a 
REPORT ON THE ASTEROIDEA. 399 
8. Bathymetrical range: 30 to 450 fathoms. 
y. Nature of the Sea-bottom - Chextaster longipes on coral reefs and on voleanic mud. 
The localities of Chetaster hermanni, Miller and Troschel, and Chetaster troschelii 
(Valenciennes MS.), Miiller and Troschel, are unknown. ‘The type of the latter species 
is lost, and I consider that the name should be discarded. I am in great doubt as to 
whether either of these forms could be referred to the genus Chetaster established on the 
basis of Chetaster longipes. 
Chorological Synopsis of the Species herein mentioned. 
| Ocean. Range of Fathoms. Nature of the Sea-bottom. 
Chetaster longipes . -| Atlantic. 30 to 450 Coral ; Volcanic mud. 
1. Chetaster longipes (Retzius), Sars. 
Asterias longipes, Retzius, 1805, Diss. sist. spec. cog. Asteriarum, p. 20. 
Asterias subulata, Lamarck, 1816, Hist. nat. anim, s. vert., t. 11. p. 568, \ 
Cheztaster subulata, Miller and Troschel, 1840 (April), Monatsber. d. k. preuss, Akad. d. Wiss. Berlin 
p. 103; System der Asteriden, 1842. p. 27. 
1 Astropecten (Astropus) longipes, Gray, 1840 (Nov.), Ann. and Mag. Nat. Hist., vol. vi. p. 182 
Synop. Spec. Starf. Brit. Mus., 1866, p. 4. 
Nepanthia tessellata, Gray, 1840 (Dec.), Ann, and Mag. Nat. Hist., vol. vi. p. 287; Synop. Spec 
Starf. Brit. Mus., 1866, p. 15. 
Chetaster longipes, Sars, 1857, Bidrag til Kundskaben om Middelhavets Littoral-Fauna, p. 107. 
Localities—Station 75. Between the Islands of Fayal and San Jorge, Azores. July 
2, 1873. Lat. 38° 38’ 0” N., long. 28° 28’ 30” W. Depth 450 fathoms. Volcanic mud. 
Surface temperature 70°°0 Fahr. 
Station 36. Off Bermuda. April 22,1873. Lat. 32° 7’ 25” N., long. 65° 4’ 0” W. 
Depth 30 fathoms. Coral. Surface temperature 67°°5 Fahr. 
“Porcupine ” Expedition : 
A single example. Locality and depth not recorded. 
Remarks.—All the examples collected at the above-mentioned stations are of smaller 
habit than that usual in full-grown specimens from the Mediterranean. A number of the 
examples from Station 36 have here and there tubercular enlargements of the paxille, 
which recall the knobs present in Chetaster nodosus, Perrier, and appear to me to be of the 
same character. In Chextaster nodosus the knobs are very numerous, and present a con- 
spicuous facies, which led me to regard M. Perrier’s example as a well-marked form when 
I had the privilege of examining it in his laboratory in Paris. 
