Boone, Annelida, Cruises of "Alva" 97 



seventh branchia is the first quadribranchiate one and has all four 

 lobes long. This branchia distinctly exceeds the cirrus in length. 

 The eighth to fourteenth branchiae inclusive are each quadri- 

 branchiate, the branchial series increasing in length progressively 

 eaudad. The twentieth branchia is five-lobed. The twenty-first 

 branchia is only two-lobed. The twenty-second branchia is four- 

 lobed. The twenty-third to thirty-second branchia inclusive are 

 each five-lobed. The thirty-third branchia is also five-lobed but 

 with the fifth lobe bearing a rudimentary node or lobe proximally. 

 The thirty-fifth branchia is normally five-lobed on the right side, 

 but on the left it is seven-lobed, the proximal first lobe being 

 divided into three for the distal half of its length, while the other 

 four lobes of the branchia are of normal length as in the preceding 

 branchia. The thirty-fifth branchia on the left side is seven-lobed, 

 the proximal three lobes here being separate throughout their 

 entire length as are also the remaining outer four. The branchia 

 of the opposite right side is normally five-lobed. The thirty-sixth 

 to forty-first branchia are regularly five-lobed. Beginning with 

 the thirty-third somite, the lobes of the branchia progressively 

 decrease in length eaudad. In the other two specimens from the 

 Society Islands, the aberrant forms of lobe division, cited in cer- 

 tain somites of the above-described specimen, do not occur on the 

 identical somites, but a similar variation in the branchia is evi- 

 dent on one somite in the second specimen and on two somites of 

 the third specimen. Otherwise the branchia are typical. 



References: Eunice afra, Crossland, C, Proc. Zool. Soc. Lon- 

 don, 1904, pt. I, p. 289, pi. 20, figs. 1-5.— Fauvel, P., Archiv. 

 Zool. Exper. et Gen., Paris, 1918-20, t. LVIII, p. 374, 

 (synonymy) ; Mem. Indian Mus., 1932, vol. XII, No. 1, p. 135 

 (more synonymy) . 



Eunice grubei Gravier 

 ■f 



Type : M. Gravier's type was taken at Djibouti, Red Sea, and 

 is deposited in the Paris Museum. 



Distribution : This species is widely distributed in the littoral 

 zone of the Indo-Pacific region, having been reported from the 

 Red Sea, East Africa, Maldive Archipelago, the Nicobars, Am- 

 boina. New Caledonia and now from Falcon Island, Queensland. 



