730 



ENTOMOLOGY. 



Hylotoma flini. Fabr. 

 -Lo/i/iyrus fiini. Latr. 

 Inhabits Europe. 



Family II. Xijihydrida. 



Larvae with scaly feet, or at least 

 Latr. Spinoli. 



Labrum obscure, 

 not membranaceous. 



Genus DXVIII. Megaladontes, 



Tarpa. Fabr. Panzer. 



Cephai.eia. Jurine. 



Diprion, Schrank. 



Mandibles long, slender, and strongly bent. Neck 

 not elongate. Oviduct not exserted. Antennae pectina- 

 ted or serrated. 



Sfi. 1. Cefihalotes. 



Megalodontes cefihalotes. Spinoli, Latr. 



Tarfia cefihalotes. Fabr. 



Inhabits Europe. 



Genus DXIX. Pamphilius. Latr. Olivier. 



Tenthk.edo. Linn. Lamarck, Panzer. 



Lyda. Fabr. Spinoli. 



Cephaleia. Jurine. 



Psen. Schrank. 



Mandibles long, slender, and strongly bent. Neck 

 not elongate. Oviduct not exserted. Antennae simple 

 in both sexes. 



Sfi. 1. JLrythrocefihalus. 



Pamfihilus erythrocefihalus. Latr. 



Lyda erythrocefihala. Fabr. 



Inhabits Germany and England. 



Genus DXX. Cephus. Latr. Fabr. Panz. 



Sirex. Linn. 



Astatus. Klug. 



Trachelus. Jurine. 



Mandibles exserted, longer than wide. Neck long. 

 Oviduct exserted. Antennae inserted in the front be- 

 tween the eyes, gradually thicker externally. 



Sfi. I. 7\oglodyta. 



Cefihus troglodyta. Panzer, Latr. 



Inhabits Europe. 



Sfi. 2. Pygmxus. 



Cefihus fiygmaus, Latr. Fabr. 



Sirex fiy gm a us. Linn. 



Inhabits Europe. 



Genus DXXI. Xiphydria. 

 noli. 



Sirex. Linn. 



Uhocerus.. Jurine. 



Hybonotus. Klug. 



Mandibles exserted, longer than wide. Neck long. 

 Oviduct exserted. Antennae setaceous, inserted above 

 the clypeus. 



Sfi. I. Camelus. 



Sirex camelus. Linn. 



Hybonotus camelus. Klug. 



Xifihydria camelus. Latr. Fabr. 



Inhabits Europe. 



Sfi. 2. Dromedarius. 



Hybonotus dromedarius. Klug. 



Xifihydria dromedarius. Latr. Fabr. 



Inhabits Europe. 



Tribe II. Urocerides.* 

 Abdomen sessile. Oviduct filiform, exserted, or in- 



Latr. Fabr. Panz. Spi- 



closed in a groove beneath the abdomen 

 short. 



Mandibles 



Genus DXXII. Oryssus." Latr. Fabr. Jurine, Lam. 

 King. Panz. 



Spiiex. Scopoli. 



Mandibles with their internal edge not dentated. Max- 

 illary palpi long and pendulous. Antennae filiform, com- 

 pressed, inserted under the anterior margin of the cly- 

 peus. Superior wings with one marginal cell, and two 

 submarginal, the last incomplete. Oviduct capillary, 

 hidden in a longitudinal groove. 



Sfi. 1. Coronatus. 



Oryssus coronatus. Fabr. Latr. Coquebert. 



Oryssus vesfiertilio. Klug, Panzer. 



Sfihcx abietina. Scopoli. 



Inhabits Europe. 



Genus DXXIII. Urocerus. Geoff. Schxff. Oliv 

 Lam. Latr. Leach. 



Sirex. Linn. Fabr. Jurine, Panz. Klug, Leach. 



Ichneumon. De Gecr, Scopoli. 



Mandibles dentated on their internal edge. Maxillary 

 palpi very small. Labial palpi terminated by a very 

 thick, hairy joint. Antennae gradually narrowing exter- 

 nally, inserted in the front; longer than the thorax. 

 Superior wings with two marginal and two submarginal 

 cells complete. Abdomen terminating in a point. Ovi- 

 duct exserted, composed of three parts, the outer ones 

 valviform. 



Obs. This genus contains two great divisions, which, 

 from their characters, are evidently natural genera. 



* Antennae with 25 joints. Abdomen of the female 

 terminated with an abrupt elongate horn. Labial 

 palpi with a distinct basal joint. Maxillary palpi 

 with two distinct joints of equal length. 



Genus Urocerus. Leach. 



Sfi. 1 . Gigas. 



Sirex- mariscus. Fabr. (Male). 



Sirex gigas. Linn. Fabr. Latr. (Female). 



Urocerus gigas. Latr. 



Inhabits Europe. Is rare in Britain. 



Sfi. 2. Psyllius. 



Sirex fisyllius. Fabr. Klug. 



Urocerus gigas. (Variety). Latr. 



Inhabits Europe. Was taken near Edinburgh by Mr 

 John Wilson, of the College, Edinburgh. 



** Antennae with 21 or 23 joints. Maxillary palpi 

 with their basal joint very short, scarcely to be 

 found. 



A. Abdomen of the female terminated by an abrupt, 

 elongate horn. Labial palpi distinctly triaticulated. 



Genus Sirex. Leach. 



Sfi. 3. Sfiectrum. 



Sirex emarginatus. Fabr. (Male). 



Sirex sfiectrum. Linn. Panzer, Klug. (Female). 



Urocerus sfiectrum. Latr. 



13. Abdomen of the female with the extremity gradu- 

 ally acuminated. 



Sfi. 4. Juvencus. 



Sirex juvencus. Linn. Fabr. Klug, (Female). 



Sirex noctilio. Fabr. Panzer, (Male). 



Urocerus juvencus. Latr. 



Sirex juvencus. Leach. 



Inhabits Europe. Is rare in Britain. 



Genus DXXIV. Tremex. Latr. 



Sirex. Jurine, Fabr. Klug. 



Mandibles denticulated on their internal edge. Max- 

 illary palpi very small. Labial palpi terminated by a 

 joint, very thick and very hairy. Antennae setaceous, 

 inserted in the front. Superior wings with two mar- 



>" ™! Uibe Dr UaCh hSS proposed t0 divide int0 u '° famiUes » th e one to contain the ffenus Orynsus, the other Sirex, Uroceru,, and 



