42 



Species. 



82. #. digitalis With longish processes, slightly 



connected ; the surface muri- 

 cated and ragged. 



83. bullata Branched, tubulous ; with inflated 



nodes,and terminating in points. 



84. syphono'ides Tubes elongated in the form of a 



syphon. 



85. coins Erect, clavelliform, and tubular. 



86. tubulosa Full of tubes; branched, erect 



and slender at the end. 



87. muricina With subramose tubes, every 



where muricated with acute 

 tubercles. 



88. confederata Formed of many connected tubes. 



89. intestinalis With many hollow, unequal lobes. 



90. coronata Minute, a tube crowned with ra- 



diating little spines. 



91. tubularia Sessile, compressed, porous ; with 



longitudinal tubules. 



92. ciliata Conical, bending tube, becoming 



smaller upwards, and ciliated 

 at the apex. 



VI. Foliaceous masses ; divided in flat, leaf-formed lobes. 



93. S. perfoliata Plain stalk, with round foliaceous 



lobes, disposed spirally on the 

 stalk. 



94. pennatula With erect, rounded, wedge- 



formed, foliaceous lobes, very 

 porous. 



95. cactiformis Ramose; with flat, flabellated ex- 



pansions, rounded or muriated 

 at the summit, and small dis- 

 persed excavations on one face. 



