— 195— 



Mesosternum oblique or nearly flat, presternum declivous at tip, not |ierpcn(liculin . 

 pronotum not excnv.ited, but only rounded and constricted at base. 



Antennae compri'ssed, subserraie, Plagionotus. 



Anteniue filifunn. 



Mesosternum declivous, . Calloides. 



Mesosternum nearly flat, epislerna narrower, Arhopalus. 



These genera contain but few species easily known by the markings. 



Clyti. 

 Kpisterna of methathorax wider; 



Head not carinatcd; pront)tuu3 without transverse ridges. Clytus. 



Head carinated; Xylotrechus. 



Head not carinattd; pronotum with transverse ridges; 



Antennae 1 1 -jointed Needy tus. 



Antennae i2-jointed Euryscelis. 



Episterna of metathorax narrower, Clytanthus. 



The thighs are spinose only in Eurysiehs and part o{ A'eoc/ylus. The 

 thorax o'i Xylolrechus is usually without ridges, in one species however 

 the ridges are indicated and sometimes quite well developed. The two 

 species of C7>'/(2«//^tts are easily known by the markings. They havr 

 neither the thoracic ridge nor the frontal carina. 



Anaglypti. 

 I'.lytra without ivory bands; 

 Eyes oblique, emarginate; 

 and joint of antennae Q as long as the 4th: antennae not spinose, Microclytus- 

 2d joint of antennse 9 cT short as usual. 



3d joint of antenna; spinose, Cyrtophcrus. 



Eyes rounded, entire, Tillomorpha, 



Elytra with ivory bands Euderces. 



The form of the eye is figured for each of these genera. Tillomor- 

 pha has it smaller as if the upper emarginate part had been cut awa\-, 

 and it is nearly round and without any break in its contour. 



The discovery that Mirodytus (^ lacked the peculiar form of an- 

 tennae described in the "Classification" p. 305 (the 2d joint in that se.\ 

 being as short as usual) required the slight change in the characters used 

 in separating the above genera. 



CYLLENE, Ntxtm. 

 We copy the synopsis by Dr. Horn in Trans. Am, Knt. Soc. VI 11. 

 p. 134- 



Antiennoe with joints 3-5 spinous at tip; 

 Thorax and abdomen uniformly pubescent ;prosternum wide between the coxae l)ul 



not prolonged; tip of elytra acutely spinous, antennatus. 



Antennae not spinous; thorax black with yellow bands, abdomen more densely pu- 

 Viescent at sides, feebly at middle; 



