REPORT ON THE ALCYONARIA. 249 



rock. It is from 10 to 20 mm. in height, witli a broad diameter of 70 mm. aud a medium 

 diameter of 40 mm. in width. It bends upon itself into two nearly equal portions, which 

 have an average diameter of about 20 mm. each. The marginal zone for about 5 mm. 

 in width is rough, as in the other species of the genus, while the upper portion of the 

 column is divided into constrictions partly corresponding to the lobes of the capitulum ; 

 it is wrinkled. 



The capitulum is very extensively lobed, the lobes often growing over one another. 

 The whole mass, which in shape follows the contour of the column, or nearly so, might 

 be described as kidney-shaped, with an outer convexity of 130 mm., and an inner con- 

 cavity of about CO mm. On each half of the head there are about six principal lobes, 

 each of which is again lobed ; the outer edges of each lobe are everted and fold down 

 against the column ; the inner edges between each pair of lobes fold in over the cential 

 portion of the capitulum ; these meet those from the opposite lobes, sometimes growing 

 over one another, and quite concealing from view the central portions of the capitulum. 

 Thus the upper surface of the capitulum has the appearance of a Meandrine coral. The 

 texture is rough. 



The autozooids are numerous, well marked, and arranged on the lobes with a certain 

 amount of regularity, in rows parallel to the edges of the lobes, with an average distance 

 from each other of I'd mm., with about 1 mm. between the rows. The polyps of one 

 row appear to be alternate with those of the adjoining row. 



The siphonozooids are numerous, not easily perceived when the specimen is taken fresh 

 from spirits, but quite perceptible on a dried morsel. 



The colour is of a uniform dull brown. 



The spicules of the sterile trunk measure — the tuberculated spindles 0"54-0'14 ; 

 O-42-O'l mm. ; the more slender spiny spindles 0'44-0'06 ; 0-34-004 ; 0"22-002 mm. 

 Those of the capitulum measure — the straight or curved spiny spindles 0-3-0'02 ; 

 0-lf)-0'02 mm. ; the club-shaped forms, with roughened heads 0"18-0'04 ; 0'16-0'04 mm.; 

 and the four-rayed forms 0-3-0-06 ; 0-26-0-08 ; 0-16-0-06 mm. 



Habitat. — Off Kandavu, Fiji Islands. 



Sarcophytuin trocheliophorum, Marenzeller, var. amhoinense (PL XLI. fig. 11). 



Sarcophytum trochelioplwrum, Marenzeller, Zool. Jahrb., Bd. i. p. 359, Taf. ix. figs. 5, 6. 

 Sarcophijtum puhno, Ehrenberg, Klunzinger {non Esper). 



A specimen in the collection appears to belong to this species, which is very wideh' 

 distributed throughout the Indian Ocean. It had been attached to a mass of soft coral 

 rock, by' an irregular clinging base, from which a short column was developed : this has 

 the rough lower layer and the smoother upper portion, and varies in height. The basal 

 portion adapts itself in great measure to the inequalities of the surface to which it adheres. 



(zool. CUALL. EXP. — PART LXIV. — 1889.) Sss 32 



