Alcyonaria G 17 



Paragorgia arborea (L.) E.dw. and H. 

 Text Figure 1. Plate XIII. Plate XIV; Fig. 1. 



This has been recorded by Professor Hickson. 1 from the Kadiac islands, 

 and by others from the North Pacific, together with the form or variety P. nodosa 

 Koren and Dan. Nutting 2 recorded the latter with doubt, from Lat. 54 30' N. 

 and^Long. 179 14' E. in 344 to 372 fathoms, and also from off the Hawaiian 

 islands, in 423 to 435 fathoms, in 1908. 3 Kinoshita recorded both P. arborea 

 and P. nodosa from Sagami bay. 4 



Whether any of the above records refer to the P. pacifica I am unable to 

 say. There may be doubt whether P. pacifica is not a variety of P. arborea. 

 This can hardly be determined until more specimens come to hand. Careful 

 study of the spicules in this group is necessary for the determination of species. 



X2 



Fig. 1. Paragorgia arborea (Linn.). Swollen end of a branch, with ployps and numerous siphonozooida, 

 partly expanded. From Atlantic Fishing Banks. x2. 



Paragorgia arborea (Text fig. 1) is very common on the deeper fishing banks 

 off Nova Scotia and Newfoundland, where it grows to a great size. Some of 

 the specimens from there have been 4 to 5 feet high, with the main trunk 4 

 inches in diameter at the base. Specimens two or three feet high are not un- 

 common. It branches irregularly, often in truly arborescent forms, but in 

 other cases the branches are irregular and sometimes reunite in various ways. 

 They often have nodes or bunches, and very often the tips of the branches are 

 swollen or bilobed (see fig. 1). It has numerous siphonozooids. 



iProc. Zool. Soc. London, p. 548, 1915. 



'Free. U.S. Nat. Mus. vol. 24, p. 99. 



3 Nutting. op. cit. vol. 24, p. 568, 1908. 



4 Jour. Coll. Sci. Imp. Univ. Tokyo, vol. 32, p. 32, 1913. 



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