1900] 127 



DESCRIPTION OF THE LARVA OF METZNERIA LITTORELLA, Dgl. 

 BY THE RIGHT HON. LORD WALSINGHAM, M.A., LL.D., F.R.S. 



Long., 6 mm. Ivory-white, with a slight yellowish tinge ; head blackish ; 

 prothorax with two brown chitinous plates, separated in the middle, the separation 

 wider on the middle of the segment than before or behind the middle ; anal plate 

 very small, brown ; no lateral chitinous plates or spots on the thoracic or abdominal 

 somites ; the chitinous portion of the thoracic legs is obsolete, their origin repre- 

 sented only by very minute tubercular excresenoes in the middle of a somewhat 

 tumid base, capable of movement to assist locomotion ; the abdominal legs are also 

 obsolete. 



The larva feeds on the seeds of Plantago coronopus, where it may 

 be found in the months of September and October, forming a slight 

 gallery between the seeds and stem, and always making an opening 

 communicating with the interior of the stem on which the seeds are 

 fixed, into this it retires with the head upward. It is presumable that 

 it pupates within the stem, but I have not found it below the level of 

 the seed-heads. Excl. 6, V, 1900. 



The larva is obviously similar to that of Metzneria, to which 

 genus I should refer littorella rather than to Ftocheuusa. 



The imago occurs somewhat plentifully from May 6th to 29th 

 (and perhaps later) on the cliffs near Ventnor, where it was originally 

 found by the late Mr. S. Stevens half a century ago, and frequently 

 sought for by himself and others without success in succeeding years. 

 Owing to its retiring habits it may easily be overlooked unless dis- 

 lodged by smoke, or other means, from the Plantago. 



The capture of topotypes proves the correctness of the synonymy 

 littorella, Dgl., = quinquepiinctella, H.-S , for I have myself met with 

 it in the South of France at Cannes, 28, IV, 1890, and in Corsica at 

 Ajaccio, Corte and Vivario, 3 — 27, V, 1896. 



The possession of these foreign specimens, of which I had a 

 perfect recollection, enabled me at once to recognise the first worn 

 specimen which I captured in the Isle of "Wight on May 13th, 1898. 



Merton Hall, Thetford : 

 Mai/, 1900. 



A REMARKABLE NEW MIMETIC SPECIES OF 3IANTISPA FROM 



BORNEO. 

 BY ROBERT McLACHLAN, F.R.S., &c. 



Mahtispa simulateix, n. sp. 

 Body reddish-fulvous; antennae (at extreme base excepted), posterior tibia^ 

 (excepting at base), and eyes, black ; an obscure triangular mark on the second ab- 

 dominal segment above ; abdomen greyish-white beneath. Antcnnaj stout, longer 



