110 THE VOYAGE OF H.M.S. CHALLENGER. 



Antipathella? boscii (Lamx.) (PI. XII. fig. 29). 



Antipatltes Boscii, Lamouroux, Polyp, flex., p. 375, pi. xiv. fig. 5 ; Encycl. Method., t. iv. p. 69 ; 

 Verrill, Mem. Bost. Soc. Nat. Hist., vol. vi. p. 36. 



Lamouroux gives a very imperfect description of this species: — " Tige flexueuse, 

 rameuse ; rameaux divergents, extremites setacees ; couleur brun fonce ; grandeur environ 

 un decimetre." Lamouroux's figure shows a species unlike any form which I have 

 seen figured elsewhere. The branches are lax and spreading, and the coenenchyma 

 appears collected in large masses between the forks of branches at various points. 



Verrill appears to be the only other authority who has given us an account of this 

 form, but it is uncertain whether he has described the same species. I append his 

 description at length : — " Corallum finely and densely branched from very near the base, 

 forming an irregular subflabelliform matted frond. Branches slender, numerously divided 

 in an irregularly dichotomous or subpinnate manner, frequently coalescent, especially near 

 the base, the reticulations very irregular. Branchlets slender, setiform, the terminal ones 

 from ^ to 1 inch in length. Surface of the branches and branchlets thickly covered by 

 small acute spines projecting nearly at right angles ; between the spines, minutely scabrous. 

 Colour black, branchlets translucent, dark amber coloured. Coenenchyma not observed. 

 Height 10 inches, breadth 14 inches. The specimen is in the collection of the Museum 

 of Comparative Zoology at Harvard College, and was obtained by Louis Agassiz near 

 Charleston, S.C." 



The figure which I am enabled to give of the arrangement of the spines in this 

 species (PI. XII. fig. 27) is taken from a small specimen of VerriU's form in the Copen- 

 hagen Zoological Museum, received through the Museum of Comparative Zoology at 

 Harvard College. 



Habitat. — S. Carolina, Bosc (Lamouroux) ; off Charleston (Verrill). 



Anti'patliella ? intermedia, n. sp. (PI. XII. fig. 2). 



Corallum laxly and irregularly branched, the stronger branches 3 "5 to 7*5 cm. apart. 

 The stem and branches all bear pinnules, which are imperfectly arranged in four 

 different planes ; two are lateral and pass out subhorizontally, but are somewhat arched 

 and directed forwards ; these are the most abundant. The other two series arise 

 from very near the anterior surface of the axis, and pass off subvertically, but in their 

 upper portions have an antero-lateral inclination. The pinnules are 0"8 to 1*4 mm. apart, 

 irregularly disposed, the lateral ones in a subalternate manner, the others at greater and 

 more irregular intervals. The whole of the pinnules are filiform, usually simple, though 

 one here and there may bear a short secondary pinnule nearly at right angles. At 

 irregular intervals a pinnule increases in size, and practically becomes a branchlet, 



