PHYTOPHAGOUS COLEOPTERA FROM MENTAWEI 147 



Mas. Antennae with the seventh joint strongly widened, the 

 eighth curved. 



Length 3 1 / 2 lines. 



Head smooth and shining, impunctate , the frontal elevations 

 strongly raised and broad, antennae extending beyond the 

 middle of the elytra, black, the last three joints yellowish-white, 

 the second joint extremely small, the third and fourth equal, 

 the seventh strongly widened and flattened in the male, much 

 longer than the preceding joint , the eighth shorter , its upper 

 edge conca ve-emarginate, thorax proportionately long, its sides 

 straight, the surface with a central and two lateral oblique 

 depressions, very minutely punctured when seen under a strong 

 lens, scutellum black, broad, elytra narrowly elongate, closely 

 punctured in double rows, the punctures somewhat transverse 

 in shape and divided by nine or ten narrow longitudinal costae, 

 legs long and slender. 



Hab. Sipora (Sereinu, May, June). 



From all other species of this genus, the present one differs 

 by the proportionately narrower and longer thorax which, al- 

 though, when measured is scarcely longer than broad, yet looks 

 like it on account of its deflexed sides which make it appear 

 narrower and longer, the depressions on its surface are also 

 different than in the other species, and the structure of the 

 antennae in the male together with the apical three w r hite joints 

 will further assist in its recognition ; in all the other species of 

 the genus the thorax appears to be not longer than broad , in 

 the present one there is a great apparent difference in this 

 respect. 



The following species of Colaspoides must be added to those 

 obtained by Dr. Modigliani at Sumatra (Annali Museo Civico, 

 Vol. XXXVI, 1896). 



31. Colaspoides inconspicua, sp. n. — Pale fulvous, the head 

 and thorax sparingly punctured, elytra convex, very closely 

 punctured in irregular rows, the interstices here and there 

 wrinkled, the anterior femora with a minute tooth. 



