upon yes from Funafuti. ^iGl 



28. TopsK.vr, K. "Deiixiiiiu) Cmtribtition ii I'^tude doa Cliunides," 



Arch. Zool. Kxpt'T. 1891, (J) v.il. i\. p. .">.>0. 



29. . "Sp(tn<,'iaire3 de hi Biiie d'Aiuboiae," Rovue Suisse de 



Zoologie (Bedot), 18!»7, vol. iv. p. 421. 



30. Whitki.k<jgk, T. " Tlie Spoof^es of Funafuti," Australian Mu- 

 seum, Memoir III. 1897, p. 323. 



EXPLANATION OF THE PLATES. 

 Pl.vtk XIII. 



Fiy. 1. Plectroniuia Iliitdvi, .su. ii. 



a. Specimen, natural size. 



b. c. Lar^re fu.-^ed qiuidriradiates, forming skeleton mesh, X 200. 

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



/, g, h. Triradiates, X 200. 



»■-/. Tuuing-fork spicule.*, X 400. 



m-o. Tylotes and subtylotes, X 400. 



/>-r. Style and oxea, x 400. 

 Fiy. 2. Placinohpha spinosa, sp. n. 



«. Natural size. 



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



k-m. Lophodiactines, X 200. 

 Fig. 3. Placinastrilla clathrata, sp. n. 



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

 6. Section, x 10. 



c. Small calthrops, x 200. 



d. Larger calthrops, X 200. 

 e-g. Tri,.d.s, x 200. 



//. Dermal diactine, x 20(1 



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



Plate XIV. 

 Fig. 1 , a. Fragment of Evhinopura bored by Dgecliona Duvidi, sp. u. 



b. Portion of the sponge separated by decalcification, showing 



the lobes, x 10. 



c. Strongvle, x 200. 



d. Spirally spined microstrongyle, X 200. 



e. The same, X 600. 



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

 figures. 

 Fig. 2. Latrimculia clavigera. 



a, Spc'cimen incrusting Gorgonia, natural size. 



h. Tylote, X 12.5. 



c, d. Disca*ter3, x 400. 



e. Small tylote, X 400. 

 Fig. 3. Erglus monticularis, sp. n. 



e. Smallest microxea, x 2">0. 

 /. Orthotriaene, x 100. 

 g. Chia.*ter, X 4<X). 

 h. Oxy asters, X 400. 



a. Surface, X oO 



b. Sterraster, x 400. 



c. Large oxeiim, x 200. 



d. Medium-sized oxeum, x2oO. 

 Fig. 4. Tedauia levin, sp. n. 



n. Spined strongyle, x 200. 



b. Tylote, X 200. 



c. Smooth strongyle, x 200. 



d. Trichodragina, X 200. 



e. The same with rhaphides compact, X 200. 



Ann. (£• Mag. N. Hist. Ser. 7. Vol. vi. 24 



