BRYOZOA OF THE PHILIPPINE REGION 485 



In meridian section there are 5 longitudinal rows of internal cells 

 arranged in quincunx. We have observed some special cells with 

 their large orbicular aperture. 



Affinities. — This species differs from Conescharellina jucunda which 

 also bears avicularia on the costules in its larger colonies, its much 

 closer and more numerous apertures and in its very porous base. 



Biology. — This species is rather common in the Philippines where 

 its geographic distribution is large; nevertheless it does not leave the 

 interior of the Archipelago and we have not observed it in the China 

 Sea or in the Pacific. It is limited to tranquil waters of little depths; 

 moreover the avicularia are very numerous. The two specimens 

 dredged at Mount Dromedario at 437 meters of depth, are very 

 vigorous, much calcified and belong to a special variety adapted to a 

 greater depth. 



This species is indifferent to the nature of the bottom, although we 

 have noted that it shuns the rocky bottoms and that sand is necessary 

 to its biologic evolution for sand occurs in all the localities observed 

 Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 04' 25" N.; 120° 58' 30" E.; 20 



fathoms; S. Sh. 

 D. 5141. Jolo Light, Jolo; 6° 09' N.j 120° 58' E.; 29 fathoms; 



co. S. 

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



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

 D. 5151. Sirun Island, Sulu Archipelago; 5° 24' 40" N.; 120° 



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

 D. 5192. Jilantaguan Island, off northern Cebu Island; 11° 09' 



15" N.; 123° 50' E.; 32 fathoms; green sand. 

 D. 5213. Destacado Island, east of Masbate Island; 12° 15' N.; 



123° 57' 30" E. ; 80 fathoms; S. M. Sh. (common). 

 D. 5577. Mount Dromedario, north of Tawi Tawi; 5° 20' 36" 

 N.; 119° 58' 51" E.; 240 fathoms; crs. S. (variety.). 

 Cotypes.— Cat. Nos. 8277-8279, U.S.N.M. 



CONESCHARELLINA CATELLA, new species 



Plate G8, figs. 8-10 



Description. — The zoarium is conical, much higher than wide; the 

 apex is sharp. The radial costules are salient, rounded; they bear 

 laterally the apertures very close together and have the general aspect 

 of small chains. The apertures are oval, elongated, with a small 

 distal sinus; the proximal pore is rather large, adjacent to the aper- 

 ture, often transformed into a small avicularium. The avicularia 

 placed at the bottom of the intercostular furrows arc small, elliptical, 

 with pivot, close together, somewhat alternate. The base is entire, a 

 2182—29 32 



