428 BULLETIN 100, LtniTED STATES NATIONAL MUSEUM. 



and Troschel's views, and '-'' ecMno'phora'''' is certainly not '•' EcM- 

 nasterP 



As noted under the synonymy, Rlioijia Gray (1840, p. 282) was 

 founded upon two species, Rhopia sejyosita and B. mediterranean 

 the first of which I have already designated as type (19136, p. 195). 

 Gray states that Rhopia seposita is the same as Asterias seposita 

 Ketzius, 1783, and Aste7ias seposita Lamarck, 1816. He was appar- 

 ently mistaken in regard to Retzius' species, which is said by Miiller 

 and Troschel (1842, p. 127) to be the same as the species now known 

 as Henricia sanguinolenta (O. F. Miiller,. 1776). Lamarck's A. 

 seposita originally included the species now called Echinaster seposi- 

 tus and Henricia sanguinolenta, but was restricted to the former by 

 Miiller and Troschel (1842, p. 23, 126, but synonymy on p. 23 is cor- 

 rected on p. 126 and 127). Gray must have had in mind the Medi- 

 terranean species for his type, because he had already made the 

 true Asterias seposita of Retzius the type of HenHcla under the 

 name of oculata Pennant (1777) [this being antedated by A. 

 sanguinolenta O. F. Miiller, 1776]. Likewise his short diagnosis 

 refers to Echinaster and not to Henricia., and the inclusion of 

 Rhopia mediterranean a synonym of E. seposita (Lamarck) indicates 

 the group intended, namely, what I call Echinaster. 



It is evident from the foregoing that the name seposita occurs 

 under two different meanings. In any event the Asterias seposita 

 of Lamarck is invalidated because it is a homonym of A. seposita 

 Retzius, 1783. Now A. seposita Retzius is itself a synonj^m of A. 

 sanguinolenta O. F. Miiller, and is therefore shelved. In order to 

 use seposita as the name of the Mediterranean Echinaster, it would 

 be necessary to show that Retzius referred to this species. He did 

 not refer to it, because his locality and description indicate Henricia^ 

 and he later described the Echinaster in question as Asterias sagena 

 and A. sanguinolenta (Dissertatio, 1805, pp. 21, 22). Naturally the 

 second of these names is rendered untenable by being a homonym of 

 A. sanguinolenta O. F. Miiller, 1776. But Asterias sagena is ap- 

 parently available, and should be used m place of seposita. The type 

 of Echinaster is therefore Echinaster sagenus (Retzius). 



ECHINASTER CALLOSUS von Marenzeller. 



Plate 112, fig. 2 ; plate 122, figs. 4, 5 ; plate 132, figs. 5, 5a-e. 



Echinaster caUosus von Makenzeller, tjber eine neue Echinaster-Art 

 von den Salomons-Inselu, Denk. k. Akad. Wiss. Wien, vol. 62, p. 531, 

 1 pi. — ^KoEHLEB, 1910a, p. 174. 



Notes on the specimens. — The largest specimen is larger than the 

 type, having R=215 mm., r=22 mm., R=9.8 r. The disk is, there- 

 fore, as in the type, quite small, and the rays are a trifle swollen 



