JOURNAL 
OF THE 
ROYAL MICROSCOPICAL SOCIETY. 
APEIL 1891. 
TEANS ACTIONS OF THE SOCIETY. 
III. — Report on an Earthworm collected for the Natural History 
Department of the British Museum, by Emin Pasha, in Equa- 
torial Africa. 
By W. Blaxland Benham, D.Sc., Assistant to the Deputy Linacre 
Professor of Comparative Anatomy in the University of Oxford. 
(Read 18£A February, 1891.) 
Plates III and IY. 
During the month of May in the year 1890, I was invited by 
Prof. Jeffrey Bell to examine a small earthworm received from Emin 
Pasha, and collected by him at Karague in Equatorial Africa. As 
a superficial examination at the Natural History Museum did not 
enable me to form any reliable opinion as to the genus of the worm, I 
asked that I might be allowed to examine it more thoroughly by means 
EXPLANATION OF PLATES III. and IV. 
Fig. 1. — Tlie worm, natural size, as preserved in spirit, a, anterior end. p, posterior 
end. 
„ 2. — Tlie posterior end enlarged, to show characteristic diminution in diameter 
immediately in front of the anus (p). 
„ 3. — A strip of the body-wall flattened out and mounted permanently to show 
the arrangement of the setse and position of the nephridiopores. The 
lines V V and D D indicate the ventral and dorsal mid-lines. 1, 2, 
are the inner or ventral couple of setse. 3, 4, the outer couple, np, 
nepliridiopore. 
The shading indicates the relative thickness of longitudinal muscles, 
which are more abundant ventrally than elsewhere. 
„ 4. — One of the setse, the hooked end being free. 
„ 5. — General view of the internal anatomy. The figure is diagrammatic, being 
composed from the study of the series of longitudinal vertical sections. 
The nephridia are figured only on the right side. 
ca 1 , the anterior calciferous glands, that on the right side being in 
somite IX. and on the left in somite X. ca 2 , the second pair of calci- 
ferous glands, ca 2 l, the posterior lobe of this gland in somite XII. 
g, gizzard, ces, oesophagus, bent upon itself, n, nephridia. pt.n, 
peptonephridium, partly hidden by the radiating muscles of the 
pharynx, si, sacculated intestine, p.gl, groups of cells forming 
“ pharyngeal glands.” 
„ 6. — The second pair of calciferous glands, supposed to be seen from behind 
1891. M 
