REPORT ON THE ASTEROIDEA. 471 
SovtHerN Ovran : Three species between the parallels of 40° and 60° S. 
*Pteraster affinis, off Kerguelen. *Pteraster rugatus, from 
between Kerguelen and Heard Islands. *Pteraster semireticulatus, 
off Marion Island. 
Paorric : Two species between the parallels of 70° (?) N. and 60° S. 
*Pteraster stellifer, off the western coast of South America. 
Pteraster aporus, from Bering Sea. 
8. Bathymetrical range: 10 to 2021 fathoms. 
Greatest range of one species: Pteraster pulvillus, 50 to 2021 fathoms. 
Excepting Pteraster militaris and Pteraster sordidus, none of the other 
species extend into the Abyssal zone. Pteraster caribbeus and Pteraster 
stellifer occur in the Continental zone. 
y. Nature of the Sea-bottom : Mud, sandy clay, or gravel. 
Pteraster affinis and Pteraster caribbeus on mud. Pteraster militaris on 
sandy clay or shelly ground. Pteraster rugatus on coarse gravel. Pteraster 
stellifer on Blue mud. 
The species collected by the Challenger are indicated in the foregoing list by an 
asterisk. 
Chorological Synopsis of the Species. 
| 
| Ocean, Range in Fathoms. Nature of the Sea-bottom. 
a | 
Pleraster affinis . : ‘ ; Southern. 28 Volcanic mud. 
Pteraster aporus . ; . : Pacific. Be te 
Pteraster caribbeus ; ‘ A Atlantic. 151 to 451 Soft grey mud. 
Pteraster dane. : : : Atlantic. 30 (1%) see 
+76 . ° | G 1, f , d ’ 
Pteraster militaris ; : ; Atlantic. | 10 to 530 | or hel erent y clay 
Pteraster militaris, var. prolata : Atlantic. 608 tee 
Pleraster pulvillus . i “ ; Atlantic. | 50 to 2021 a 
Pteraster rugatus . : ; - Southern, | 150 | Coarse gravel. 
Pteraster semtreticulatus . , : Southern. 50 . 
Pteraster sordidus . r ; . | Atlantic. 622 | 
Pteraster stellifer . : : : Pacific. 245 | Blue mud. 
1. Pteraster militaris, Miller and Troschel. 
Asterias militaris, O. F. Miiller, 1776, Zool. Dan. Prodr., p. 234, No. 2828. 
Asteriscus militaris, Miller and Troschel, 1842, System der Asteriden, p. 44. 
Pteraster militaris, Miiller and Troschel, 1842, System der Asteriden, p. 128, tab. vi. fig. 1. 
Locality.—Station 49. South of Halifax, Nova Scotia. May 20, 1873. Lat. 
43° 3’ 0” N., long. 63° 390” W. Depth 85 fathoms. Gravel, stones. Bottom tempera- 
ture 35°°0 Fahr.; surface temperature 40°°5 Fabr. 
