allied to the Genus Cimbex ; from which, however, it is very 

 distinct in the formation of the organs of manducation, the 

 labrum being very broad, the mandibles are tridentate, and 

 the relative proportions of the joints of the palpi are very dif- 

 ferent; the most constant character in the antennae is the 

 great length of the third joint, the tarsi have their joints angu- 

 lated beneath towards the centre, not spined near the apex as 

 in Cimbex, from which the males may be instantly known, by 

 their wanting the membranaceous covering near the base of 

 the abdomen, and the four posterior thighs being furnished 

 with a tooth. The dissections in the plate are all taken from 

 a male, in which sex the instrument a cibaria far exceed those 

 of the female in size, especially the labrum and mandibles. 



Trichiosoma laterale is a rare insect, specimens being only 

 occasionally met with in the woods about London : Mr. 

 Samouelle first captured a specimen at Coombe, in the month 

 of April; the one figured (which is a male) came from Darent ; 

 and I believe Mr. Stephens has also specimens fi-om the same 

 neighbourhood : the other British species are, T. sylvaticum 

 Leach. ; Luconim Linn. ; tibiale Steph. ; Scalesii Leach., and 

 unidentatum Leach. 



The larvae, like those of Cimber, roll themselves up in a 

 peculiar manner, and when full grown inclose themselves in 

 a hard case, which they attach to the plant they fed upon. 

 One species ( T. Liworum) is very abundant upon the White- 

 thorn (PI. 31.) ; and in the winter, when the leaves have fallen 

 off, the cocoons are easily collected ; and in April following 

 the fly will make its appearance. 



HyacintJms non-scriptns Linn.; Scilla nutans Smith (Hare- 

 bell Squill) is figured with the insect. 



