PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 61 



are about as broad as long or slightly longer, and the following increase in length so that 

 the distal are about three times as long as broad. P 2 is 6 rum. long, similar to P, but 

 proportionately stouter, with about 14 segments of which the distal are rather more 

 elongated than are those of P!. P 3 is from 7.0 mm. to 7.5 mm. long, similar to P 2 but 

 proportionately stouter, with 17 segments of which the outer have slightly produced 

 distal ends. P 4 is 6.5 mm. long, about as stout basally as P 3 but more slender distally, 

 the outer segments with more prominent distal ends. P 5 is 5 mm. long, nearly as stout 

 basally as P 4 , but more slender distally and composed of longer segments. The follow- 

 ing pinnules are similar to P 5 , gradually becoming longer and more slender. The 

 distal pinnules are 6 mm. long. 



The color in alcohol is brownish yellow with the perisome dark brown. 



Localities. Siboga; Maumeri, on the southern coast of Flores; coral reef [A. H. 

 Clark, 1918] (1, Amsterdam M.). 



Siboga station 79a; East Borneo Bank (lat. 238'30" S., long. 11746' E.); 54 

 meters; fine coral sand; June 12, 1S99 [A. H. Clark, 1918] (2, U.S.N.M., E. 447; Amster- 

 dam M.). 



Siboga station 99; anchorage off North Ubian (lat. 607'30" N., long. 12026' E.); 

 16-23 meters; June 28-30, 1899 [A. H. Clark, 1918] (2, Amsterdam M.). 



Siboga station 96; southeastern side of the Pearl Bank, Sulu (Jolo) archipelago; 15 

 meters; lithothamnion; June 27, 1899 [A. H. Clark, 1912, 1918] (2, Amsterdam M.). 



Albatross station 5536; between Negros and Siquijor; Apo Island (center) bearing 

 S. 26 W., 11.8 miles distant (lat. 915'45" N., long. 12322'00" E.); 510 meters; 

 temperature 11.95 C.; green mud; August 19, 1909 [A. H. Clark, 1911] (1, U.S.N.M., 

 35670). 



Albatross station 5519; in the vicinity of northern Mindanao; Point Tagolo Light 

 bearing S. 71 W., 8.7 miles distant (lat. 847'00" N., long. 12331'15" E.) ; 333 meters; 

 temperature 12.39 C.; globigerina and sand; August 9, 1909 [A. H. Clark, 1911] (4, 

 U.S.N.M., 27507, 35669). Type locality. 



Between Cebu and Leyte, Philippines (lat. 1107' N., long. 12406' E.); 282 meters 

 [A. H. Clark, 1929] (1, B.M.). 



Geographical range. From Flores northward to Negros and northern Mindanao, 

 Philippines. 



Bathymetrical range. From the shore line down to 510 meters. 



Thermal range. From the temperature of the tropical reefs down to 11.95 C. 



History. This species was first secured by the Siboga among the Dutch East 

 Indies and the Philippines in 1899, but was first described from specimens dredged by 

 the Albatross in the Philippines in 1909. 



Shortly after the publication of the original description in 1911 the Siboga collec- 

 tions were sent to me and among them I found what I considered to be a new species 

 of this genus; it was described under the name of T. purpurea in 1912, but there can be 

 little doubt that T. purpurea is only the fully developed form of T. paupera. 



In 1929 I recorded a specimen from the Philippines in the British Museum collec- 

 tion. 



Genus DOROMETRA A. H. Clark 



Antedon (part) P. H. CARPENTER, Challenger Reports, Zoology, vol. 26, pt. CO, 1888, p. 204, and 



following authors. 

 Iridomelra (part) A. H. CLARK, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 131. 



