LUCANUS AND HISTER. 



39 



consequently, in using his words 9 , I can be in no clanger 

 of being charged with an attempt to force Nature, as it 

 were, to submit to what may hereafter be termed a theory 

 , of entomology. 



1. Histeris "Antennae thoracebre- 1. Lucanidarum "Antenna thorace 



viores, ad basin mandibularum 

 insertas ; fractae. Articulo basi- 

 lari maximo, conico, ad extima 

 crassiori, incurvo; octavo clavae 

 3-articulatae basin efficiente." 



2. Histeris " Labrum exsertum, 

 crustaceum, transverso qua- 

 dratum." 



3. Histeris " Mandibular corneas, 

 validae, crassa?, processu inter- 

 no bidentato." 



4. Histeris " Palpi filiformes, arti- 

 culo vdtimo longiore, subcylin- 

 drico, obtuso; maxillares paulo 

 longiores." 



5. Histeris " Maxillae laciinis dua- 



bus inaequalibus, marginibus 

 internis fimbriato-hirsutissi- 

 mis; externa majore, subovato- 

 trigona, lacinia interna ungue 

 minuto, corneo, bifido, aut du- 

 plici genere constructo." 



6. Histeris " Mentum quadratum 

 marginis superi medio emar- 

 ginato." 



non longiores, fractal ; Capitulo 

 e quinque, quatuor aut tribus 

 lamellis composite" 

 Lucani " Antennae articulo pri- 

 mo longissimo, incurvo, ad 

 apicem saspius crassiore." 



2. Passali " Labrum crustaceum, 



transverso-quadratum, penitus 

 exsertum." 



3. Lucanidarum " Mandibulae cor- 



neae, validissimae, porrectae, 

 dentatae." 



4. Lucanidarum " Palpi filiformes, 



articulo ultimo subovali aut 

 subcylindrico ; maxillares lon- 

 giores." 



5. Passali " Maxillae processibus 

 corneis, spinosis, interne den- 

 tatis ; apicali validiore, subtri- 

 gono, interno dentibus duobus 

 aut unico." 



6. Passali " Labium quadratum, 

 men to profunde emarginato." 



a Gen. Crust, et Ins. vol. ii. p. 46, 130, 131, 136. 



