26 



PKOF. F. J. BELL OJS THE HOLOTHUEIANS 



to euter here on any extensive bibliography ; 1 propose, in most 

 cases, to refer simply to that naturalist's work. 



1. Synapta recta, Semper ; Lampert, p. 220. — Owen Island. 

 This species has hitherto only been reported from Bohol. 



2. Chirodota rufescens, Brandt; Lampert, p. 230. — Elphin- 

 stone Island. 



This is a widely distributed species, extending to Japan. 



3. Cucumaeia Forbesi, n. sp. (Plate II. figs. 1-3 .) 

 Among various Echinoderms sent at different times by Mr. 



James A. Murray, of the Kurrachee Museum, I have recognized 

 a new species of Cucumaria, which was comparatively well repre- 

 sented. In an essay of mine on that genus, which has now been 

 long in preparation, I find the MS. description of this species. 

 As it is represented in Dr. Anderson's collection by a single spe- 

 cimen, I here transcribe and publish that description : — ■ 



Body elongated, almost quadrilateral ; suckers numerous, 

 confined to the ambulacral arese ; integument thick, white, dense, 

 richly supplied with spicules. Calcareous ring simple ; retractors 

 rather long, broadest in their middle. 



The spaces separating the trivial row of suckers are narrow, 

 and, as they lie nearly in the same plane, the general form 

 of the body is as nearly quadrangular as pentagonal ; in these 

 rows the suckers are not confined to two regular series ; in the 

 bivial rows the suckers are more regularly arranged in paired sets. 



The calcareous ring is simple and delicate, the retractors are 

 inserted just behind the first anterior third of the body, and are 

 swollen into a muscular belly about their middle. Polian vesicle 

 large, elongated ; genital tubes simple, attached far forwards. 



The spicules are not unlike those of C. Flanci, but not so 

 stout; the rounded medusiform bodies have a few holes, and 

 those large ; the supporting spicules in the suckers are nearly 

 straight, and have a few holes, which are largest and most 

 numerous at either end. 



Measurements : — 



millira. millim. imllim. 



Length 48 575 635 



Breadth of narrower 



interambulacrum . . 3'5 5 6 



Breadth of wider do . . 4 7 7 



