Report on the Crustacea Schizopoda of Ireland. 220 
Nyctiphanes Couchii (Bell). 
Plate xvi., fig. 1; and fig. I., p. 226. 
Thysanopoda Couchi, Bell, ‘‘ British Stalk-eyed Crustacea,” 1853, p. 346. 
Bell’s figure, the only drawing of the species with which we are acquainted, is 
on a very small scale, and not wholly satisfactory. By the kindness of Mr. C. 
Green, B.A. (T.C.D.), we are able to give a more detailed illustration of the 
whole animal, the subject in this case being a male from Valentia Harbour. We 
are indebted to Mr. M. I. Woodward for a dissection and drawing of the branchial 
apparatus of the same specimen, and of the copulatory processes of the first 
pleopods of this and the preceding species. We take the subjoined diagnosis, 
with slight verbal alteration, from Norman. 
Carapace without lateral spines, its lobes not produced over the eyes. Rostrum 
broadly and bluntly triangular, concealing the base of the eye-stalks. A spine 
over the base of the ¢e/son and a small simple ventral preanal spine. In the male 
the antennules, in addition to the usual reflexed membranous leaflet at the end of 
the first joint, have another reflexed membranous leaflet at the end of the second 
joint of the peduncle, the distal portion of the leaflet being cut into digitated 
processes. 
The copulatory apparatus of the inner plate of the first pleopod (fig. I., p. 226, 
8) in a specimen of 12 mm. is not unlike that of WV. australis, G. O. Sars (ef. Sars, 
Challenger Report, xu., Pl. xxi., fig.6). It is much less complicated than in 
full-grown WV. norvegica (cf. fig. I., 9). We have had no opportunity of exami- 
ning males of the last-named species at sizes corresponding to what appears to 
be the fully-developed condition of WV. Couch. (See Note added in Press, p. 250.) 
Not in the Survey Collection. 
Valentia Harbour, surface, September 30th, 1898, per Miss C. Delap. 
Previous Irish Record.—Ofti Valentia (A. M. N.*). 
Distribution.—Banff ; coast of Cornwall (A. M. N.*): off Penlee Point, and in 
Cawsand Bay, Plymouth: Firth of Tay (per W. T. Calman). 
Genus Thysanoessa, I’. Brandt. 
Thysanoessa neglecta (Kroyer). 
Survey.—Station 1380, Kenmare river, off Sneem, 24 fathoms, mud. March 30th, 
1891 (in net attached to trawl, day-time). 
Station 144, west of Inishmore, Aran Islands, about 45 fathoms, April 7th, 189] 
(in large tow-net, near surface, midnight). 
