ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
611 
The Chlorsemidse.* — Prof. W. A. Haswell’s observations on this 
family commence with an account of Coppingeria longisetosa g. et sp. n., 
found in Port Molle and off Darnley Island, and of two new species of 
Stylarioides , S. cindus and S. Horstii, both found in Port Jackson. The 
integumentary papillae are considered to be sensory in function. The 
various genera of the family exhibit a considerable amount of difference 
in the arrangement of the blood-vessels, but the general features appear 
to be as follows : — There is a circumintestinal sinus or plexns of sinuses 
in the wall of the alimentary canal ; this terminates anteriorly at the 
cardiac end of the stomach, and from it there runs forwards a large 
median dorsal vessel or heart, which is subject to regular peristaltic 
contractions, by which the blood is driven from behind forwards. In 
the peristomial region this vessel divides into two main afferent 
branchial vessels, each of which divides to give rise to the corresponding 
tentacular and branchial branches. In Coppingeria the excretory glands 
are of large size and deeply lobed ; they are prolonged for some distance 
backwards in the form of two comparatively narrow tubes. The glands 
are lined with an epithelium of large irregularly- shaped cells, with 
vacuolated protoplasm which contains numerous rounded granules of 
various sizes, some of which are stained deeply by hematoxylin. Cop- 
pingeria has two pairs of eyes which are situated on a lobe, which is a 
process from the prestomium between the bases of the branchiae. A 
group of nerve-cells, which forms an optic ganglion, projects into the 
interior of the oculiferous lobe; this ganglion is really a lohe of the 
brain, with which it is in immediate connection, so that there are no 
optic nerves. In SipJionostomum affine the pigment forms an almost 
complete capsule, with only a small opening. The tentacles of Cop- 
pingeria are marked by a deep longitudinal groove on the ventral 
surface. They are hollow and the cavity is divided by a dorsoventral 
longitudinal septum, in which runs the main blood-vessel. The cuticle 
is very thin, and the epidermis has the cells more elongated than those 
in the body ; many or all bear cilia. It is clear that we have here to do 
with an epithelium which is specialized not only in the direction of 
bearing cilia for driving food towards the mouth, but also in that of 
possessing numerous sensory cells, connected either with a specially 
developed tactile sense or with a sense of taste or smell. 
Development of Acanthodrilus multiporus-t— Mr. F. E. Beddard 
finds that the nephridia of the youngest embryos of this earthworm are 
paired tubes opening to the exterior near the lateral setae, and each is 
provided with a funnel which opens at the segment in front. They are 
found in all the segments of the body, but the first two segments have 
only one pair each ; these open to the exterior at the commencement of 
the stomodaeum. Later on, the second pair of nephridia, and, afterwards, 
one or two other pairs become connected with the first pair, and con- 
stitute the “ mucous gland.” The funnels of the nephridia, except those 
of segment xi.-xiv., become rudimentary, and numerous secondary 
external apertures are formed. The anal nephridia are a comparatively 
late formation ; they appear to open into the mesenteron and not into 
the proctodseum. 
* Proc. Linn. Soc. N.S.W., vi. (1892) pp. 829-56. 
t Quart. Journ. Micr. Sci., xxxiii. (1892) pp. 497-540 (2 pis ). 
2 t 2 
