266 MODKRN SYSTEM. 



Sp. 1. Cras. septentrional is. 



Nematus Septentrionalis. Jui-ine, La/r., Lcuch. Ci\tsus Septcntrio- 



nalis. Leach, Zool. Misc. vol. iii. p. 129. 

 Inhabits woods. 



-f- Genus 418. INEMATUS. Leach. 



Superior wings with four submarginal cells: antenna simple, nine- 

 jointed ; longer than the body in the males, the last articulation ge- 

 nerally increasing, or internally a little produced : tarsi simple. 



Sp. 1. Nem. niger. 2. Ncm. lutcus. 3. Nem. lucidus, 4"C. 

 Genus 419. CLADIUS. Leach. 



Upper zcings with three submarginal cells : antenne of the same length 

 as the body or scarcely longer; of the males with very long cilia; 

 the 3d, 4th, and .5th joints from the apex, or the (Jth and 7th (espe- 

 cially) a little produced ; the third joint from the base with a small 

 protuberance: tarsi simple. 



Sp. 1. eta. diffhrmis. 



Inhabits England, but is rare ; it has occurred at Coombe Wood in 

 Surry, and near Bristol. 



Stikps 6. — Antenna; with many articulations: hodt/ rather depressed: 

 wings with two marginal and four submarginal cells. 



Genus 420. TARPA. Fahr., King, Leach. Megalodontes. i«/r., 

 Spinoln. Diprion. Schi'unk. 

 Tibia, the four posterior armed on the inside with two spurs or spines. 



Obs. — Abdomen with the posterior part of the first articulation with a 

 membranaceous margin; the membrane pale. 



Sp. 1. Tar. Fuliricii. Black; head with two spots on the inner margin 

 between the eyes : thorax with the anterior part angular ; two stripes 

 near the scutellum, and pimctured ; the membrane of the abdomen 

 with two fascia-, and a puncture on each side : anus with a white 

 band: antennae l)rown; the first two joints black : feet yellow; base 

 of the coxffi of the four anterior feet black. 



Tarpa Fabricii. Leach. 



Length of the body 7 lines ; expansion of the wings 12-1 lines. In the 

 museum of Dr. Leach. 



Sp. 2. Tar. Klngii. Black, with three spots between the eyes; those 

 placed on the margin of the eyes broken : thorax with the anterior 

 margin divided; two stripes near the scutellum, and punctured: ab-, 

 domen with the 1st, 4th, 5th, 6th, 7th, and 8th joints at tlie poste- 

 rior margins, with two yellow bands : antenna^, with the second and 

 last joint black, the others brown ; feet reddish brown; tibia' yellow; 

 thighs of the four anterior legs black at their base. 



Tenthredo cephalotcs. Fair. Ent.Si/sf. 2. 111. Tarpa cephalotes. Fair. 

 Sj/st. Piezat. 19. Tarpa plagiocephala. Kli/g, Berl. Mag. 1808, 270. 

 L 8. Tarpa Klngii. Leach, .Zool. Misc. iii. 131. < 



