230 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



found under the bark of a decayed tree. At its sides it has two 

 peculiar, thin lobes, which, when the slug creeps undisturbed, are 

 spread over each side of the shell, and cover a large part of it ; if 

 disturbed it partly retracts these lobes. If excited the slug is 

 uncommonly active, writhing to the right and left, and violently 

 moving the body like an earth-worm. I have never seen a slug which, 

 is so active in its movements. It cannot withdraw completely in the 

 shell." As far as I know* this is the first species of the genus 

 described from Java, though 8trubell and Fruhstorfer may have 

 found such. 



2. Xesta Dwipana, Gude. 



Gude, Proc. Mai. Soc, vol. v, p. 264, pi. vii, figs. 15-17, 1903; 

 V. Martens, Ostas. Landschn., p. 254 [Jenynsi). 



Hah. — Gunung Ungaran, September, 1910. Two specimens. 



The specimens belong to the colour-variety, which has been named 

 by Boettger V. concolor, without description, received from Fruhstorfer. 

 from the Gunung Gedeh, as Macrochlamys Jenyn&i v. concolor ; it 

 is characterized by its rather uniform yellowish - brown colour, 

 without band. On comparison with Gude's descriptive table, I find 

 Mr. Jacobson's specimens agree in every respect with the characters, 

 and are quite ditferent from Martensia Jenynsi, Pfr., of which species 

 I could compare two East African specimens. In Journ. of Mai., 

 vol. X, p. 53, 1903, Gude has recorded the species in his classified 

 list of helicoid land shells of Asia as Macrochlamys Dwipcensis. 



3. Hemiplegia patens, v. Martens. 



V. Martens, Archiv f. JSTaturgesch., 1891, p. 27, pi. iii, fig. 1, 

 Hah. — Nongkodjadjar, January, 1911. One specimen. 

 The only specimen is young, as may be judged by its ver}' thin, 

 partly broken peristome ; it agrees as well as can be desired with 

 the description and figure of v. Martens, but it is not quite 40 mm. 

 in its largest diameter, has about half a whorl less, and the aperture 

 is still more rounded ; these differences, liowever, would disappear 

 if the shell were full grown. It is nearly from the same locality 

 as the type of v. Martens. It agrees with specimens received from 

 Fruhstorfer as II. gemina, v. d. B., but not with the description and 

 figure of Pliilippi (Abbild. neuer Conch., vol. i, p. 9, pi. i, fig. 1), 

 the umbilicus being nearly closed, the last whorl much broader, 

 sculpture different, etc. Professor Thiele, who had tlie kindness to 

 compare my specimens with the only type of v. Martens, affirms my 

 suggestion that it is //. patens. 



4. Hemiplecta Humphretsiana, Lea, var. 



Lea, Trans. Phil. Soc. Philadelphia, vii, p. 463, pi. xii, fig. 16, 1841 ; 

 V. Martens, Ostas. Landschn., p. 233, pi. x, figs. 3, 4, 6. 



Hah. — Nusa Kambangan, March, 1911. One specimen. 



The specimen is young; it does not exactly agree with any of the 

 figures I could compare, nearest perhaps in shape with var. complanata, 



