389 Part H1—Highteenth Annual Report 
The peculiarity in the fifth thoracic feet in Botryllophilus consists 
mainly in their position on the last thoracic segment. Instead of occupy- 
ing a position more or less on the ventral aspect of the segment, as is 
usual amongst the copepoda, the position of the fifth feet is more or less 
round towards the dorsal aspect, and as they each consist of a single- 
jointed, elongated, and somewhat curved spine-like appendage which 
projects more or less out from the body, they impart to the copepod a 
rather curious appearance. 
After the above note on Botryllophilus had been sent to the printer, 
several specimens of the copepod were obtained 7m sitw in a specimen of 
Botrylius sp. collected at Station X. in the Moray Firth on the 16th of 
June 1898. Some of the specimens carried a globular ovisac on the dorsal 
aspect between the fifth feet as stated above, but the ovisacs appear to be 
easily detached ; they were of a pale cream colour, due, probably, to the 
long immersion in spirit of the Botryllus. 
Canuella perplexa, T. and A. Scott. 
1893. Canuella perplexa, T. and A. Scott, Ann. Scot. Nat Hist , 
vol, 1: %p, 02. (PIS ties: 13. 
This copepod was obtained in shore gatherings of Crustacea collected 
at Cumbrae, Firth of Clyde, between tide-marks May 6th, 1899, and in 
shore pools at Inverkip on the 13th of the same month. The species 
appeared to be moderately rare at both places. Canuella is widely 
distributed, but is apparently more frequent amongst weed and;where the 
bottom is of a sandy nature. 
Lictinosoma gracile, T. and A. Scott. 
1896. Hctinosoma gracile, T. and A. Scott, Trans. Linn. Soc. 
(2. z.) vol. vi., p.429. Pls XXXVI, XXXVIL, XXXVI 
A few specimens of this very small species were obtained in shore 
pools at Inverkip, Firth of Clyde, May 13th, 1899. Hctinosoma gracile 
has already been recorded from near Sanda Island, Firth of Clyde; it 
appears to be widely distributed, but being very small is easily over- 
looked. 
Tachidius brevicornis (Miiller). 
1776. Cyclops brevicornis, Miiller, Zool. Dan., Prodr, (2414). 
Though Tachidius brevicornis appears to be generally distributed, there 
are apparently few or no records of it as a member of the Clyde fauna. 
Being a brackish-water species, it need not be sought for except where 
such conditions exist, and as there are few shores around the British 
Islands where brackish-water pools are not to be found, the distribution 
of the species is correspondingly extensive. There are two species of 
Tachidius recorded for Britain, but the one referred to is readily 
distinguished by the structure of the fifth thoracic feet, which are of the 
form of two comparatively broadly, roundish plates, the free margins of 
which are fringed with sete. The species was found in shore pools at 
Cumbrae in May 1899. The second species Zachidius littoralis, Poppe, 
has already been recorded from Hunterston, Firth of Clyde.* 
Amymone nigrans, T. and A. Scott. 
1894. Amymone nigrans, T. and A. Scott, Ann. and Mag, Nat. 
Hist. (6), vol. xui., Pl. VIIL, figs. 1-7. 
This curious copepod is rather less than half a millimetre across the 
* Proc. Nat, Hist, Soc. Gilasg., vol. V, (N.8.), p. 851, 1900. 
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