78 MONOGRAPH OF BRITISH LAND AND FRESHWATER MOLLUSCA. 
Susp-Genus Lehmannia Heynemann. 
Limax flavus Linné. 
1694 Limax succini colore, albidis maculis instgntias Lister, Exercit. Anat., t. 1. 
1758 = oe Ibi Sy. st. Nat. , ed. x., vol. i., p. 652. 
1801 — variegatus Drap., ley Moll., p. 103. 
1828) — antiquorum Sow ae Genera of Shells, ii., p. 158. 
1837 — maculatus Nunneley, Trans. Phil. and Lit. Soe. Leeds, i., p. 46, pl. 2, f. 3.- 
1844 — wmbrosus Philippi, ‘Enum, Moll. Seles Iga: 102. 
1862. — deshayesii Bourg., Spice. Mal., p. 36, pl. 1, ff 1, 
1863. — campanyoi Boure., Rév. et Mag. Zool., p. 179. 
1865 — _ bicolor Selenka, Mal. BL, xii., p. 105, pl. 2, ff. 10-17. 
1868 — beticus Mabille, Rév. et Mag. Zool., p. 145. 
1I8sl — ecarinatus Boettger, Jahrb. Deutsch. Mal. Gesellsch., p. 186, f. 7A-c. 
1815 Limacella unguiculus Brard, Coq. Paris, p. 115, pl. 4, ff 3, 4, 11. 
1836 Parmacella variegata Philippi, Enum. Moll. Sicilize, 5 p. 125. 
IS5L Krynickillus maculatus WKalenicz., Bull. Soe. Imp. Moscou, p. 226, 6. 1¥.5 i92: 
1856 Krynickia maculata Fischer, Journ. de Conch., p. 66. 
1864 Limacus breckworthianus Lehmann, Mal. BL., xi., p. 145, pl. 4. 
1868 Eulimax (Plepticolimax) flavus Malm, Skand. Limac., p. 62, pl. 4, f. 11. 
\ISTORY.—Limar flavus (flavus, yellow), 
was first discriminated by Lister, but Linné’s 
name takes precedence, and although doubt 
has been cast by some writers on the correct 
identification of Linné’s species, yet the des- 
cription he gives, and his reference to the 
characteristic figure of Lister, would seem 
to remove all doubt on the subject. 
This species is ranged under the sub- 
generic name of Lehmanniu, to emphasize 
the presence of the coecal appendage to the 
rectum, the chief difference its organization 
presents to that of the typical Limaces. ‘This 
section is also known under the names of 
Limacus, Plepticolimax, and Simrothia. 
With this fine species we associate Signor 
Napoleone Pini, who has so carefully studied 
’ the slugs of Lombardy, and to whom we are 
= = indebted for the discrimination of the varie- 
ties tigrina and colubrina of this species. 
Aceording to Herr Heynemann, Limaa chrenbergi Bourg. and L. chilensis 
are both probably referable to our Limae flavus, and Mr. C.'T. Musson is of 
opinion that the Liémax megalodontes of Quoy & Gaimard, from Port Jack- 
son, also belongs to this species. ‘The Z. flavus var. lineolatus of Collinge, 
judging from the description, is more probably a variety of L. arborum. 
Diagnosis.—Limar flavus, in its typical form, may be easily distin- 
guished from the allied British species by its bluish tentacles, yellow 
mottled shield, and the oval yellowish rug interspersed over the body, 
which is of a dusky-yellow shade. 
INTERNALLY, it shows a marked difference from the Limaa maximus and 
L. cinereo-niger in the possession of a well-developed appendix or ccecum to 
the rectum, a peculiarity first pointed out and figured by Mr. Nunneley, of 
Leeds (‘Trans. Phil. Soc. Leeds, 1837, p. 58, pl. 2, f. 3). 
