28 ART. 5. — SANH HÖZAWA : 



Genus Heteropia Cakter (omend.). 



6. Meteropia striata, u, sp. 



(PL I., fig. 8 ; PI. n., fig. 16 ; textfig. 6). 



This new species is based on three specimens in the Science 

 College. Two of them were obtained by the late Professor 

 MiTSUKURi at Koajiro, near the Misaki Marine Biological Station. 

 A third specimen was collected by myself at Aburatsbo, also close 

 to the Misaki Marine Biological Station. It was found attached 

 to the under side of a floating log. 



The first specimen (Sei. Coll. Spec. No. 25 ; PL I., fig. 8), which 

 is herewith made the type of the species, is a small colony of 

 about eighteen tubular individuals, united together at their base 

 and most of which are bent in the same direction. They are 

 broadest at base and taper distally. The larger individuals are 

 provided with terminal osculum fringed with very feebly developed 

 trichoxea ; the smaller individuals show neither osculum nor the 

 fringe. The largest individual measures 8 mm. in total length and 

 3 mm. in greatest breadth, the wall reaching about 0.7 mm. in 

 thickness. The osculum is circular with a diameter of about 

 0.6 mm. The surface shows longitudinal striation due to the 

 presence of large oxea in dermal cortex, and is hispid on account 

 of vertically projecting hair-like oxea. Colour in alcohol is white ; 

 texture rigid. 



The second specimen (Sei. Coll. Spec. No. 20) closely resembles 

 the first in both external appeai'ance and microscopical structure. 



The third specimen (Sei. Coll. Spec. No. 27) is the largest of 

 all. The colony is composed of numerous branching and anasto- 

 mosing tubes of varying cahbre. Most of the tubes are provid- 



