ZOOLOGY OF FERNANDO NORONHA. 
489 
M. ansulata does not mention the presence of a second white 
zone on the body-whorl as represented in his figure, hut this does 
occasionally exist. Try on places this species in the synonymy of 
M. dermestina , Lamk., together with M. cavea, Eeeve, M. Adamsi, 
Dohrn, M. pulchella, Eeeve, M. pisolina, Lamk., M. histrio, 
Eeeve, and M. conscinguineci, Eeeve. A more ridiculous instance 
than this of the “lumping” of species I have never seen. Tryon 
never could have examined examples of these various forms, 
for if he had he would not have united them ; he must have 
been misled by the figures, or perhaps a little jealousy of non- 
possession may have influenced him. 
Eeeve’s JSI. leucodesma he says is beyond a doubt the same as 
M. pardalis, Kiister. From this it is, in my judgment, perfectly 
distinct ; and the statement that “ Eeeve’s figure of J\I. pardalis 
is a Columbella' n is sheer guess-work. The shell figured by 
Eeeve is in the British Museum, and not only is it a Mitra, but 
correctly identified by Eeeve as M. pardalis, Kiister. What 
right had Tryon to make such a statement in the face of Eeeve’s 
description, in which he properly characterizes the shell as a 
Mitra with four plaits on the columella? Numbers of similar 
absurdities occur throughout this work of Tryon’s, which might 
have been avoided if more judgment had been used and the love 
of “ lumping ” been overcome. 
16. Marginella sagittata, Hinds. 
Hal. Bahamas to Brazil. 
M. fluotuata, C. B. Adams, from Jamaica, appears to be the 
same as this species. 
17. Triton Eidleyi, sp. n. (Plate XXX. fig. 1.) 
Testa late fusiformis, albida, obsolete trizonata, zonis supra 
varices aurantiis ; anfractus uormales, superne declives et leviter 
concavi, ad medium biangulati, interne constricti, costis longitu- 
dinalibus circiter 7(in anfract. ultimo subtuberculiformibus interne 
evanescentibus) iustructi, liris spiralibus tenuibus (in anfr. pen- 
ultimo 7-8) aliisque longitudinalibus tenuioribus concinne can- 
cellati ; apertura ovalis, alba ; canalis brevis, dextrorsum versus ; 
columella alba, superne arcuata, vix tortuosa, tuberculis vel liris 
transversis supra callum tenuem munita ; labrum compresse 
varicosum, intus liris duodecim in paribus ordinatis iustructum. 
Longit. 19 millim., diam. 10. 
LINN. JOURN. — ZOOLOGY, YOL. XX. 
38 
