126 BRITISH TUXICATA. 



less red when fresh. Tentnmlr filnmfiiis long and 

 slender. Branchial sac with stout transverse vessels and 

 rather narrow folds. Reproductive organs scattered (?). 



v.d. od. 9 $ od. 



\ / 





FIG. 77. Ovaries of Styela fibrillata. Highly magnified. 



Diameter half to three quarters of an inch. 

 Hab. ? 



ENGLAND. Hastings, Sussex (Bowerbarik). 

 IRELAND. - - Birterbuy Bay, Connemara, Galway 

 (Brady). 



CHANNEL ISLANDS. -Guernsey (Norman). 

 First record. Alder & Hancock. 



FIG. 78. 



FIG. 79. 



2& 



FIG. 78. Anal aperture of Styela fibrillata. Magnified. FIG. 79. 

 Anal aperture of Styela northumbrica. Magnified. 



17. Styela depressa sp. nov. 

 (PI. XXXIX, figs. 13-16 ; PL XLIV, figs. 4 and 5.) 



Bod// transversely ovate, rather depressed, attached 

 by a broad base. Apertures approximated. Test 

 (PI. XXXIX, figs. 13 and 14) hispid; the upper 

 portion covered with sand; the lower or attached 

 portion free from sand, thin and with a few scattered 

 fibrils. Mantle [as represented by figs. 15 and 16 of 



