CLASS V. INSECTA. 263 



Inhabits Europe : is rare in Britain, but has been taken near Darttbrd 

 in Kent, and at Windsor. 



4 Genus 401. TRICHIOSOMA. Leach, Zool. Misc. vol. iii. 

 Bodt/ hairy : abdomen with the first articulation (especially in the male) 



but slightly emarginated, the four posterior thighs dentated (in tlie 



male thick). 

 Sp. 1, Iri. si/hatlaim. Black, and slightly shining : abdomen of a dull 



yellow or brownish, the base and apex black : femora blueish-black: 



tibias and tarsi yellowish : wings with the apex brownish. 

 Inhabits woods near London, but is rare. 



4- Genus 402. CLAVELL.VRTA. Lumarck, Uach. 



iit)(fy hairy or but slightly hairy: abdomen with the first articulation 

 scarcely niarginated : femora of the four posterior legs witliout denta- 

 tions (of the male thickened). 



Sp. 1. Cla. marginala. Black; apex of the antennje, tibice, and tarsi 

 yellow: abdomen with the margins of the posterior segments white. 



Tenthredo marginata. Linn., Punz. Cimbex marginata cf authors. 



Inhabits woods in Europe: and has once occurred at Windsor. 



Genus 403. ZAR.EA. I^ach. 

 Eyes of the male joining at the posterior part. 



Sp. 1. Zar. fusci'ita. Black; tibias and tarsi yellow, the superior wings 

 with a brownish band (abdomen of the female with the base white). 

 Tenthredo fasciata. Linnt, Fanz. Cimbex fasciata of authors. 

 Lihabits woods : is rare in Britain. 



Genus 404. ABIA. Leach. 



Abdomen of the male with an elongated, silky spot on the posterior 

 part : eijcs of the male nearly joining. 



Sp. 1. Abia nigricornis. Antennae black: wings from the middle to the 

 apex with light brown spots : feet light red; thighs black and shin- 

 ing. 



Tenthredo nitens (female). Linn. Cimbex sericea, var. Tuhr. Abla 

 nigricornis. Leach. 



Inhabits woods. 



Sp. 2. Abia sericea. 



Tenthredo sericea. Linni. 



Inli'c-.bits woods and furze on heaths. 



Genus 405. AMASIS. Leach. 

 Body without spots : abdomen with the first articulation undivided. 

 Sp. 1. Am. Iceta. Back of the abdomen pale yellow, the first segmer.t 



wholly black : wings at the base blackish. 

 Tenthredo Igeta. Fabr., Panz. Cimbex laeta of authors. Amasis laeta. 



Leach. 

 Inhabits England and Germany, It has once occurred near Bristol. 



