292 SPECIES OF THE SYSTEMA. 
part of the aperture as devoid of the internal sinus which is 
formed in gigantea by the cessation of the teeth. I consider, 
then, the R. tuberculata to be the original M. reticulatus, an 
Opinion sanctioned by Murray, the pupil of Linneus, who has 
figured that species for it in his ‘Fundamenta Testaceologie.’ 
The introduction, in the synonymy attached to the species in 
the twelfth edition, of a drawing of Cancellaria (Phos) senticosa 
was unimportant, since that shell does not at all answer the 
requirements of the diagnosis; it was possibly a typographical 
error, and has been corrected in the revised copy. An utterly 
different species is mentioned by the same name in the ‘Museum 
Ulrice,’ where the recorded details do not agree with any of 
the three just spoken of. Judging from the expressions “ labium 
interius longitudinale, membranaceum, patens, reticulatum” 
and “affinis sequenti” (M. anus), I more than suspect that the 
Triton mulus was there intended. This conclusion, I perceive, 
has been independently arrived at by Mérch, who, without com- 
ment, has simply published them as synonymous in one of his 
suggestive catalogues (Kierulf). 
Uttvexr ants. 
The Triton anus (Sow. Genera Shells, Trit. f. 2) of authors 
is marked for this shell in the Linnean cabinet. From the 
length and accuracy of the synonymy, and the peculiarity of 
aspect depicted by the description, the species has been readily 
identified by naturalists. 
sMurex vicinus. 
The Murex ricinus was pictorially defined in the tenth edition 
of the ‘Systema,’ where the brief diagnosis was in harmony 
with the excellent figure of Gualtier, and the tolerably charac- 
teristic one of Rumphius. They both represent the Ricinula 
arachnoides, of which an example (Encycl. Méth. Vers, pl. 395, 
f. 3) still remains in the Linnean cabinet, with the significant 
numerals inscribed upon it. In his revised copy our author 
has inserted “utrinque” before “ dentata.” 
