46 Mr. A. G. More on the Animal o/'Limnaea involuta. 



N. testaceuSy Rambur. 



Neuronitis testaceus, Eamb. Ndvrop. p. 442, pi. 10. fig. 1 (1842). Hermes 

 testacem, Walk. Cat. Brit. Miis. Neurop. p. 206. 



Java, India (?). 



N. mtimus, M'Lachlan, ante, p. 44. 

 India. 



N. albipennis, Walker. 



Hermes albipennis, Walk. Cat. Brit. Mus. Neurop. p. 200 (185.3). 

 Nepaul. 



N. montanus, M'Lachlan, ante, p. 42. 

 Himalaya. 



N. latratus, M'Lachlan, ante, p. 43. 

 India. 



N. fenestralis, M'Lachlan, ante, p. 42. 

 Darjeeling. 



N.B. It is possible that some of the South-American species 

 placed under Corydalis in the Appendix to Hagen's ' Synopsis 

 of North American Neuroptera,' and mentioned by name only, 

 may belong to Neuromus. 



I do not feel in a position to give a catalogue of the species 

 of Corydalis (which genus is peculiarly American), especially 

 as so many undescribed species are noticed by Hagen. 



V. — Note on the Animal of Limnaea involuta [Harvey). 

 By A. G. MoEE, F.L.S. 



[Plate ni. fig. 3.] 



The shell of Limnoea involuta is now to be seen in many col- 

 lections ; but very little appears to be known concerning the 

 external form of the animal itself, which, in the most recent 

 works on British conchology, still remains undescribed, though 

 the species is by general consent placed under AmpMpeplea, 

 whether as a section or subgenus. 



Having last week visited the small lake called Lough 

 Crincaum, on Cromaglaun Mountain, 798 feet above the sea, 

 I collected there a number of specimens, which have been 

 living for several days in a glass bowl under constant obser- 

 vation. I am thus enabled to say, with regard to the dis- 

 puted question of the investing mantle, that there is no ap- 



