AKT. 4 



SPONGES OF CALIFORNIA DE LAUBENFELS 



93 



dona discreta (Thiele, 1905, p. 447) from the coast of Chile. It has 

 toxas as well as chelas, which latter we note are remarkably small 

 (8/i), and its spicules, other than the dermal, are much thicker than 

 those in asodes. It also differs in having plumose ascending columns 

 of spicules. Topsent (1914, p. 618) made this the type of his genus 

 Dictyciona. That this genus is synonymous with Eurij'pon may 

 well be argued. 



The smallness of the chelas of asodes is phenomenal. Very ac- 

 curate measurement showed many as small as 0.0035 mm in total 

 length. Whitelegge (1906, p. 471), describing Ef<periopsis canallcu- 

 lafa, lists chelas 0.0014 mm long, but does not speak in his text as if 



O 



A 



=3 



D <^=^ <S=^ ^^^=^ 



<J=0 <C:,=,^ 



FiouRB 54. — Eurypon asodes de Laubenfcls : A-C, XoOO: others, Xl,33.". 



thev were at all marvelous; one is very much inclined to believe it a 

 misprint for 0.014 mm ; if not, that is the only instance I can find of 

 smaller microscleres than these remarkable ones of Eun/pon asodes. 



Family MICROCIONIDAE « 

 Genus MICROCIONA Bowerbank 



MICROCIONA MICROJOANNA de Laubenfcls 

 Miorociona micro joanna de Laubbnfels, 1930, p. 27. 



Holoti/pe.—V.S.'NM. No. 21468; B.M. No. 29.8.22.28. 



Type locality. — Pescadero Point, near Carmel, Calif., May 11, 

 1929, collected by me. The species is moderately common in cent'^al 

 California, and there was a specimen in the collection of the Uni 

 vcrsity of Southern California. This latter was taken near Point 

 Vincente, July 5, 1924, depth 18 meters, and is U.S.N.M. No. 21406. 



Description. — Shape, encrusting. Size, up to 2 cm thick, 7 cm in 

 diameter. Consistency, firm, slightly spongy. Color of holotype in 

 life, brilliant scarlet; that collected from the same locality in 1926 

 was a beautiful rich pink. That collected by the University of 

 Southern California bore no notation of color in life. All fade to 

 drab in preservatives. Oscules, round, scattered, with sphinctrate 

 membrane; diameter 1.5 mm; they are found only where the sponge 



" For Clathriidae Hentschel, because Microciona supplants Clathria. 



