376 TWO LETTERS WRITTEN BY MR. ADDISON. 



pear-trees ; they assumed the imago state at the latter end of 

 April. 



Not having a specimen of the larva at present, I am unable 

 to show the trophi at large. In habits and appearance, how- 

 ever, it is closely allied to those of Thanasimus and Ojrilus. 



Larva of Orchesia micans. Lat. Plate X. fig. 2. 



Head corneous ; body soft, cylindrical, slightly pubescent, 

 and of a pink colour. (Length, 1 1 lin.) 



Head rotundate ; antennae very minute ; labrum semicircular; man- 

 dibles short, slightly unidentate internally ; maxillse, with the 

 blade, soft and fleshy, the apex sparingly furnished with spinous 

 hairs ; maxillary palpi three-jointed, the joints equal in length, 

 terminal joint conic. Body elongate, cylindrical ; all the joints 

 are transverse, and nearly equal, excepting the telum, which is 

 rather small, and semicircular. 



Description of Figure. 



a The larva magnified, b The pupa, c The head of the larva at large.. 

 d Mandible, e Maxilla. / Leg. 



The larva is found, during the autumn, in boletus of the 

 ash tree, and is generally in a bent position, and very sluggish, 

 like those of the Curculionidce. The pupa begins to partake 

 of the activity of the perfect insect, riggling about very much 

 when touched ; its head is curiously dilated at the sides, and 

 depressed. 



Art. XXXVI. — Two Letters, written by Mr. Addison, in 

 the Year 1708, to the Earl of Warwick, (afterwards his 

 Son-in-Law,) when that Nobleman was very young. 

 Communicated by Arthur Davis, Esq. 



[to the editor of the entomological magazine.] 



Sir, — Some years since a friend of mine permitted me to 

 transcribe two original letters from the celebrated Addison to 

 his after-acquired son-in-law, the Earl of Warwick. I was, 

 and am still, much delighted with the elegant simplicity which 



