BRYOZOA OF THE PHILIPPINE REGION 211 



Occurrence. — 



D. 5235. Nagubat Island, east coast Mindanao; 9° 43' N.; 



125° 48' 15" E.; 44 fathoms; sft. M. 

 D. 5478. Tacbuc Point, Leyte; 10° 46' 24" N.; 125° 16' 30" 

 E.; Sh.; 57 fathoms (common). 

 Geographic distribution. — Indian Ocean: Zanzibar, 13-16 meters. 

 China Sea: Tizar Bank, 44 meters; Singapore, 12 meters. Pacific: 

 15 localities of Malay region cited by Harmer; Louisiade Archipelago. 

 Plesioty pes. —Cat. Nos. 7892, 7893, U.S.N.M. 



SCRUPOCELLARIA DIADEMA Busk, 1852 



Plate 9, figs. 4, 5 

 1926. Scrupocellaria diadema Harmer, Polyzoa "Siboga" Expedition, p. 379, 

 pi. 25, figs. 20-25 (Bibliography). 



Measurements. — 



_-, , |7iO = 0.32mm. 7 a ■ jLz = 0.52 mm. 



External opesium , _,. Zooecia 



^ Uo = 0.14mm. It2 = 0.16 mm. 



Width of a segment = 0.48 mm. Vibracular chamber = 0.16 mm. 



Structure. — Harmer, 1926, gave a very good account of this common 

 species. He figures the porous ovicells, the articulation, the varia- 

 tions of the scutum, the mandible and rectifies the synonymy. 

 Marcus, 1922, figures the chitinous joints "en echelon." 



"It may be distinguished by its robust habit, by its short ovicells 

 with large tubular pores, by its very variable scutum (sometimes 

 wanting) and by the tendency to produce gigantic frontal avicularia 

 on the axillary zooecia." All these essential characters (save the 

 latter) are visible on our photographs. 



Geographic distribution. — Pacific: Queenland, Torres Strait, Society 

 Islands, Southern Japan, all of the Malay Peninsula, Amboine, 

 Aru Islands, Java, New Guinea, Sumatra, and 25 localities cited 

 by Harmer. China Sea: Singapore. Indian Ocean: Andamans Is- 

 lands, Merqui Archipelago, off Negrais (Burmah) (69-80 meters), 

 Madras (6-10 meters), Ganjam coast (38-48 meters), Ceylon. 

 Essentially tropical in the southern hemisphere this species extends 

 to the 40th parallel in the northern hemisphere. 



Occurrence.— D. 5478. Tacbuc Point, Leyte; 10° 46' 24" N.; 

 125° 16' 30" E.; 57 fathoms; Sh. (common). 



Plesiotypes— €at. No. 7894, U.S.N.M. 



Genus CANDA Lamouroux, 1816 

 1816. Cauda Lamouroux, Histoire des polypiers coralligenes flexibles, p. 132. 



The ovicell bears an avicularium. The cilium of the dorsal vibra- 

 culum is serrate. The radicular dietellae arc united to each other 

 by parallel radicles. The articulation is simple, buried in the zooe- 

 cimn; often a scutum; 16 tentacles. 



Genotype. — Canda arachnoides Lamouroux, 1816. 



Range. — Eocene — Recent. 



