24 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 1 1 



Distribution. — This sponge has been described from the West Indies 

 and from the Gulf of California as just noted. It has also been described 

 from Australia, but the Australian specimen is certainly not conspecific. 



Material examined. — 

 Sta. 1039-40 Guaymas Bay 1-23-40 10 m 



Remarks. — The specimen mentioned above is remarkably close to 

 previously published descriptions. The California member of this genus, 

 M. bellabellensis Lambe, has much larger chelas than M. angulosa. It 

 has, moreover, very few, if any, sigmas. It is probable that several Mycale 

 should be synonomized where the differences are in the size ranges of the 

 chelas alone. 



Genus GARMI A Gray 



Garmia contax, new species 



Plate 39, Figs. 77, 78 ; Plate 40, Figs. 79, 80 ; Plate 41, Fig. 81 



Diagnosis. — ^This sponge is about 2 square cm by .5 cm thick. The 

 surface is irregular, the consistency is softly spongy, pores and oscules are 

 not evident. 



A special dermal membrane, very thin and detachable, is found in 

 places. This is filled with spicules in confusion. The general endosomal 

 structure is bready with occasional fibers. 



The principal spicules are styles to subtylostyles ; size 7 /a by 300 fi. 

 Dermal and interstitial spicules tylostyles ; size 3 /x by 240 /«,. There are 

 three size categories of palmate anisochelas: first, 6 fi to 7 /x; second, 14 fi 

 to 16 [x; third, 21 /* to 23 fi. This triple range of anisochelas is rather 

 typical of Mycale and Carmia. Other microscleres are sigmas 75 jx and 

 18 /A long, toxas averaging 55 /x, and some rhaphids 2 /x by 150 /x. 



Holotype. — ^AHF no. 12. 



Type locality. — Los Frailes, Lower California ; 20 m ; sand and algae 

 bottom. 



Distribution. — Same. 



Material examined. — 

 Sta. 751-37 Los Frailes 4-4-37 20 m 



Remarks. — This species differs from its nearest relative, C. contarenii 

 Martens, 1824, chiefly in the very small size of the sigmas and in the 

 peculiarly shaped heads on the tylostyles of C. contarenii, which, while 

 definitely tylotes, may be smaller than the thickest part of the shaft, and 

 show a trilobate structure. C. contarenii also has trichodragmas and no 

 toxas. It should be transferred to Mycale for this reason. It is found off 

 England and in Mediterranean waters. 



