492 Mr. G. J. Arrow on the 
of specimens of this form, I think it well that it should have 
a specific name, although it has hitherto been placed as an 
unnamed variety of J. patula, which is a smooth shell, 
without any signs of longitudinal lire. 
Mitra fidis, Sowerby, sp. n. 
LVIII.—On the Lamellicorn Coleoptera of Larat Island. 
By GiuBert J. ARRow. 
(Published by permission of the Trustees of the British Museum.) 
DuRING a visit to Larat Island, in the Tenimber Group, 
between Timor and New Guinea, in 1907, Mr. F. Muir made 
a collection of beetles which is probably the most complete 
yet brought from that island, and strikingly illustrates the 
immense number of yet unknown forms awaiting col- 
lectors in the innumerable islands of the great archipelago. 
Most of the families represented in the collection remain still 
unworked, but those which have been studied by experts 
contain a considerable proportion of new species. A few of 
these have already been described by different specialists, 
and I now give an enumeration of the Lamellicornia, Two 
species received by the British Museum from other sources 
have been added. The Lucanide, of which there are several 
species, are not yet identified. 
Passalide. 
Gonatas naviculator, Perch. 
Gnaphalocnemis monticulosus, Smith. Found by Dr. H. O. Forbes im 
1888. 
Scarabeide. 
GEOTRUPIN”. 
Bolboceras lowert, Blackh., var. laratinum, noy. 
TlyBosorIn&, 
Pheochrous emarginatus, Cast. 
a 
