488 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Measurements. — 



. (fta = 0.07-0.10 mm. n . [ft = 4.00 mm. 



Aperture, nn-rnin Zoarium, nn 



* [la = 0.07-0. 10 mm. la = 3. 00 mm. 



Affinities. — This species is very well characterized by the presence 

 of its small avicularia and small apertures. It is rare and peculiar 

 to the Sea of Japan. 



Occurrence.— D. 4807. Cape Tsiuka, Sea of Japan; 41° 36' 12" N.; 

 140° 36' E. 



Holoti/pe.— -Cat. No. 8284, U.S.N.M. 



CONESCHARELLINA CONCAVA, new species 



Plate 60, figs. 8, 9 



Description. — The zoarium is large, conical, transverse; the apex 

 is obtuse. The zooecia are arranged in radial rows, with apertures 

 very close together. The aperture is suborbicular with a wide distal 

 semielliptical sinus; the proximal pore is rather large and distant. 

 The radial rows are separated by shallow furrows containing a row 

 of small poriform avicularia very close together. The base is concave; 

 it is perforated by large scattered pores between which there are 

 numerous small, elliptical avicularia with pivot. 



Measurements . — 



. Ik = 0.12mm. „ . [ft = 3. 50 mm. 



Aperture, Zoarium, 



^ Ua = 0.12mm. U = 5.50mm. 



Affinities. — In the relative arrangement of the apertures and the 

 avicularia, this species is very close to Conescharellina catella but 

 differs from it in its concave base, in its transverse and much larger 

 zoarium, and in the absence of radial costules. The figured specimen 

 only has been found. 



Occurrence. — D. 5311. China Sea, cicinity of Hong Kong; 21° 33' 

 N.j 116° 15' E.; 88 fathoms; crs. S., Sh. 



Eolotype.— Cat. No. 8285, U.S.N.M. 



CONESCHARELLINA LUNATA, new species 



Plate 68, figs. 4, 5 



Description. — The zoarium is conical, in form of a bell, as high 

 as broad. The zooecia are arranged in very regular radial rows 

 separated by rows of small interzooecial orbicular, alternating avicu- 

 laria with pivot; they form a crescent around each aperture. The 

 aperture is large, suborbicular, a little elongated; the proximal pore 

 is large, placed on a small salient convexity. The base is concave 

 with very convex zooecia; the center is ornamented with large and 

 small polygonal pores irregularly arranged. 



Measurements. — 



. |fta = 0.16mm. „ . [ft = 4.00 mm. 



Aperture, Zoarium, 



^ Ua = 0.15mm. a = 4.00 mm. 



