199 



Fam. HippoNYCiDAE. 

 Amalthea Schumacher. 



1. Amalthea conica Schumacher. 



Schumacher. Essai, p. i8i, PL 21, fig. 4. 



Tryon. Man. of Conch. Vol. VIII, p. 136, PI. 41, fig. 9—15 {aiistralis). 



Stat. 9. 7°44'.6S., II4°42'.6E. Madura Sea. 353 M. Soft, fine, grey mud. 2 Spec. 



Stat. 60. Haingsisi, Samau-island. Reef, i Spec. 



Stat. 78. Lumu-Lumu-shoal, Borneo-bank. Shore. 3 Spec. 



Stat. 93. Pulu Sanguisiapo, Tawi-Tawi-islands, Sulu-archipelago. 12 M. Lithothamnion-bottom, 



sand and coral, i Spec. 



Stat. 125. Savvan, Siau-island. Reef. 7 Spec. 



Stat. 142. Laiwui, North coast of Obi Major. Reef. 4 Spec. 



Stat. 193. Sanana-bay, East coast of Sula Besi. Reef, i Spec. 



Stat. 213. Saleyer. Reef. 2 Spec. 



Stat. 225. South of Lucipara-island. Reef. 7 Spec. 



The specimens as usually, are very different in shape and colour, they are more or less 

 elevated and entirely white, more or less radiated with brown, or nearly entirely brown. The 

 specimens from a great depth (Stat. 9) are fixed on a much worn shell of a Gastropod, perhaps 

 a Trito7iidea, from Stat. 78, on Stromhis iirceus Lin., from Stat. 225 on Terebra crenulaiahin., 

 Strombus urceus Lin., from Saleyer on large spines of an Echinoderm, probably Acrocladia, 

 from Haingsisi on Cassis vibex Lin. So it is conspicuous that they have no preference for any 

 group of shells, to fix themselves upon. I can detect no basal shell-plate, but especially the older 

 specimens have made conspicuous scars in the shells on which they live. One rather adult 

 specimen from Saleyer, has in accordance with its abode on a spine, a strongly compressed 

 shape. Some adult specimens have young ones on their backs. 



2. Amalthea Danieli Crosse. 



Crosse. Revue Zool. 1858, p. 161, PI. 3, fig. 2 [Captdus). 



Journ. de Conch. 1862, p. 19 {Hipponyx). 



Tryon. Man. of Conch. Vol. VIII, p. 136, PL 41, fig. 21, 22. 



Stat. 51. Madura-bay. 69 — 91 M. Fine grey sand, coarse sand with shells and stones. I Spec. 

 Stat. 260. Near Nuhu Jaan, Kei-islands. 90 M. Sand, coral and shells, i Spec. 



The specimen from Stat. 5 1 , which is the most characteristic, was affixed on Gyrineum 

 cuspidatum Rve, but was easily loosened, leaving a scar. This species has been recorded from 

 New Caledonia, by Crosse, Tryon (I.e.) records no other localities, so it may be new for 

 the archipelago. 



3. Amalthea (Malhivhim) lissa Smith. 



Smith. Ann. and Mag. Nat. Hist. Ser. 6, Vol. XIV, 1894, p. i66, PL 4, fig. 4—6 [Captdus). 



Ann. and Mag. Nat. Hist. Ser. 7, VoL XIV, 1904, p. i. 



V. Martens. Beschalte Gastrop. d. deutschen Tiefsee-Exp. 1898 — 99, p. 117. 



91 



