42 



Species. 



82. >S'. digitalis With longish processes, slightly 



connected ; the surface muri- 

 cated and ragged. 



83. — bullata.... Branched, tubulous ; with inflated 



nodes,and terminating in points. 



84. — syphondides Tubes elongated in the form of a 



syphon. 

 83. — colus 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. — tiibularia 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. — cactif or mis ...... ^2iV[\o%e; with flat, flabellated ex- 



pansions, rounded or muriated 

 at the summit, and small dis- 

 persed excavations on one face. 



