REPORT ON THE ASTEROIDEA. 267 
Pentagonaster patagonicus is found in the Littoral zone, and passes into the 
Continental zone. Pentagonaster granularis, Pentagonaster alewandri, and 
Pentagonaster dentatus are found in the Littoral zone, pass into the Continental, 
and extend into the Abyssal zone. Pentagonuster perrieri (= Pentagonaster 
grandis, Perrier) is found in the Continental zone and passes into the Abyssal 
zone. Pentagonaster crassus, Pentagonaster deplasi, Pentagonaster vincenti, 
Pentagonaster gosselim, Pentagonaster hexsitans, Pentagonaster lepidus, 
Pentagonaster elongatus, Pentagonaster fallax, Pentagonaster affinis, and 
Pentagonaster intermedius have hitherto been found only in the Abyssal 
zone, the last named at a depth of 1930 fathoms. 
Greatest range of one species: Pentagonaster alexandri, from 84 to 1930 
fathoms. As there is some doubt about the reference of the specimen from 
1930 fathoms to this species, and as I am uncertain about the species really 
belonging to the genus Pentagonaster, the following may also be cited: Penta- 
gonaster dentatus, from 41 to 1500 fathoms. 
y. Nature of the Sea-bottom: The nature of the ground inhabited by Pentagonaster 
is recorded in the case of very few species. Pentagonaster granularis is 
found on sand, shells, and clay ; Pentagonaster parvus on broken shells and 
corals, and on a hard bottom; Pentagonaster affinis on mud; Pentagonaster 
dentatus on Globigerina mud ; Pentagonaster japonicus and Pentagonaster 
arcuatus on Green mud; Pentagonaster patagonicus on sand in 55 fathoms 
(Atlantic), and on Blue mud in 245 fathoms (Pacific); Pentagonaster lepidus 
on Volcanic mud in 1000 fathoms. 
Chorological Synopsis of the Species herein mentioned. 
Ocean. Range in Fathoms. Nature of the Sea-bottom. 
— — = = — | — es 
Sate eae 
Pentagonaster arcuatus Pe lieaertic: 345 | Green mud. 
Pentagonaster astrologorum. | Pacific. Was ae ate 
Pentagonaster granularis . | Atlantic. | 20 to 640 | Sand, shells, clay, gravel, stones. | 
Pentagonaster lepidus . | Atlantic. 1000 Volcanic mud. 
| Pentagonaster semilunatus . | Atlantic, Indian Pacific. Le | Pht 
| Pentagonaster japonicus . | Pacific. 345 Green mud, | 
: | Pacific and Atlantic, || ~~, 2 { Sand (55 fathoms, Atlantic). 
D, etpy nape | AF 9 F ) = 2 ss 
Penigon inter AAG Ontos (Magellan’s Strait), {| f ato as) | \ Blue mud (245 fathoms, Pacific). 
1. Pentagonaster senilunatus, Linck. 
Pentagonaster semilunatus, Linck, 1733, De Stellis marinis, p. 21, tab. xxiv., No. 39; tab, xxvii., No. 
45; tab. xxiii, No. 37. 
Asterias granularis (pars), Gmelin, 1789, Linn, Syst. Nat., Ed. xiii, p. 3164. 
