MILAX GAGATES. 145 
Var. rava Williams, Shell Coll. Handbook, 1888, p. 89. 
Limax gagates var. Y Clarke, Aun. and Mag. N.H., Nov. 1843, pl. xii., ff. 18-20. 
Amalia gagates var. maderensis Ckll., Ann. and Mag. N.H., 1891, p. 334. 
Amalia gagates var. ascensionis (Lesson) Ckll., op. cit., p. 335. 
Amalia gagates var. ascensionis {. helene Ckll., op. cit., p. 336. 
Amalia gagates var. ascensionts f. tristensis Ckll., op. cit., p. 336. 
ANIMAL drab-coloured, slightly fuscous, the mantle often paler than the back. 
The sub-var. maderensis Ckll., sub-var. ascensionis Lesson, with the forms helene 
and fristensis, are all apparently forms of the var. rava, but the three latter forms 
have intimate relationship also with the var. plumbea, and constitute a series of 
connecting links between the vars. rava and plumbea. 
The sub-var. maderensis CkIl. is of an uniform dark-brown, including the foot; 
mantle blackish and oval, keel not strong, and median-area of sole more than twice 
as broad as either lateral zone. 
The sub-var. helenge Ckll. is dull palish ochreous, with simple reticulate groov- 
ings, the interstitial spaces being similarly but still more delicately sculptured ; 
back darkish purplish-grey, with a strong but not obviously paler keel extending 
the whole length of the back; neck bluish-grey above; mantle purplish-grey, except 
on the sides, below the suleus, which are pale ochreous, rather sharply defined from 
the dark part by the suleus; median-area of sole not quite twice as broad as either 
lateral area. 
The sub-var. tristensis Ckll. has the rug rather strong, back and mantle 
plumbeous, sole and sides of body yellowish. 
The sub-var. aseensionis Lesson has a general resemblance to the two preceding 
related sub-varieties. 
Channel Isles—Var. rava, Guernsey, numerous, Aug. 1891! B. Tomlin. 
Cornwall W.—Var. rava, garden, Truro, April 1886! J. H. James. 
Devon S.—Var. rava, swarming in Mr. MeMurdo’s garden, Topsham, Aug. 
1892, L. E. Adams. 
Hants S.—Var. vava, common at Christchureh, Jan. 1887! C. Ashford. 
Middlesex—Var. rava, garden, Hornsey, Oct. 1891! H. W. Kew. Crouch Hill, 
Oct. 1891! G. K. Gude. 
Oxford—Var. rava, near Little Bourton (W. E. Collinge, Conch., 1891, p. 18). 
Monmouth— Var. rvava, Shirenewton Hall, June 1886 ! E. J. Lowe. 
Worcester— Var. rava, garden, Stourport (Williams, Science Gossip, May 1886). 
Carnarvon—Var. rava, Conway Castle, Jan. 1888! L. E. Adams. 
Anglesey—Var. vava, Puttin Island, Aug. 1891! T. Shankland. 
Cheshire—Var. rave, nursery gardens, Sale, Feb. 1895 ! and Ashton-on-Mersey, 
Oct. 1892! C. Oldham. 
Lancashire Mid—Var. rava, Garstang, Sept. 1888 ! W. H. Heathcote. 
Edinburgh—Var. rava, Levenhall, plentiful, Aug. 1886 ! W.D.R. 
Antrim—Var. rava, Cushendun, May 1886! Rev. S. A. Brenan. Murlough Bay 
Glen, June 1899, R. Welch. 
Down—Var. rave, in lily of the valley beds, Oakleigh, Ormeau Park, Belfast, 
1897, A. W. Stelfox. Common in garden, Sydenham House, April 1898, and 
Downpatrick Cathedral grounds, March 1898, R. Welch. 
Louth—Var. rava, Dundalk, Jan. 1904, C. Oldham. 
Dublin—Var. rava, Kingstown, May 1886! W. F. de Vismes Kane. White- 
ehureh, Oct. 1890, R. F. Scharff. 
Queen’s Co.—Var. rava, La Bergerie, common (B. J. Clarke, op. cit., p. 339). 
Sligo—Var. rava, Carrahubback, abundant under stones on low grassy banks, 
near the sea-shore, Oct. 1892! Miss Amy Warren. 
Mayo W.—Var. rave, Ballina, Oct. 1890, R. F. Scharff. Slievemore village, 
Sept. 1888! (J. G. Milne, J. of Conch., Oct. 1891). 
Madeira—Sub-var. maderensis Ckll., a specimen in the British Museum, labelled 
‘*Madeira, Mr. Mason” (T. D. A. Cockerell, op. cit., p. 334). 
Ascension—Sub-var. ascensionis Lesson (T. D. A. Cockerell, op. cit., p. 335). 
St. Helena—Sub-var. helene Ckll., a specimen in the British Museum, labelled 
“St. Helena, J. C. Melliss” (T. D. A. Cockerell, op. cit., p. 336). 
Tristan d’Acunha—Sub-var. fristensis, a specimen in the British Museum, 
labelled ‘* Tristan d’Acunha, Challenger Collection” (T. D. A. Cockerell, op. cit., 
p. 336). 
Juan Fernandez—Sub-var. ¢ristensis, six specimens in the British Museum, 
labelled ‘Juan Fernandez, Challenger Collection” (T. D. A. Cockerell, op. cit., 
p. 338). 
