441 
Mr. Hinds referred this shell to his Nucula crispa; it is very di- 
stinct, however, from the delineated type. 
SoLeNnELLA cuminelI. T. S. norrisiz simillima, sed antice mul- 
tum longior, et tantum rotundato-attenuata; radii impressi obso- 
leti. Extremitas postica latiuscula, obsolete biangulata, vel ro- 
tundato-subrhomboidalis. Margo dorsalis anticus convexus, satis- 
que declivis; posticus brevis, virque declivis. Dentes postici 
permulti. 
Long. 12 poll. 
Hab. Insule Falklandice. 
Mus. Cuming. 
The most striking peculiarity is that the anterior side, which is 
the shorter in S. zorrisia, is in this species the longer. 
Nucvuta mauasarica. T. minuta, trigona, haud elongata, satis 
obliqua, tantum ad umbones angustos et elevatos ventricosa, superne 
rectungulata, nitida, undique concentrice costellata: sulci intersti- 
tiales lyris radiantibus exilibus ornati. Latus posticum (pro 
genere ejus) haud breve, ad extremitatem subangulatam prominens. 
Margo dorsalis uterque declivis et rectus: ventralis regulariter 
arcuatus, haud sinuatus, intus crenatus ; cardinalis latus. Dentes 
pauci: fossa cartilaginis perparva, haud obliqua. 
Long. + poll. 
Hab. Cochin. 
Mus. Hanley. 
Found in the mouths of dead Solariform Margarite. 
Nucuta antipopum. T. valde obliqua, elliptica, postice recte 
truncata, antice rotundato-attenuata, mazime inequilateralis, 
valida, subventricosa, levis, cute nitida pallide olivaceo-lutescente 
vel cinerascente induta, intus argentea. Margo dorsalis antice 
convezus, declivis ; ventralis arcuatus, integer, postice haud sinu- 
atus et ibi conspicue acclivis, cum margine postico rectiusculo an- 
gulum valde obtusum formans. Nates parve, acute, haud promi- 
nentes. Lunula magna, concentrice subrugosa, planulata, angulo 
definita. Area inconspicua. 
Var. Extremitas antica tantum rotundata ; postica aliquantum pro- 
minens, magisque angulata. 
Long. 2 poll. 
Hab. Australia. 
Mus. Hanley. 
This may possibly be the N. obliqua of the ‘ Voyage de la Vénus’; 
it is not, however, the species so termed by Lamarck. 
Nucvuia M‘ANDREWII. T. anguste subovata, in medio latior, per- 
tenuis, semipellucida, valde compressa (nisi ad umbones), cute 
nitidissima cinerea induta, undique levis. Extremitas antica 
superne rotundato-obtusangularis ; postica minime brevis (pro 
genere ejus), fere in medio rotundato-acutangularis. Margo dor- 
salis antice rectiusculus, haudque declivis ; ventralis integer, mul- 
