SUBORDER ALCYONARI A. 613 



9. A. aurantiacum. *14. A. trichanthinum. 



*10. A. vlride. *15. A. confertum. 



*11. A. flabellum. *16. A. rigidum. 



*12. A. flexile. *17. A. murale. 

 13. A. flavum. 



II. Ezplanate, surface flat. 



*18. A. glaucum. '19. A. latum. 



1 I. Glomerate and not lobulose. 



20. A. pulmo. 



IV. Ramose, surface of pedicel becoming nearly solid from calcareous secretions, and 

 zoophyte retractile into the same. 



21. A. elegans. 



I. Alcyonia ramosa aut elongato-arrecta. 



1. ALCYONIUM DIGITATUM. (Linn.) 



A. mammiUosum aut diyitatum, basi incrustans, lobis paucis, cylindricis 

 et conoideis, scepe s-1" crassis, et plures elongatis; extus subcoria- 

 ceum, griseum et aurantiacum; ports stellalis sparsis ; polypis ex- 

 pansis, 4-5'" exsertis, et 1^'" latis. 



Mammillary or digitate, from an incrusting base; lobes few, cylin- 

 drical or conoid, often \ to 1 inch thick, and several inches long : 

 exterior subcoriaceous, grayish and orange, scattered over with 

 stellate pores; polyps, when expanded, 4 to 5 lines exsert, and 

 summit 1 lines in breadth. 



Coast of Britain and Northern Europe. 



The common names of this species, Dead Man's toes, Dead Man's 

 hands, and Cow's paps, are sufficiently descriptive of its forms. The 

 polyps are unusually large for the genus ; the size, as above given, is 

 taken from a figure by Johnston, which he states to be natural size. 

 This author, in his account of this species, describes some specimens 

 as thin incrusting, and refers here the Akyonium rubrum, of Miiller, 

 which is placed by Ehrenberg with the Sympodia. 



Dead Man's hand, or Dead Alan's toes, A. 2 ; Akyonium manus marina, in Phil. 

 Ellis, Corall. 83, No. 2, pi. 32, fig. a, A. Trans., liii. 431, tab. 20, figs. 10-13. 



154 



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fo'HITBESITY] 



