THE GORGONIANS OF THE BRAZILIAN COAST. 389 



The external layer is more dense, composed largely of very small double- 

 heads and heads. 



The larger spicules are elongated and acute, pretty evenly and cloaeh \?art«d 



white spindles and double-spindles, some of them blunt or irregular. '1 



regular four-branched crosses are relatively small and not numerous, with 

 short, thick rays, closely covered with graded warts. There are also many 

 crosses with two arms shorter, and some with one arm obsolete, or nearly 90, 

 forming triradiate spicules. The small external spicules are 1 inly double- 

 rosettes and partly close double-heads and small crosses. 



The larger double-spindles measure 0.f>:} X 0.15; 0.40 X 0.13; 0.38 X 0.15; 

 0.34 X 0.12; twin-spindles, 0.48 X 0.18; crosses, 0.21 X 0.19; Imperfect mimes, 

 0.20 X 0.12; double-rosettes, 0.15 X 0.10;0.12 X 0.11;0.12 X 0.10; a 15 X "08; 

 double-heads, 0.15 X 0.12; 0.12 X 0.09; heads, 0.12 X 0.11; clul». O.ifi X 0.12 



mm. 



Mar Grande, Brazil. Coll. Richard Rathbun, Hartt Exped. Tyj No 



4501, Yale Museum. 



Subfamily PLEXAURIN^ Verrill, nov. 



Eunicet castelnaudi M.-Edw. 



Milne-Edwards, Corall., vol. I, p. 148, 1857. 



Nothing is known by me of this species except the original very mcap r 



description. 



It was placed by Edwards in the section of Eunicea having a very thirk, 

 "suberous" coenenchyma and bilabiate apertures. The cilicles are described 

 as large and short. It is repeatedly dichotomous. 



Bahia, Brazil. Coll. M. de Castelnau (M.-Edw.). 



Subfamily STENOGORGIN^ Verrill, nov. 



FILIGELLA Gray. 



Gray, Annals and Mag. Nat. Hist., ser. 4, vol. II, p. 443, text-fig. 2, 18< 



According to Gray the axis is slender, terete, horny, free at both ends. Coe 

 nenchyma is composed of a single layer of spindles and the calicles have similar 

 spindles. They are small, verruciform. Tentacles wholly retractile. 



The free condition is doubtless due to an injury and subsequent repair of 

 the broken stem by the coenenchyma growing over it. I have often seen the 

 same condition in slender species of Viminella, etc. 



The genus seems to be closely allied to Stenogorgia. 



This genus has recently been well revised by K. Kinoshita. 



He secured a number of good specimens of a new Japanese species, which 

 he described fully. He unites Elasmogorgia Wr. and Stud., with FiligtUa, and 

 admits that the specimens are sometimes attached. 



*Journ. Col. Sci.. Imv. Univ. Tokyo, vol. 27. pp. 1-16, pi. I, II, 1W9. 



