309 
ovata, solidula, sublevigata, sordide fulva vel albido et fulvo 
zonata; spira conoidea, apice obtusula; anfract. 5 perconvezis, 
ultimo spira vie breviore, circa perforationem punctiformem 
distincte carinato ; apertura subobliqua, ovali ; perist. simplice, 
recto, margine columellari recedente, subpatulo. 
Long. 5, diam. 3 mill. 
Hab. Isle of Pines, Australian Seas (Macgillivray). 
32. HyprRoceNA EXPANSILABRIS, Pfr. 
Omphalotropis expansilabris, Pfr. Mon. Pneum. p. 312. (Mau- 
ritius. ) 
5. Descriptions or Two New SPECIES OF THE GENUS 
OrRTHOTOMUS. 
By Freprric Moors, Assist. Mus. East Inp1a Company. 
(Aves, Pl. LXXVI.) 
At a Meeting held in the early part of the present year, I had the 
honour of laying before this Society a monograph of this interesting 
genus, and since that time I have been favoured by my brother with a 
search, through the birds contained in the Derby Museum, which 
has resulted in the discovery of two additional undescribed species. 
These I now proceed to characterize. 
ORTHOTOMUS DERBIANUS, Moore. (Pl. LXXVI.) 
Forehead, crown and occiput dark ferruginous; back, rump and 
sides of neck ash-colour ; ear-coverts, throat and breast pale ash, 
with the centre of the feathers whitish; flanks ashy-white ; belly 
and vent dull white; wings brown, broadly margined throughout 
with yellowish-green; edge of shoulder pale brown; under wing- 
coverts rufescent-white ; tail much graduated, ferruginous-brown 
above, dusky at base, paler beneath, and without discernible terminal 
spots or band; thighs ferruginous; upper mandible horn-colour, 
lower mandible and legs pale. 
Length, 53 inches; of wing 2 inches; tail 23 inches; bill from 
frontal plumes $ths inch, to gape }$ths imch, and tarsus 5§,ths of 
an inch. 
Hab. Philippines ? (H. Cuming). In Derby Museum, Liverpool. 
Remark.—May be distinguished from all the previously known 
species by its greater size, and in having the ear-coverts, throat and 
breast ash-colour, with the centres of the feathers whitish. 
ORTHOTOMUS MACULICOLLIs, Moore. 
Forehead ferruginous, becoming dull ou crown; feathers of the 
occiput greenish-brown, faintly edged with black; nares, behind 
the eyes, a line under, with the ear-coverts and sides of neck ferru- 
ginous-white, each feather being edged with black; back and rump 
