190 verrill. synopsis of 



Family. Jsidm. 



Pabisis Laxa Verrillj these Proceedings, p. 152. 



Corallurn flabelliforra, loosely branched, openly reticu- 

 lated, only a few of the branches coalescent ; branchlets 

 spreading nearly at right angles, somewhat elongated, 

 curved, obtuse at the ends ; papillse rather large, irregular- 

 ly crowded; ccenenchmya thin, roughened by the points of 

 minute spicula; axis slender, consisting of white calcareous 

 joints alternating with shorter dark brown ones of the same 

 thickness, but softer; color, in alcohol, light gray. Height 

 of a small specimen 3 inches : width 3: diameter of branch- 

 lets .20. 



Off Hong Kong. China, in 15 fathoms, shelly gravel, 

 May, 1854. Color, in life, bright light blue. Dr. Wm. 

 Stimpson. 



Mopsella japonic a Verrill, nov. sp. 



Low, spreading, dichotomous, branching nearly in a 

 plane ; branches slender, diverging at an angle of about 

 45,° obtuse at the ends ; cells rounded, papilliforrn. rather 

 large, crowded. Color, of all the specimens observed, Ver- 

 million with yellow polyps. 



Simoda, Japan. Dr. Wm. Stimpson. 



This species is most nearly allied to M. coccinea (Isis 

 coccinea Ellis and Sol.), but the branchlets do not coalesce 

 as in that species, and spread much less abruptly. The 

 cells, also, are considerably larger. 



SUBOEDEE, ALCTOSACEA. 



Family, Alcyoxid-E. 



Alcyoxium rubiforme Dana. 



Lobvlaria rubiformis Ekrenberg. 



Arctic Ocean in 35 fathoms. Capt. J. E.odgers. West 

 Coast of Behrings Straits in the Laminarian Zone. Dr. 

 Wm. Stimpson. 



