1889.] MR. F.E. BEDDARD ON HOLOSOMA TENEBRARUM. ol 
as it was unknown to the fishermen, Capt. Macdonald fortunately 
preserved it. Through the kindness of Lieut.-Colonel W. Gostwyck- 
Gard the well-preserved skin found its way to me for identification, 
- and the following diagnosis of the species is taken from it :— 
D.7|3. A. 2|4. 
The shape of the fish is that of a Horse-Mackarel, but it is fuller, 
reminding one of a Pilot-fish, which it also resembles in the small size 
of its scales. The mouth is rather wide, the maxillary extending to 
the hind margin of the eye; both jaws are armed with a series of 
rather strong teeth, distantly placed. The dorsal spines are short 
and feeble, the anterior dorsal and anal rays forming a distinct lobe. 
Caudal deeply forked. Upper parts of a greenish-black hue, lower 
parts silvery, these two colours forming, where they meet, deep 
indentations by which they are dove-tailed into each other. 
By this peculiar coloration the fish can be recognized at a glance. 
Like other species of Lichia, it feeds chiefly on fishes of the Herring 
family, and the specimen here described was no doubt in pursuit of 
its prey at the time of its capture. 
6. Note upon the Green Cells in the Integument of 
Afolosoma tenebrarum. By Frank HE. Bupparp, M.A., 
F.ZS8. 
[Received February 5, 1889.] 
(Plate V.) 
This Worm has been described by Vejdovsky (‘ Thierische Organ- 
ismen der Brunnenwiisser von Prag’ (Prag, 1882), p. 61, and also 
‘System und Morphologie der Oligochaeten’ (Prag, 1884), p. 21)" as 
new, but it may possibly be identical with Nats aurigena of Kichwald 
(“*Erster Nachtrag zur Infusorienkunde Russlands,”’ Bull. Soc. 
Imp. Nat. Moscou, t. xx. 1847, p. 359). It has appeared lately 
in great numbers in a tank at the Society’s Gardens, near to that 
which produced a new species, Holosoma headleyi (see my paper 
““ Observations upon an Annelid of the Genus 4olosoma,” Proc. Zool. 
1 An American naturalist, Mr. F. W. Cragin, has recently described two 
species of Aolosoma (* First Contribution to a Knowledge of the Lower Inver- 
tebrates of Kansas,” Bull. Washbourn College Lab. 1887, no. 8, p. 31), and as 
the periodical is perhaps not generally accessible, I take this opportunity of 
calling the attention of systematists to the paper. The first species is named 
AB. stokesi, but 1 cannot discover any characters by which it can be differentiated 
from Af. quaternarium or Af. ehrenbergii. The chief points in the description 
are as follows :—“ Body cylindrical .... with eight articulations ornamented 
with bright salmon-red nuclei. ... most numerous near extremities ; setal 
fascicles in four rows... . each fascicle . . . . with four or five unequal simple 
bundles.” 
The second species, 42. leidyi, appears to be new and to be a near ally of 
Af. tenebrarwm. Tt has “‘ pale olive-green nuclei,” and possesses ‘‘sigmoid spine- 
like setee” in ad2 the seta-bundles; in the posterior segments the fascicles are 
composed entirely of these sete. In A. ¢enebrarwm, as stated above, these 
set are only found in the posterior bundles. 
4* 
