NO. II LARVAE OF THE ELATERID BEETLES GLEN I39 



ventral margin of inner face sharp and slightly convex ventrally, 

 dorsal margin sharp and strongly convex dorsally. 



Ventral mouthparts from three-fourths to four-fifths as wide 

 across bases of stipites as at anterior ends of stipites. Cardines only 

 slightly separated. Stipes large, subrectangular ; proxistipes and dis- 

 tistipes not distinct; usually 4 or 5 prominent setae on antero-latero- 

 ventral aspect. Galea with basal joint subcylindrical, shorter than 

 terminal segment, without setae or pores; terminal joint about as 

 wide as basal joint, outer aspect longer than inner aspect, 2 or 3 

 pores on lateroventral surface. Maxillary palpi with all joints sub- 

 cylindrical. First segment slightly wider than long, with ventral sur- 

 face shorter than other surfaces; distally on mesoventral surface 

 with group of 3 or 4 small pores and 2 setae; i or 2 pores near 

 middle of ventral aspect. Second segment nearly as long as wide; 

 as long as first segment and almost as wide; without setae; i or 2 

 pores. Third joint about as long as wide; at least one-half length 

 of second joint; two pores ventrally; distally with i minute seta on 

 mesoventral aspect and i near lateral aspect. Fourth segment longer 

 than wide; about as long as third joint; i minute seta on dorsal 

 surface. Postmentum with i long seta at each corner ; i small seta 

 short distance caudad to each long anterior hair; minute pores and 

 sometimes i or 2 additional small setae along lateral margins. First 

 prementum with i large and i small seta just caudad to base of each 

 palpus, forming transverse row of 4 hairs. Labial palpus with basal 

 joint about one-half as long as first prementum, as long as wide, 

 without setae, 3 or 4 pores; terminal segment about three-fourths 

 length and one-half width of basal segment, without setae, usually 

 with I pore. 



Prothorax about three-fourths combined length of mesothorax 

 and metathorax; wider posteriorly; slightly wider than long. Ter- 

 gites minutely punctulate ; without well-defined impressions, but 

 each tergite with narrow pale line (sometimes branched) beginning 

 near middle of middorsal suture and running cephalolaterad across 

 about one- third of tergite ; anterior part of each tergite with about 

 9 prominent setae in transverse row, usually arranged as 3 pairs 

 and 3 unpaired hairs, the most lateral seta usually unpaired; pos- 

 terior part with 5 or 6 prominent setae in transverse row, arranged 

 as 3 pairs or 2 pairs and i unpaired ; glabrous elsewhere except for 

 few minute setae issuing from some of punctures. Episternum with 

 3 conspicuous setae. Epimeron bearing i small seta. Presternal 

 area of i large, triangular sclerite, posteriorly acute ; striate on antero- 



