MITROMORPHA 71 
I have examined numerous specimens of M. (A.) alphonsiana from Anaa I and 
Mururoa Atoll, Tuamotus, and the species can be distinguished at a glance from 
metula on the basis of its constant violet-mauve banding and bordering brown 
quadrate spots. Hervier (1899) described the protoconch as having 2-3 smooth 
embryonic whorls, and the protoconch is actually conical, multispiral, and consists of 
234-3 smooth embryonic whorls. 
The specimen illustrated by Drivas & Jay (1986) as alphonsiana does not appear 
to be that species. For further discussion see below under M. (A.) salisburyi 
Cernohorsky, 
Mitromorpha (Anarithma) salisburyi (Cernohorsky, 1978) (Figs. 21-25) 
1978. Mitrolumna salisburyi Cernohorsky, Nautilus 92(2):66, figs. 10-12; 1978 Cernohorsky, 
Tropical Pacific mar.shells p.163, pl.58,fig.6. 
TYPE LOCALITY. Maile Pt., Oahu, Hawaiian Is, 32 fathoms (59 m). 
DISTRIBUTION. From the Hawaiian Is to the Tuamotu Archipelago. 
Type specimen. The holotype is in the Auckland Institute and Museum No. TM-1349, 
length 4.0 mm, width 2.0 mm (Figs. 21,22). 
Kay (1979) considered M. (A.) salisburyito be asynonym of M. (A.) alphonsiana. 
Since these two species differ from each other quite appreciably, it is open to 
speculation of Dr Kay examined the correct type specimen of alphonsiana (her 
description is “worn and smooth” which the lectotype is not) or if alphonsiana really 
does occur in the Hawaiian Islands. 
Since the original description of M. (A.) salisburyi more specimens have become 
available from Anaa I and Mururoa Atoll, Tuamotus, where the species is sympatric 
with M. (A.) alphonsiana without any intergrading specimens having been found. The 
two species differ as follows: 
M. (A.) salisburyi is ovate-biconic, with the aperture being about the same height 
as the spire, the protoconch consists of 3-34 glassy, golden-brown embryonic whorls, 
the sculpture is decidedly more nodulose, the fused posterior denticles on the posterior 
of the outer lip are prominent, the “V-shaped groove is deeper and the siphonal notch 
is shallower and almost spout-shaped. The base colour is orange-brown, sutural 
nodules are rosy-mauve, on the dorsal side the subsutural white axial riblets alternate 
between long and short, there are 2 narrow rosy-mauve bands on the body whorl and 
the spiral cords towards the base have small reddish-brown spots. 
M. (A.) alphonsiana has a more slender shell with a longer, narrower aperture 
and shorter spire, a protoconch of 234-3 milky-white or glassy-white embryonic 
whorls, the sculpture is more discreet and not nodulose, the outer lip is slightly 
constricted centrally, the fused posterior denticles and swelling on the outer lip are less 
prominent, the “V”-shaped groove is more shallow and the siphonal notch is more 
prominent. The base colour is white, penultimate and antepenultimate sutural row of 
