BRYOZOA OF THE PHILIPPINE REGION 307 



D. 5151. Sirun Island, Tawi Tawi Group; 5° 24' 40" N.; 120° 

 27' 15" E.; 24 fathoms; co., S., Sh. 

 Cotypes.— Cat. Nos. 8053-8055, U.S.N.M. 



SCHIZOMAVELLA (METROPERIELLA) LEPRALIOIDES Calvet. 1903 



Plate 33, fig. 9 



1903. Schizoporella lepralioides Calvet, Bryozoaires de l'Hirondclle, Resultats 

 des Campagnes scientifiques du Prince de Monaca, fasc 23, p. 142, 

 pi. 16, fig. 8. 



Measurements. — 



Aperturaj^ <= - 10 mm " Zooecialf z =0.40-0.55 mm. 



iZa=0.07mm. \lz -0.40 mm. 



The zooecial dimensions are in accord with those which can be 

 measured on the figures of Calvet, 1903. The difference from 

 Schizomavella subimmersa MacGillivray, 1879 is very small and con- 

 sists only in the special arrangement of the ovicell, entirely surround- 

 ing the apertura; the operculum is almost identical with that which 

 Waters, 1889, has given for MacGillivray's species; it is a little less 

 elongated than the operculum figured by Calvet, 1903. These dif- 

 ferent authors have not noted the opercular dimorphism which is 

 very evident on our specimens. The general structure of the oper- 

 culum is that of Schizomavella. 



Our specimens encrust nullipores, Orbitoides, and especially pebbles. 

 They were generally living. The operculum closes the ovicell in 

 opening. 



Biology. — This species appears to descend to greater depths as the 

 distance from the equator increases but the number of our stations 

 is not sufficient to be positively certain of this phenomenon. The 

 species was in reproduction and fixation in March and April, 1908 

 (36-192 meters). 

 Occurrence. — 



D. 5147. Sulade Islands, Sulu Archipelago; 5° 41' 40" N.; 120° 



47' 10" E.; 21 fathoms; co., S., Sh. 

 D. 5179. Romblon Light, Romblon; 12° 38' 15" N.; 122° 12' 



30" E.; 37 fathoms; hard S., 24.2° C. 

 D. 5217. Anima Sola Island, between Burias and Luzon; 13° 20' 

 N. ; 123° 14' 15" E. ; 105 fathoms; crs., gy. S. ; 1 7.2° C. 

 Atlantic: Picot Fayal, Azores, 136 meters. 

 Plesioty pes. —C&t. No. 8056, U.S.N.M. 



Genus BUFFONELLARIA Canu and Bassler, 1927 



The ovicell is hyperstomial and not closed by the operculum. The 

 frontal is an olocyst with vein like markings. There is a small oral 

 avicularium. 



Genotype. — Hippothoa divergens Smitt, 1873. Recent. 



