320 Wright — Foraminifera of Down and Antrim. 



(Balkwill and Wright). It has also been recorded from two of the " Challen- 

 ger " gatherings — viz., off Christmas Harbour, Kerguelin Island, 120 fathoms, 

 and Station 238, in the very deepest part of the Pacific, 3950 fathoms.* It ia 

 indeed remarkable that a species which, in this climate, has been only met 

 with in shallow water and shore gatherings should, in the North Pacific, occur 

 at such a great depth. 

 Placopsilina cenomana, WOrbigny. (PI. xxvi. fig. 3, a, b.) 



Placopsilina cenomana, d'Orbigny, 1850, Prodr. Paleont., Vol. II., p. 185, 



No. 758. 



One large specimen of this rare species was found by Dr. Malcomson at 

 Rockport, between tides. The specimen figured is the only example which 

 has been obtained in Britain. 

 Verneuilina polystropha, Reuss, sp. (Dimorphous form. PI. xxvi. fig. 2.) 



Bulimina polystropha, Reuss, 1845, Verstein. Bohm. Kreid., part 2, 

 p. 109, pi. 22, fig. 53. 



This species is of frequent occurrence around our coast. An abnormal 

 form, in which the later chambers are arranged in a linear series, with a 

 simple round aperture, is occasionally met with in shallow water gatherings. 

 Mr. Brady considers it a dimorphous form of Verneuilina polystropha. 



Spiroplecta biformis, Parker and Jones, sp. 



Textularia agglutinans var. biformis, Parker and Jones, 1864, Phil. 

 Trans., Vol. civ., p. 370, pi. 15, figs. 23, 24. 



A few years ago this species was found for the first time in British water 

 by Dr. Malcomson, who obtained several good typical specimens at Rockport. f 

 A few specimens have since been found in Dublin Bay (Balkwill and Wright). 



lagena semllineata, Nov. sp. (PI. xxvi. fig. 7.) 



Test flask-shaped, with a long, ectosolenian neck, the lower extremity 

 furnished with a short projecting neck ; upper portion of the body of the shell 

 usually smooth ; lower portion ornamented with very numerous, closely-set, 

 longitudinal sulci ; neck marked with longitudinal lines, which occasionally 

 extend a little way down the shell. 



This very elegant form may be readily distinguished from L. semistriata 

 by the ornament on the lower portion being closely-set, longitudinal sulci, 

 instead of the strong costate ribs of the latter species. It has been found at 

 only a few localities, and is rare where it occurs. 

 Xiagrena bicarinata, Terquem, sp. (PI. xxvi. fig. 8, a, b.) 



Fissurina bicarinata, Terquem, 1882, Me'm. Soc. Ge'ol. France, Ser. 3, 

 Vol. ii., Mem. iii., p. 31, pi. 1, fig. 24, a, b. 



Professor Williamson, in his Monograph, has figured, under the name of 

 * Eeport Forams. H.M.S. Challenger, p. 335. 

 t See woodcut, Trans. Boy. Ir. Academy (Science), Vol. xxviii., p. 333. 



