TROCHUS. 321 
former to be the earlier and tuberculated labio represented, and 
so designated, by Rumphius, from whom the specific appellation 
was derived. Strange to relate every one of the references 
exhibits a different species; Lister's drawing, however, reminds 
one of that of Rumphius, and Argenville’s a little of those in 
Gualtier. 
Grochus tuber, 
Some partially erased numerals on a young individual of the 
Trochus tuber of authors (Chemn. Conch. Cab. vol. vy. pl. 165, 
f. 1572), in the Linnean collection, evidence that the specimen 
was the type of one of the species of the ‘Systema,’ and, 
since its features correspond with those of no other shell 
described in that publication, it is manifest that it must 
be regarded as the representative of tuber. The immature 
state of the example accounts for the published characters, 
which are by no means suitable for the adult shell. Regen- 
fuss was correctly referred to—hence probably the established 
recognition — but the illustrative figure of Argenville would 
have been I, not R as quoted. The published locality was 
erroneous; “Jamaica” has been written in the revised copy. 
Trochus striatus. 
The examples preserved in the marked receptacle of this 
species in the Linnean cabinet precisely coincide with those 
forwarded to me by Dr. Philippi, as the shell recognised by 
him for it in his descriptive list of Sicilian shells (vol. 1. p.176 ; 
vol. ii. p. 150). It has been delineated in the present work 
(pl. 5, f. 7), as I cannot call to mind an exact portraiture of the 
specimens, 
Trochus conulus. 
The synonymy of this shell is very faulty. Gualtier, f. N, 
having been quoted, likewise, for the preceding species, was 
ae 
