206 Mr. J. S. Baly on tlte Phytophaga. 



the thorax. Head rugose, vertex with two acute tubercles placed 

 transversely above the eyes ; antennae about three-fourths the length 

 of the body (including the dilated abdomen) ; thorax strongly rugose, 

 deeply and irregularly excavated, and here and there impressed with 

 deep punctures, dilated portions of the sides slightly sinuate at their 

 base, basal margin notched in the middle, causing it to appear bilobed ; 

 elytra concave, rugose-pimctate, their outer border sinuate ; abdomen 

 smooth, its sides non-tuberculate. 



Genus Metacycla. 



Co7-pus oblongum. Caput exsertum, facie trigona; antennis gracilibus, 

 filiformibus, maris corporis longitudini fBqualibus, articulo primo pauUo 

 incrassato, secimdo bre\'i, tertio primi longitudini \\-k. fequali, quarto 

 longiore, reliquisque longioribus inter se sequalibus aut perparum leniter 

 decrescentibus ; ^yaJpis niaxillaribus articulo idtimo couico ; mento trans- 

 "\'erso. Tliorax transversus, lateribus fere rectis. ScideUum trigonum. 

 Elytra thorace latiora, oblonga aut ovata. Pedes subgraciles, sub- 

 elongati ; coxis anticis contiguis, ttnguieuUs appendiculatis. Abdomen 

 fcemince inflatum, ultra elytrorum marginem valde distentum. Meta- 

 stermim breve. 



Type, Metacycla Sallei, Baly. 



Closely allied to the preceding genus, biit separated by the slender 

 antennse, the greater development of the metasternum in the female 

 (this part, although short, being considerably longer than in Meta- 

 leiita), and the appendiculated claws. 



Metacycla Sallei. 



M. (mas) subelougata, modice convexa, nigro-coerulea, nitida; elytris 

 crebre pimctatis, obscure creruleis ; thorace nitido. 



M. (foem.) abdomine idtra elytra valde superante, ovato-rotundato, lu- 

 rido-marginato. — Long, mas 2|, fam. 4 lin. 



Hah. Mexico. 



Antennae equal in length to the body in the male; thorax trans- 

 versely convex, sides slightly rounded, narrowed from the middle to 

 the base, anterior angles produced into an obtuse tooth, surface finely 

 but not closely punctured ; scutelltun smooth, trigonate ; elj'tra much 

 broader than the thorax, oblong, obtuselj^ rounded at the apex, the 

 sutural angle rounded, convex, flattened and slightly depressed on the 

 sutiu'e in front, surface less closely and coarsely punctured than in 

 the following species ; elytra in the female broader and shorter, each 

 elytron being narrov/ly ovate, witli the sutiu-al margin rather straighter 

 than the other ; on the disk of each are four or five indistinct vittaj j 

 abdomen very convex, impressed on either side within the lateral 

 border with a row of large deep foveae, the margin itself obscure rufo- 

 fulvout;. 



