. 3 x V. 



Fig. 12. Diagrammatic representation of a nephvidium. 



Fig. 13. Diagram showing the relation of the cavity of nephridium to 

 various cavities of the body. 



A Preliminary report on Leptostraca 



in Kiushiu. 



By H. Nakagawa. 



Fiftli Koto-Galdco, Kumamoto, Kiusliiu. 

 NEBALIA sp. (PJ. VI). 



Among the collection which I made at Amakusa, Kinshin, last Decem- 

 ber I have fomid out 10 specimens of this interesting crustacean, of which 

 one half are adults, 2 being males and 3 females. 



Males and females do not differ much in outward configuration, and are 

 only distinguishable when their thoracic appendages are compared. These 

 a])pendages, especially the first 3 pairs have in the female a considerably longer 

 endopodite tipped with longer and stronger branched hairs with a thinner 

 branchial appendage thaji the same appendages in the male. The hodiy from 

 the tip of the rostrum to the base of the forked tail measures 7™"'- to 7.5"^"'- 

 The carapace entirely covers both eyes and reaches as far back as the middle 

 of the .5th abdominal segment. Eye-stalks are shorter than the eyes 

 (Fig. I). Anterior antennae with oval, foliaceous, fringed appendage which 

 is less than one-third of the whip-like, IG jointed terminal portion, the entire 

 length beiiig 3.5"™- in the male and 3"™- in the female (Fig. II). Posterior 

 antennae, 5""" and 4-'"™' long in the male and female respectively, and terminal 

 portion 20-21 jointed (Fig. II). Mandibles with a short and maxillae with 

 a long palp especially long ii] the case of the second maxilla ; the palp of this 

 appendage is carried directed dorsally and jiosteriorly and has its tip project- 



