660 
Proceedings of Royal Society of Edinburgh. [sess. 
centre; areolae distinct; intervals attenuating gradually outwards, 
reaching tlie border. 
Habitat. — Kerguelen Island, H.M.S. Challenger (O’Meara). 
Asterom. stellatus. Ralfs in Pritch. Inf., p. 838. — Diam. ‘045 
to ‘07 mm. Centro-lateral area elongate, faintly subclavate with 
slight median constriction. Markings : rays straight or slightly 
curved, springing from apex and side of centro-lateral area, some- 
times dichotomous ; the compartments reaching about § of radius 
inwards, their inner ends conical, with sides slightly convex; 
areolae obscure, decreasing outwards from 14 to 20 in *01 mm., 
most evident near the apices of the compartments ; the intervals 
rapidly attenuating outwards, reaching close to the border. — Astero- 
lampra stellata, Grev., Trans. Micr. Soc. Lond ., 1860, p. 124, pi. iv. 
fig. 20. 
This species approaches A. hiltonianus, hut is distinguished by 
the more straight radii, which are never geniculate ; in the 
appearance of the centro-lateral area it comes near to A. elegans. 
Habitat. — Indian Ocean, soundings 2200 fathoms, Captain Pullen 
(Greville !) ; Holothvria , China (Deby !). 
Asterom. elegans. Grev., Quart. Jour. Micr. Sci., 1859, p. 161, 
pi. vii. fig. 6. — Diam. ’075 to T4mm. Centro-lateral area elongate, 
its inner end rounded, straight or somewhat bent near the subsolete 
ray. Markings: rays simple, dichotomous, rarely branching, more 
frequently with sharp, rarely obtuse geniculations near their middle 
or somewhat closer to the central area ; the compartments conical, 
their inner ends subacute ; the areolae most evident at the inner 
ends, elsewhere obscure, decreasing outwards from 12 to 16 in 
*01 mm.; intervals narrow, attenuating outwards, their outer ends 
close to the border. — Ralfs in Pritch. Inf. , p. 837, pi. v. fig. 87.; 
Sch., Atl., pi. xxxviii. figs. 1, 2 ; Asterolampra elgans , Grev., 
Trans. Micr. Soc. Lond., 1860, p. 118, pi. iv. fig. 16; Actino- 
gramma Jupiter , Ehrb., Abh. Ber. Ah., 1872, p. 392, pi. ix. fig. 3 ; 
Ac. Venus, Ehrb., ibid., pi. ix. fig. 4 ; Ac. Saturnus, Ehrb., ibid., 
pi. ix. fig. 5; Ac. Sol, ibid., pi. ix. fig. 6. 
Habitat . — Indian Ocean soundings, 2200 fathoms, Captain 
Pullen (Greville !) ; Californian guano (Norman !) ;* dredged by 
* In the collection of Dr R. K. Greville. 
