SYNOPSIS OF THE LAMIIN.E. 113 



Tribe VII. Acanthoderini. 



Tliis tribe, which contains a c()n^^ille^al)le nuiiil)ur of species, has 

 been reviewed by Dr. Horn in the Transactions viii, {)p. 115-133. 

 The synop.sis whicli folkiw are founded upon his, but in some in- 

 stances the accunudation of specimens indicates that the number of 

 species may be reduced. 



The arrangement of the genera is as follows : 



Scape of antennai clavate Suhtribe Acanthoderini. 



Scape of antennre nearly cylindrical Suhtribe Acanchocinini. 



Siibtribe Acanthoderini. 

 All the species are referred to Acanthoderes. 



Suhtribe Acanthocinini. 



Lateral tubercle of thorax at the niiddle, tarsi broad (Lagochierini). 



Lateral spine of thorax very prominent, the disc tuberculate, antenna' much 



longer than the body : I^aj^oclieiriiiii. 



Lateral spine obtuse, disc not tuberculate, antennje not longer than the Ixidy 



in either sex Cieiiopceus. 



Lateral tubercle of thorax behind the middle ; tarsi slender, except in Mecotetnitn^. 



Females without elongated ovipositor (Liopi). 



Thorax feebly tuberculate or angulate at the sides a little behind the middle, 

 mesostcrnum broad, first joint of hind tarsi not longer, if as long, as 



the next two Le|>to!>tt,ylii!«. 



Thorax distinctly angulate, usually acutely tuberculate, or with a short spine 

 behind the middle; mesosteruum triangular or narrow. 

 AntenniB without traces of ciliic beneath, first joint of hind tarsi as long 

 as the next two. 

 Prosteruum narrow, but not linear: body without erect hairs- Liopus. 

 Prosteruum linear, form cylindrical, elytra with erect hairs- - DectOS. 

 Auteunie distinctly ciliate beneath. 



Hind tarsi short, fii*st joint not as long as 2-3; antennse of % very long, 

 the fourth joint longer than the whole body- . . -9Iecutelartiis. 

 Hind tarsi slender, first joint iis long as the next three ; antennse normal ; 

 pro- and mososternum very narrow. 



Elytra without lateral carina LiCpliir|;('s. 



Elytra with distinct lateral carina Hyperplatys. 



Females with elongated ovipositor (Acanthocini), 



Body above with erect hairs besides the pubescence. 



Mesosternum broad; antenuiu not much longer than the body and not 



ciliate beneath, except feebly on the scape Orapliii^iiriis. 



Mesosternum narrow ; antennai twice as long as the body and very .slender, 



ciliate beneath Ceratograplii^^. 



Body above without erect hairs. 



Mesosternum moderate; antennse very long, joints 3-4, at least, densely 



fringed beneath with short hairs Acaiitlioeiiiiis. 



Mesosternum broad ; antennse moderate, not fringed beneath, lateral tuber- 

 cle of thorax close to the base, ovipositor of the female shiu-ter than 

 uMiil 9fysMO«Iry.<4. 



TRANS. AM. KNT. SOC. XXIII. (15) APRIL, 1S9U. 



