MARSHALL: ADDITIONS TO "BRITISH CONCHOLOCA'." I25 



scribed species from the Portugal coast, dredged by the "Porcupine," 

 has a still closer affinity with this shell, but the mouth is different. 



E. curva Monts. (/. Conch., vol. 7, pp. 381-2, 1894). — Guernsey, 

 Scilly, and Land's End. Distribution — Adriatic, Marseilles, Sardinia, 

 Naples, Palermo, and Algeria (Monterosato). According to Professor 

 Dall, this is E. arena ia C. Ad., an exotic species of anterior date. 



After a personal examination of E. latipes Watson in the National 

 Collections, I still consider that species very closely allied to, if not 

 identical with, this one. One of my specimens has an angulated base, 

 another has the spire nearly straight, and the discovery of further 

 examples discloses a considerable amount of variation. All the 

 specimens from Guernsey, and a few from Scilly, belong to a much 

 smaller form, agreeing in size and proportions with an extreme form 

 of E. philippii to be noticed from Guernsey, Scill}', and the west 

 of Ireland, and the two can easily be confused; but in E. curva the 

 apical whorls have a sudden twist like a partial dislocation, the whorls 

 are less compressed, and the sutural lines more deeply cut. 



K. philippii Weink. — This and E. intermedia run into an amazing 

 number of forms, and have served as the groundwork for many so- 

 called species and varieties. No one who is not conversant with the 

 two species can imagine their manifold variations in size and shape, 

 and the difficulty of assigning them to their true limits. The species 

 consists in the main of two principal forms — the one being a line in 

 length, with whorls slightly convex, well-defined sutural lines, a broad 

 and rounded base, the spire bending rather abruptly near the apex, 

 which is blunt, and with a contracted mouth not projecting beyond 

 the outUne of the spire. It is the normal form in the Channel and 

 Scilly Islands, the south of England, and west of Ireland. It has 

 some affinity to E. nana Monts. (which Gwyn Jeffreys by mistake has 

 mixed up with it in the "Porcupine" records), and extreme examples 

 of it approximate to E. curva. The other form is a line and a half in 

 length, gracefully curved and tapering, whorls flattened, the apical 

 one suddenly contracting to a pointed tip, the aperture larger, patulous, 

 and projecting, and the base more or less angulated. This is from 

 the north of England, the Hebrides, and Shetlands, but is also 

 occasionally found in the south. It differs in all its characters from 

 the southern one, more so than in many acknowledged species of 

 Eulima, but the intermediate forms are so numerous and diversified 

 as to make it impossible to draw a line between them, and the two 

 forms very probably indicate different habitats. None of the published 

 figures in my opinion represent either of them accurately, but Forbes 

 and Hanley's are the best, and represent the northern or slender form ; 

 Gwyn Jeffreys' has the spire too attenuated and the suture too sloping. 

 The latter author has defined the various forms thus— "Some speci- 



