46 Mr. H. W. Bates on the Longicorn Coleoptera 



Middle tibia with the tubercle and groove always largely de- 

 veloped. Tarsi simple. 

 Monohammitse, Thorns. 



Siibtribe 4. ONCiDERiTiE. Basal joint of the antennae thickened 

 from base to tip ; moderate in size (except in Hippopsitse). 

 Middle tibia with the tubercle and groove conspicuous. An- 

 terior acetabula angular externally. Tarsi with the claw-joint 

 almost always greatly elongated ; claws simple. Body elon- 

 gated. 



Oncideritae, Apomecynitse, pt. [Eudesmus, Trachysomus, 

 Trestonia), Hypsiomitse, Onocephalitse, Hippopsitse, Thorns. 



Subtribe 5. DESMiPHORiXiE. Basal joint of the antennae very 

 slender at the base, abruptly clavate. Middle tibia with the 

 tubercle and groove frequently wanting. Anterior acetabula 

 angulated externally. Tarsi simple. Antennae filiform, 

 rather short, pilose ; muzzle generally very short, and occiput 

 very large, prominent. 



Compsosomitae, Desmiphoritae, Apomecynitae, pt. {Hebe- 

 stola), Thorns. 



Subtribe 6, Saperdit^. Basal joint of the antennae slender, 

 generally thickened gradually from the base. Middle tibiae in 

 most of the genera wanting entirely the tubercle and groove. 

 Anterior acetabula widely gaping externally. Tarsi always 

 short; claws very frequently toothed or bifid. Body elon- 

 gated ; thorax very generally cylindric, simple. 

 Saperditse, Araphionychitae, Tapeinitae, Thorns. 



It is possible that this classification might be improved by 

 withdrawing the Hippopsitae from the Oncideritae, and the 

 Tapeinitae from the Saperditae, and instituting with them two 

 additional tribes. I think it would be difficult, however, to 

 form an arrangement which would meet all requirements. Each 

 of the subtribes (except the third) will contain several natural 

 groups, the definition of which I think it better to leave until 

 the whole of the Lamiarise have been passed under review. 

 The geographical distribution of the six subtribes is interesting, 

 in so far that the first (Acanthoderitae) is almost peculiar to the 

 New World, a few species of one genus only having yet been 

 recorded from the eastern hemisphere. On the other hand, the 

 third (Lamiitae), which exist in great number and variety of 

 genera and species in the Old World, is represented in South 

 America, at least in the Amazon region, by one genus only, viz. 

 Taniotes. 



