and it was my intention to place it in the 2ncl edition of my 

 Guide next before Molanna, but by some accident it was in- 

 serted between Potomaria and Sericostoma, which in all pro- 

 bability belong to one genus. Although I still doubt if it be 

 better located than it was at first, when it was illustrated in 

 this work (fol. 561), 1 am anxious to correct the palpable error 

 committed in the Guide, before I proceed to discuss the affi- 

 nities of Molanna. 



This type appears to have been unknown to M. Pictet at 

 the time iiis Memoir was printed ; we therefore know nothing 

 of its early oeconomy ; but from its being found in the neigh- 

 bourhood of deep water, it is no doubt similar to its allies. 



It appears to me that its natural situation is between Lepto- 

 cerus and Odonlocerus. The trophi are considerably like 

 those of the former genus, as well as the wings, and the long 

 stout antennae and the whole contour assimilate with those of 

 the latter group. 



The way in which Molanna rests is peculiar, and bears a 

 striking resemblance at a little distance to the ochreous 

 Crambi : the antennae, palpi, and breast are pressed close to 

 the surface on which it stands, the wings are elevated and 

 somewhat cylindric, enveloping the abdomen, which is of 

 course concealed, and the legs are spread out: when thus 

 settled they are rather loath to move, especially the females. 



M. angustata I find on paling near the water in the Regent's 

 Park : the males first come out the end of May ; the females 

 I do not find until the middle of June; and a few males ap- 

 pear again the beginning of August. I have never taken it 

 elsewhere, excepting a single male in a boat whilst I was fish- 

 ing last August at Henley. With them I find occasionally a 

 specimen with the palpi, head, and abdomen fuscous, which is 

 the M. nigripalpis of Stephens. 



The plant is Acorns Calamus, Sweet Flag, specimens of 

 which were transmitted to me by Laurence Sulivan, Esq., 

 and others from Wimbledon by J. E. Gray, Esq. 



