to the Genus Cimhex ; from which, however, it is very distinct in 

 the formation of the organs of mandueation, the labrnm being 

 very broad, the mandibles are tridentate, and tlie relative propor- 

 tions of the joints of the palpi are very different ; the most con- 

 stant character in the antennae is the great length of the third 

 joint, the tarsi have their joints angulated beneath towards the 

 centre, not spined near the apex as in Cimhex, from which the 

 males may be instantly known, by their wanting the membrana- 

 ceous covering near the base of the abdomen, aud the four 

 posterior thighs being furnished with a tooth. The dissections in 

 the plate are taken from a male, in which sex the instrumcnla 

 c'lhana far exceed those of the female in size, especiidly the lab- 

 rum and mandibles. 



TiicMosoma laterale is a rare insect, specimens being only 

 occasionally met with in the woods about London : IMr. 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 from the same neighbourhood : 

 the other British species are T. sylvaticum Leach. ; Lncornm 

 Linn. ; tibiale Steph. ; Scalesii Leach., and unidentatum Iicach. 



The larvae, like those of Cimhex, roll themselves up in a pecu- 

 liar manner, and when full grown inclose themselves iu a hard 

 case, which they attach to the plant they fed upon. One species 

 {T. Liicoruiu) is very abundant upon the White-thorn (PI. 31.) ; 

 and iu the winter, when the leaves have fallen off, the cocoons 

 are easily collected ; and in April following the lly will make its 

 appearance. 



Hyacinthus non-scriptiis Linn. ; 8cilla nutans Smith (Hare- 

 bell Squill) is figured with the insect. 



