Birds of Celebes; Bucerotidae. 
237 
Egg. Von Rosenberg, to whom a rotten egg of this species was brought, describes it as 
rongb-shelled, dirty white, and of the size of a Pigeon’s egg (c 8). 
Nest. Meyer (c 9) was informed that “it makes its nest in hollow-trees or between wood^ 
and lays two eggs”; but particulars as to whether the female is walled in with mud 
by the male are wanting. 
Distribution. Celebes — Minahassa (Reinwardt ad, Porsten c 5, etc.); Lembeh Id. (Nat. 
Coll.); Paguatt, Gulf of Tomini (Meyer c 9)\ Mapane (P. & P. Sarasin 2)\ Tonkean, 
E. Celebes (Nat. Coll.); Macassar (Wallace g 1); Tjamba (Platen c 10]\ Tawaya, 
W. Celebes (Doherty g 2). 
Mr. Elliot (I) adds “Malacca” as a locality of this species with Meyer’s name 
as collector, and Dr. Duhois likewise records a specimen, or specimens, in the 
Brussels Museum as having been obtained by Meyer in Malacca. Meyer never did 
any collecting in Malacca, and the notice of this locality rests upon mislabelling due 
to other hands than his. 
The genus Hydrocissa was, as Mr. Elliot says (Bucerot. pi. XI, text), 
proposed by Bonaparte (d 1) for various species “not nearly related beyond 
the fact that they belong to the same family”. Mr. Elliot and Mr. Grant agree 
in placing them in three distinct genera, two of which, Anthracoceros and Ano- 
rrhmus were made by Reichenbach a little prior to Bonaparte, the first con- 
taining his Hydrocissa monoceros, pica and violacea (synonyms of A. coronatus) and 
malayana^ while Hydrocissa galerita is the type of Anorrhinus^ a genus which 
Grant finds to be represented by this species alone. The sixth and last species 
of Bonaparte’s Hydrocissa^ H. exarata of Celebes, is thus alone left in the 
genus. By Rule 5 of the Stricklandian Code Elliot would be fully justified 
in allowing the generic name Hydrocissa to stand for exarata^ no type of the 
genus having been ah first specified by Bonaparte, though monoceros stands first 
in the list, were it not that four years later Bonaparte in his Conspectus Voln- 
crum Anisodactylorum, p. 2, distinctly signifies monoceros as his type by placing 
that species (with its synonym, pica) alone in the genus Hydrocissa and by 
relegating exaratus to the genus Anorrhimis Rchb., thus making it unlawful for 
any subsequent author to transfer the name Hydrocissa to any other part of the 
original genus (see Rules of Zool. Nomencl. 1863 § 5). Grant, therefore, rightly 
makes Hydrocissa a synonym of Anthracoceros \ but, as we cannot agree with him 
that Buceros exaratus belongs to the Philippine genus, Penelopides^ we find it 
necessary to give it a new generic name, Bhahdotorrhinus . 
R. exaratus, the sole species of this genus, has in Elliot’s opinion “no ally 
in the family, and is remarkable for its crest-like casque, hardly to be distin- 
guished from the maxilla, and is moreover peculiar for the lateral grooves run- 
ning its entire length. It ... is probably the sole survivor of a subgroup of 
this family” (f I). 
Penelopides has a small, smooth, somewhat tubular-looking epithema, and the 
basal part of the bill is furnished with a thin side-plate on one or both man- 
dibles, which is notched or ribbed, as is sometimes the case in the lower man- 
