252 MR. W. H. FLOWER ON A LESSER FIN-WHALE [May 24, 
lescentibus incisura obliqua a peristomate disjuncta ; apertura 
subascendens, subcircularis, verticalis, basi non protracta ; 
peristoma incrassatum, aurantiacum. 
Operculum tenue, corneum, arctispirum, suturis leviter elevatis, 
intus medio papillatum. 
Long. 8 mm., diam. 4°25 mm., apert. intus 2°50 mm. longa. 
Hab. Ad Cabayah et Paucian in parte septentrionali insule Luzon; 
detexit Dr. Carolus Semper. 
This interesting species is not nearly allied to any of the known 
Philippine Registoma species ; but in form it somewhat approaches 
R. simile, Sow. Its most striking peculiarity is the obliteration 
of the basal fissure in adult specimens, so characteristic of the genus 
Registoma, in this way forming a decided link between the two 
genera Callia and Registoma. The operculum also is extremely 
similar to that of Callia luérica in size as well as in construction. 
Pupina DIFFICILIS, O. Semper. 
T. pupeformis, ovato-cylindrica, nitidissima, glabra, corneo-ru- 
bella; spira obtusula; sutura levis, callosa, submarginata ; 
anfr. 5, planati, ultimus spiram subequans, valde descendens, 
ad aperturam brevissime ascendens ; apertura circularis, sub- 
verticalis, basi protracta; lamella parietalis minuta, acuta, 
intrans, callo subcireumscripto, anfractu ultimo affixo ad basin 
columelle decurrens, cum peristomio canalem angustum formans ; 
columella subverticaliter dissecta; peristoma albescens, incras- 
satum, margine dextro intus superne subtuberculato. 
Operculum tenue, corneum, arctispirum, suturis subelevatis. 
Long. 7 mm., diam. 3°50 mm., apertura intus 1°50 mm. longa. 
Var. 3. Minor, long. 5°50 mm. 
Hab. In “ Palaos” insulis ad ‘ Pelelin, Aibukut ;’’ detextt Dr. 
Carolus Semper. Varietas formee typice ad Aibukut lecta multo 
seepius, differt statura, peristomio minus incrassato, apertura basi 
minime protracta. 
This small, lively-coloured species appears to stand near P. bica- 
naliculata and P. keraudreni ; but I think it is different from either. 
6. On a Lesser Fin-Wuate (BALZNOPTERA ROSTRATA, Far.) 
RECENTLY STRANDED ON THE Norrouxk Coast. By W. H. 
Frower, F.R.S. erc., ConSERVATOR OF THE MUSEUM OF 
THE RoyaL COLLEGE OF SURGEONS. 
We have at present so little definite information upon the specific 
characters and geographical distribution of the Cetacea, that it is dé- 
sirable that no opportunity should be lost of putting on record any 
facts which may contribute to the better knowledge of the natural 
history of even the most common species of this interesting group of 
the Mammalia. No further apology will therefore be necessary for 
placing before the Society some observations upon a specimen which 
has recently been added to the Museum of the Royal College of 
Surgeons through the kindness of Mr. J. H. Gurney, M.P. 
