E-\RLY Stages of Coleoptera. 339 



Antennae inserted just behind the mandibles, three-jointed, 

 the first joint ven,- long and heavy and bearing numerous bris- 

 tles intemallv. Second joint short, more slender, third still 

 shorter and slenderer, tipped by a long bristle. I have a 

 carefullv prepared dissection of the top of the head of this 

 species and am positive that there is no basal joint "gros et 

 court" such as M. Eug. Duges^ has credited to the larva of 

 T. lateralis. The antennal tubercle has the appearance of a 

 joint in the natural specimen but when cleared and examined 

 under the microscope it is seen not to be a true joint since 

 there is apparently no suture. 



Mandibles strong, cur\-ed, with a large and strong tooth 

 about the middle, below which is a much smaller blunt one. 



Maxillce longer than the antennje, five-jointed,- first joint 

 long and heavv, only slightly bristly. Second joint shorter, 

 bearing internally at the tip a small bristle-tipped tubercle. 

 Third joint about one-third the length of the second, fourth 

 about the length of the second, fifth again shorter and pointed 

 at tip. 



Mentum transverse, the anterior angles prominent and pro- 

 duced, bearing four spines on the under surface near the base 

 of the ligula, which is sub-oval narrowed to the base, apex 

 bearing the two-jointed palpi of which the second joint is 

 about three times the length of the first and tipped with one 

 long and two short bristles. Between the palpi is an appendix 

 or process, probably the latter, as I can find only a mere indi- 

 cation of suture — which is about twice the length of the first 

 joint of the palpi. 



Prothorax narrowed in front, apex arcuate and sinuate, 

 partly covering the base of the head. The anterior margin is 

 depressed and longitudinally striate, the posterior margin 

 smooth, while the disk is covered with granules. 



Mesothorax shorter and broader than the prothorax and 



1 Ann. Soc. Ent. Belg.. XXVIII, p. S. 



• Duges {loc. cit.) calls them six -jointed in T. lateralis. I cannot find a basal 

 joint in m_v species. 



