892 Mr. A. G. Butler on new Species 
Hist.’ vol. vii. no. 4, p. 489, several specimens in which the 
proboscis diverges at some distance above the ventral disk into 
two distinct branches. This may be, in some instances, the re- 
sult of accidental development, but is more frequently due to 
an obstruction of the anal canal. I found a specimen of Bato- 
crinus longirostris in which, close to the vault, the proboscis 
branches into two equally heavy tubes; and there appears 
immediately above their junction a strong inflation or kind of 
abscess. In another specimen a stoppage or disconnexion 
must have occurred within the body, for a second proboscis 
was formed at the ventral disk, developed here, as in every other 
instance, within the anal series or posterior side of the Crinoid. 
Tn one remarkable specimen a second proboscis breaks forth 
even at the lower end of the calyx, just above the basal plates. 
The pressure against these parts must have been enormous ; for 
it caused the destruction of an entire ray, the plates of which 
are bulging out, forming, together with the anal plates, and in- 
termingled with smaller plates such as ordinarily compose the 
proboscis of this species, a large elongated cavity with a rather 
large aperture. All these instances give evidence of a pressure 
from within, and indicate that the outside opening of Paleozoic 
Crinoids was solely an ejective organ, and could not have had 
oral functions. I have already mentioned that the anus is 
separated from the radial series by deep partitions at the inner 
surface of the vault, thus excluding any connexion with the 
upper end of the digestive organ. Moreover the casts of 
Actinocrinus show that the course of the proboscis is directed 
toward the posterior side; and the development of the abnormal 
proboscis occurs invariably in the anal series. It is therefore 
hardly necessary to argue on Dr. White’s supposition, that the 
abnormal second proboscis, wherever it occurs, might have 
served as buccal orifice, as such a theory is unsupported by 
analogy. 
[To be continued. | 

XLV.—Descriptions of new Species of Heterocera from 
Japan.—Part III. Geometrites*, By ARTHUR G. BUTLER, 
PLS. feZ.12, eee: 
Urapteride. 
153. Urapteryx veneris, n. sp. 
White; primaries crossed by three brown stripes, which 
converge towards the inner margin; a discocellular litura of 
* The Geometrites described in ‘ Illustrations of Lepidoptera Hetero- 
cera’ are not included in this paper. 
