Sponges from Funafuti. 361 



28. TopseiVt, E. " Deuxiems Contribution a l'<5tude ties Clionides," 

 Arch. Zool. Expe"r. 1891, (2) vol. ix. p. 565. 



l".). . "Spongiairea de la Baie dAmboine," Revue Suisse de 



Zoologie (Bedot), 1897, vol. iv. p. -421. 



30. Whitelegge, T. " The Sponges of Funafuti," Australian Mu- 

 seum, Memoir III. 1897, p. 328. 



EXPLANATION OF THE PLATES. 

 Plate XIII. 



Fig. 1. Plectroninia Hindei, sp. n. 



a. Specimen, natural size. 



b, c. Large fused quadriradiates, forming skeleton mesh, X 200. 

 d, e. Smaller quadriradiates of basal layer, X 200. 



/, g, h. Triradiates, X 200. 



i-l. Tuning-fork spicules, X 400. 



m-o. Tylotes and subtylotes, X 400. 



p-r. Style and oxea, x 400. 

 Fig. 2. Placinolopha spinosa, sp. n. 



a. Natural size. 



b-i. Microcalthrops in graduated sizes, X 200. 



k-m. Lophodiactines, X 200. 

 Fig. 3. Placinastrella clathrata, sp. n. 



a. Surface, showing a pore area, X 0. 



b. Section, X 10. 



c. Small calthrops, x 200. 



d. Larger calthrops, X 200. 

 e-g. Triods, X 200. 



It. Dermal diactine, X 200. 



i-o. Larger (choanosomal) diactines, x 200. 



Plate XIV. 

 Fig. 1, a. Fragment of Echinopora bored by Dyscliona Davidi, sp. n. 



b. Portion of the sponge separated by decalcification, showing 



the lobes, x 10. 



c. Strongyle, X 200. 



d. Spirally spined microstrongyle, X 200. 



e. The same, X 600. 



f. g. Spicules of D. purpurea, Hancock, copied from Hancock's 



figures. 

 Fig. 2. Latrunculia clavigera. 



a. Specimen incrusting Gorgonia, natural size. 



b. Tylote, X 125. 



c. d. Discasters, x 400. 

 e. Small tylote, X 400. 



Fig. 3. Erylus monticularis, sp. n. 



e. Smallest microxea, X 250. 

 /. Orthotriame, x 100. 

 g. Chiaster, X 400. 

 h. Oxyasters, X 400. 



a. Surface, X 50. 



b. Sterraster, X 400. 



c. Large oxeum, x 200. 



d. Medium-sized oxeum, X250 

 Fig. 4. Tedania levis, sp. n. 



a. Spined strongyle, X 200. 



b. Tylote, X 200. 



c. Smooth strongyle, x 200. 



d. Trichodragma, X 200. 



e. The same with rhaphides compact, X 200. 



Ann. & Mag. N. Hist. Ser. 7. Vol. vi. 24 



