SILICIOUS AND HORNY SPONGES WILSON. 363 



(Tetilla) Cinachyrella, new subgenus. 



Cynachyra part Lendenfeld, 1903, p. 2G. 

 Species of Tetilla in which there are poriferous pits (smooth and 

 sphinctrate depressions, the wall of which is a sieve-membrane) but 

 which lack the cortex characteristic of Cinachyra. 



Tetilla hirsuta Dendy (1889, p. 75; 1905, p. 89) and perhaps some 

 of the other species enumerated under Cinachyra by Lendenfeld, 

 1903, fall here. It may be noted that Tetilla {Cinachyra) malac- 

 censis Igerna B. J. Sollas, 1902 (p. 219), from the Malay Peninsula, 

 was not included in Lendenfeld's list. The following species pub- 

 lished since Lendenfeld, 1903, also fall here : 



Tetilla limicola Dendy, 1905, p. 93. 



Tetilla {Cinachyra) anomala Dendy, 1905, p. 91; 19215, p. 20. 



Tetilla {Cinachyra) isis Lendenfeld, 1906, p. 143; Dendy, 1921&, 

 p. 16. 



Tetilla {Cinachyra) hamata Lendenfeld, 1906, p. 145. 



Tetilla {Cinachyra) alba-tridens Lendenfeld, 1906, p. 149. 



Tetilla {Cinachyra) alba-bidens Lendenfeld, 1906, p. 151. 



Tetilla {Cinachyra) alba-obtusa Lendenfeld, 1906, p. 154. 



Tetilla {Cinachyra) vertex Lendenfeld, 1907, p. 310. 



Tetilla {Cinachyra) vertex, var. monticularis Kirkpatrick, 1908, 

 p. 11. < 



Tetilla cinachyroides Hentschel, 1911, p. 281. 



Tetilla {Cinachyra) phacoides Hentschel, 1911, p. 285. 



Tetilla {Tethya) clavigera Hentschel, 1912, p. 327. 



Tetilla {Cinachyra) mertoni Hentschel, 1912, p. 332. 



Tetilla {Cinachyra) nuda Hentschel, 1912, p. 333. 



Tetilla {Cinachyra) vaccinata Dendy, 1921&, p. 14. 



Tetilla {Cinachyra) providentiae Dendy, 19216, p. 18. 



The species included in this report which fall under Cinachyrella 

 are, in addition to Tetilla hirsuta Dendy and T. clavigera (Hent- 

 schel), T. crustata, together with var. patellae-spinosae and the 

 forms aperta and hispida, T. paterifera. 



TETILLA (CINACHYRELLA) HIRSUTA Dendy. 



Tetilla hirsuta Dendy, 1889, p. 75 ; 1905, p. 89 ; 1916&, p. 104. 

 Cinachyra hirsuta (Dendy) Lendenfeld, 1903, p. 28. 



Malchochin Harbor, Linapacan Island, one specimen. There are 

 some differences in spicule measurements (see below), but the Alba- 

 tross sponge fits well in Dendy's species, agreeing with the type 

 (Dendy, 1889, p. 75) not only in possessing poriferous pits, but also 

 in regard to the structure of the ectosome, the general shape, color, 

 and size of the body, the hirsute nature of the surface, and the pres- 

 ence of a central " nucleus " from which the skeletal bundles radiate. 



