SERTULARELLA FUSIFORMIS. 243 



occasionally (deep water) ; Wick, on other zoophytes 

 (C. W. P.) : Hebrides; Shetland, on Tubularia indivisa 

 (A.M.N.). 



6. S. FUSIFORMIS, Hincks. 



SERTULARIA FUSIFORMIS, Cat. Devon and Corn. Z. 11, pi. vi. figs. 7, 8, Annals 

 N. H. (3rd ser.) viii. 253, pi. vi. figs. 7, 8. 



Plate XLVII. fig. 4. 



STEMS slender, slightly zigzag, generally simple, annu- 

 lated at the base and below each calycle ; HYDROTHECJE 

 bent in opposite directions, elongate, somewhat flask- 

 shaped, smooth, one to each internode, aperture quadri- 

 dentate, operculurn composed of four pieces each in- 

 ternode, with its calycle, of a fusiform figure ; GONO- 

 THECJS elongate ovate, slender, ribbed across, produced 

 at the upper extremity into a short neck, and toothed. 



Height from -j- of an inch to 1 inch. 



THIS minute zoophyte presents the appearance of a 

 series of fusiform pieces, springing one from the side of 

 the other about midway, and bending alternately in op- 

 posite directions. Its nearest ally is the S. tenella. It 

 is one of the company of pigmy forms, as exquisite as 

 they are minute, which reward a diligent search amongst 

 the chinks and crannies of the tidal pools. 



Hab. Between tide-marks, on rocks, South Devon; 

 under one of the lower ledges, Capstone, Ilfracombe 

 (T. H.) : Torbay (E. Parfitt) : Hebrides (A. M. N.). 



R 2 



