Two new species of Amalda 5 
Notes: Amalda trippneri belongs to the A. hilgendorfi species-complex (see Kilburn & Bouchet 1988: 
285). It is closest in appearance to Amalda rubiginosa (Swainson, 1825) and A. hilgendorfi (von 
Martens, 1897). Indeed, A. trippneri is doubtlessly the species recorded from the Saya de Malha 
Bank in 150 fathoms by Melvill (1909) as Ancilla rubiginosa, although the actual specimen (“one 
broken shell”) cannot now be traced (it is not in the Melvill collection (National Museum of Wales), 
Nor in that of the Natural History Museum, London). The true Amalda rubiginosa (РІ. 2) has a lower 
Spire than A. trippneri (aperture length/total length 0.50-0.54, spire angle 39°-47°, n = 14), a 
sharper apex with the entire protoconch exposed, and fine microshagreen sculpture on the secondary 
callus. It should be noted that the correct name for the Baryspira rubiginosa of modern authors is 
Amalda albocallosa (Lischke, 1873), and that the true habitat of the very different A. rubiginosa 
Temains uncertain. All specimens examined by me originate from 19th century collections, and most 
аге labelled “Сһіпа” (the type locality), which is restricted to "Hong Kong" in the case of two 
examples from the Lombe-Taylor collection, housed in the Natural History Museum (London). This 
locality may prove to be correct, as the holotype of Amalda (Alocospira) hayashii Ninomiya (1988: 
145, pl. 1, figs 7-8) from Amami-Oshima, southern Japan, is very possibly based on an immature 
Individual of A. rubiginosa. 
Amalda hilgendorfi, a form or subspecies of which occurs off Madagascar, lacks spiral lirae on the 
Spire, the spire callus is distinctly microshagreened, the ancillid groove is barely impressed and the 
anterior fasciolar band bears a median ridge. 
Etymology: At Dr Alf’s request I have named this species in honour of Mr Edmund Trippner, well 
nown among German collectors for his helpfulness and generosity. 
Acknowledgements 
I am indebted to Mr Henrikas Danila and Dr Axel Alf for sending me this material. I thank Dr John 
aylor of the Natural History Museum (London) for permitting me to study material in that 
collection, and Ms Kathie Way for sending photographs of the holotype of Ancillaria rubiginosa. 
Mrs Linda Davis helped in the preparation of plates, and Drs D.G. Herbert and A. AIf kindly read 
the manuscript, 
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