459 

 2. Melampus imcleohis v. Martens? 



V. Martens. Monatsber. d. Akad. d. VVissensch. Berlin, 1865, p. 55. 

 Süss- u. Brackvv. Moll. des Ind. Archipels, p. 164, PI. 8, fig. 21. 



Stat. 306. Flores, near mount Lobetobi. i Spec. 



I am not certain about the Identification ; the specimen is a strongly worn shell, which 

 agrees in many respects with the description of v. Martens, bat has 15 instead of 10 folds 

 or denticles in the interior of its peristome, v. Martens (1. c. p. 165) records a specimen from 

 the Pelew-isles with only 7 folds, so this character proves to be variable. 



Suborder Hygrophila. 



Fam. LiMNAEIDAE. 



Limnaea Lamarck. 



I . Liiimaca javanica Mousson. 



MOUSSON. Land- u. Süsswasser-Moll. v. Java, p. 42, PI. 5, fig. i. {succincus v. javanica). 



Reeve. Conch. Ie. Vol. XVIII, Limnaea, fig. 50. 



V. Martens. Süss- u. Brackw. Moll. des Ind. Archipels, p. 3, PI. i, fig. 3—7. 



Stat. 4. Djangkar (Java). 2 Spec. 



The specimens are young, so I am unable to make out, to which of the forms, distinguished 

 by V. Martens, it ought to be ascribed. 



Isidora Ehrenberg. 



I. Isidora sta^nalis v. Martens. 



V. Martens. Süss- u. Brackw. Moll. des Ind. Archipels, p. 11, PI. i, fig. 32 — 34. 

 River near Tondano, Celebes. 2 Spec. 



This species was originally only known from Sumatra ; the largest specimen perfectly 

 agrees in shape with the figure of v. Martens, but is larger, 1 2 instead of 8Y„ Mill. ; the 

 smallest one, which nearly agrees in size, has the spire sHghtly more elongated. As Isidora 

 sitiiiatrana v. Marts. has been found by P. & F. Sarasin in Celebes (Die Süssw.-Moll. von 

 Celebes, p. 78), the fact that the present species should have been found in Celebes, is not 

 surprising; these authors (1. c. p. 78) have observed some variability in /. niinahassae v. Marts. 



