REPORT <>X T1IK ASTEROIDEA. 



26; 



Pentagonaster patagonicus is found in the Littoral zone, and passes into the 

 Continental zone. Pentagonaster granularis, Pentagonaster alexandri, and 



Pentagonaster dentatus are found in the Littoral zone, pass into the Continental, 

 and extend into the Abyssal zone. Pentagonaster perrieri ( = Pentagonaster 

 grandis, Perrier) is found in the Continental zone and passes into the Abyssal 

 zone. Pentagonaster crassus, Pentagonaster deplasi, Pentagonaster vincenti, 

 Pentagonaster gosselini, Pentagonaster hsesitans, Pentagonaster lepidus, 

 Pentagonaster elongatus, Pentagonaster fallax, Pentagonaster affinis, and 

 Pentagonaster intermedins 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. 



1. Pentagonaster semilunatus, Linck. 



Pentagonaster si mUunatus, Linck, 1733, De Stellis marinis, p. 21, tab. xxiv., No. 39 ; tab. xxvii., No. 



45 ; tab. xxiii., No. 37. 

 Asterias granidaris (jpars), Gmeliri, 1789. Linn. Syst. Nat., Ed. xiii., p. 3104. 



