NEBELA ‘TUBULATA. i 09 
Nebela tubulata . 
Brown in Jrn. Linn. Soc., Zool. XXXII (1911), p. 79; in Scott. 
Natur. 1911, p. 229; op. c¢t. 1912. p. 122; op. cit. 1913, p. 186. 
. WarLes & PENnaRD in Proc. R. Irish Acad. XX XI, txv (1911), pp. 9, 
18, 49-50, pl. v, f. 27. 
WaAtLss in Scott. Natur. 1912, p. 61; in Jrn. Linn. Soc., Zool. XXXII 
_ (1912), pp. 125, 127, 140, 159; in Naturalist, 1913, p. 147. 
Test small, yellowish-brown in colour, flask-shaped, 
compressed, composed of circular and oval plates; test 
in broad view oval, terminating in a long, slender, 
usually parallel neck; aperture elliptical, rounded in 
broad side view, notched in narrow view and bordered 
by a thickened lip; plasma clear, colourless, contain+ 
ing food-particles and occasionally green alge cells; 
nucleus not large, containing several nucleoles ; pseudo- 
podia not observed. 
Length 55-74 4; breadth 28-48 4; aperture 10-16 p; 
thickness about two-thirds the breadth; length of 
neck one-third to one-half the total length of test. 
Hahitat—Sphagnum. 
ENGLAND.—Cumberland, Westmorland, and Lanca- 
shire (Brown); N. & W. Yorkshire; Derbyshire 
(Brown); Bedfordshire; Isle of Wight; Devonshire. 
Wates.—Nerth Wales. 
Scornbanp.—Dumfries; The Outer Hebrides; Perth- 
shire; St. Kilda and Wigtonshire (Brown). 
IreLAND.—Mayo and the Islands off Clew Bay; 
Inishbofin, Galway; Kerry. 
The typical form of this species’ with the parallel 
neck is easily recognized, but there is a distinct and 
well-marked tendency for the neck to assume a toru- 
lose form, in which case it has the appearance of a 
small form of NV. lageniformis, although usually less in 
size than var. minor of that species; in Ireland and 
the Seychelles both of these species occur in associa- 
tion, but in New York State only N. tubulata was 
found, and in several localities in South America only 
. N. lageniformis of normal size; this was also the case 
in Colorado, U.S.A., where the var. minor of that 
species occurs, but N. tubulata-has not been recorded. 
