THE GORGONACEA COLLECTED BY DR WILLEY. 197 



Family. Muriceidae. 

 Acamptogorgia acanthostoma, Germanos. 



This fragment agrees with Germanos' description (8) of a colony from Ternate 

 except as regards the colour, which is not whitish but greyish brown. 



The centre of the axis is divided into chambers and many of the chambers 

 contain calcareous matter in the form of irregular lumps. 



The spicules are decidedly larger than in the form described by Germanos, iu which 

 they measure '15 mm. and 25 mm. In this form on the average they measure 

 "5 x "4 mm. Otherwise it agrees with Germanos' description and excellent figures. 



Habitat. Milne Bay, British New Guinea. About 20 fathoms. 



Previously recorded from Ternate. 



Acamptogorgia spinosa, Hiles 1 . 



The specimens consist of two fragments, the larger of which measures 95 mm. in 

 height and 70 mm. across the broadest part. It is evidently only the fragment of a 

 larger colony, as there is no basal part and do branch which could be called the main 

 stem. The thickest branches measure "5 mm. in diameter. It resembles the specimen 

 Acamptogorgia spinosa from Funafuti excepl that it is somewhat darker in colour 

 and larger generally. This may be due to the specimens being fragments from an 

 older colony. The calyx spicules also project slightly further. 



Measurements. 



Funafuti specimen. These fragments. 



Polyps. 73 mm. high. - 83 mm. high. 



„ '55 mm. in diameter at the base. - 86 mm. at the base. 



Opercular spicules. '36 mm. x "09 mm. - 55 mm. x '18 mm. 



Polyp spicules. "37 mm. x '36 mm. - 66 mm. x "44 mm. 



Coenenchyma spicules. '11 mm. x '31 mm. '36 mm. x '47 mm. 



The spicules are thus larger; still these differences do not seem to justify making 

 a new species. Both forms are from the same depth. 

 Habitat. Blanche Bay, New Britain. 40 fathoms. 

 Recorded from Funafuti, Ellice Islands. 



Acamptogorgia tuberculata, n. sp. (PI. XXII. Figs. 1 and 2.) 



There is one small colony of this species. The main stem is 32 mm. in height 

 by 1*4 mm. in diameter near the base. 



It gives off branches on the two sides in the same plane, 6 branches altogether. 

 Three of these bear each a lateral branch. 



The longest branch is 20 mm. in length. The polyps are closely placed on three 

 sides of the stem and branches, leaving the back of the branches free. 



1 My account of the Gorgonacea collected by Mr J. Stanley Gardiner in Funafuti will be presented to the 

 Zoological Society on January 17th, 1899. 



