1900.] 



MARINE FAUNA OF CHRISTMAS ISLAND. 



131 



Ecionema bacilliferum (Carter). 



1887. Stelletta bacillifera Carter (4. p. 78, pi. vi. figs. 9-14). 



1897. Ancorina simplex Lendenfeld (9. p. 96, pi. ix. figs. 12-34). 



1898. Ecionema bacilliferum Lindgren (10. p. 335, pi. xvii. fig. 17 ; 

 pi. xix. fig. 27). 



1899. Ecionema bacilliferum'? Lindgren (10a. p. 88). 



The largest of the four specimens in this collection is 4 x 5 c.c. 

 in area and 1 c.c. in thickness, and forms a thick crust ; in colour 

 pale brown mottled with dark brown. 



The type specimen from Mergui, being in the Calcutta Museum, 

 is not available for comparison. The protrieenes are very rare in 

 the Christmas Island specimens. The microstrongyles, which are 

 18x2 yu in size, are occasionally centrotylote. The fine cortical 

 oxeas measure 180 x 4 jjl. 



The asters are tylote, and with roughened actines, the same 

 characteristics being found in the asters of Ancorina simplex, of 

 which species the Museum possesses a few slides prepared from 

 the type specimens from Zanzibar. 



Distribution. Mergui, Java, Christmas Island, Zanzibar ; var. 

 robustum : Port Phillip, Ports Elliot and Adelaide. 



Stelletta simplicifurca (Sollas). 



1886. Myriastra simplicifurca Sollas (16. p. 



1888. Myriastra simplicifurca Sollas (17. 

 figs. 29-33). 



1898. Stelletta simplicifurca Lindgren (10. p. 332, pi. xviii. 

 fig. 8). 



Of the three specimens of this species, one is small (8x6x6 

 mm.) and oval ; the other two are in the form of thick nodular 

 lamellae, the larger being 5x3 c.c. in area and from 1 to 2 c.c. in 

 thickness. 



189). 

 p. 114," pi. xii. 





Small spec. 

 Christmas I. 



Largest spec. 

 Christinas I. 



Torres 



Straits. 



' Challenger.' 



Cochin 



China. 



Lindgren. 



2700x84 



(54),? 540 



3240x30 



108 



168 



84 



2900x60 



252x4 



12 



Ortbolriaenes 

 Orthotrisenes 

 Anatrittnes. 

 Anatriaenes. 

 Anatriijenes. 

 Anatrisenes. 

 Large oxea 

 Small oxea 

 Chiasters ... 



Rhabclus ... 



Cladi 

 Rhabdus ... 

 Cladi 



1375x50 



280 



1820x22 



105 



122 



88 



1925x49 



102x6 



12 



1825x52 



245 

 1330x15 



54 



72 



48 



1330x24 



210x3 



12 



2325x55 



366 



1860x29 



120 



127 



90 



2000x31 



252x3 



12 



Chordi 









The surface of the lamella; presents a tessellated pattern, the 



9* 



