XXxii, '21] ENTOMOLOGICAL NEWS 197 



Ciypeus coarsely punctate, subrectungular, about three times as wide 

 as long. 



Labrum transversally orbiculate, coarsely punctate, bearing a few- 

 setae on dorsal surface, anterior edge fringed with setae, lateral edges 

 each bearing a row of minute setae. 



Antennae shorter than length of head, four-jointed, second joint 

 slightly longer than the first; first, third and apical joints subequal in 

 length, each joint except apical one more or less enlarged distally, apical 

 joint bluntly pointed. 



Ocelli lateral, one at base of each antennal ring. 



Maxillary lobes (lacinia and galea) fused into a single, fleshy, setose 

 structure ; exterior lobe (galea) with a single, terminal curved, prom- 

 inent tooth (uncus), around which are several strong setae; interior 

 lobe (lacinia) with three strong, conical teeth and numerous stiff setae. 

 Stridulatory teeth of maxilla ten. 



Maxillary palp not reaching apex of exterior mala, four-jointed, basal 

 joint short, second joint twice as long as basal one, second and subapical 

 joints equal in length, subapical joint bearing two setae, apical joint 

 slightly longer than subapical. 



Lingua fleshy, cushioned, densely set with spines. 



Mandible : Scissorial portion same length as manducatorial portion 

 and almost as wide ; above and below with deep, unequal rugosities and 

 shallow depressions; dorsal surface convex with three large depres- 

 sions ; two setae ; ventral surface vaulted ; cutting edge thin, terminally 

 very acute; right mandible with two teeth, left mandible with three. 

 Lateral exterior mandibular portion heavily rugose, limited by two 

 longitudinal margins, which posteriorly, between scissorial portion and 

 . basis of mandible, are carinate ; one or two setae. Stridulating area 

 oval, with rather coarse ridges; that of right and left mandible almost 

 of the same size. Manducatorial portion of right mandible with molar 

 part oblique, anteriorly low, posteriorly prominently projecting, sloping 

 gradually downwards from the upper part of the crown to the heel. 

 Crown with two transverse, obtusely carinate lobes, anterior to which is 

 a round depression framed by a thick and low elevation. Heel large, 

 transverse, subtrapezoidal, grinding surface flat, anteriorly with trans- 

 verse low elevation, posteriorly deeply emarginate with ventro-posterior 

 angle pointed, tooth-like, about as long as wide and with dorso-posterior 

 angle developed into a broad, long, rather obtuse process, about three 

 times as long as wide, extending over and completely covering bristle- 

 hearing base. Left molar part anteriorly prominent, posteriorly re- 

 tracted, crown trilobed ; upper lube .strong, large, anteriorly with margin 

 projecting and acute, and with grinding surface excavate; median and 

 posterior lobes much smaller, each carrying an obtuse, transverse carina, 

 which dorsally projects into a sharp tooth; ventrally the two lobes 

 fuse, terminating with a small round elevation. Heel suborbictllate, 

 anteriorly limited by a low transverse carina coming from a slender, 

 pointed, dorsal piliferous hook and disappearing towards the ventral 



