NO. II LARVAE OF THE ELATERID BEETLES GLEN 99 



margin, with 4 or 5 pores on lateroventral aspect. Maxillary palpi 

 with all segments subcylindrical. First segment wider than long; 

 5 or 6 small pores and 2 setae on ventral surface. Second segment 

 as long as wide ; as long as first segment and almost as wide ; with- 

 out setae ; 2 or 3 pores. Third segment wider than long ; about one- 

 half length of second segment; 4 or 5 pores ventrally; distally with 

 I or 2 small setae on mesoventral aspect and i seta on lateral aspect. 

 Fourth segment longer than wide; longer than third segment; i 

 small seta proximally on dorsal aspect ; without pores. Postmentum 

 elongate, almost twice as wide anteriorly as posteriorly; i long seta 

 at each posterior corner, 2 long setae near each anterior corner ; i or 

 more setae along each side; few minute pores. First prementum 

 with 2 (sometimes more) prominent setae just caudad to base of 

 each palpus, forming transverse row of at least 4 setae. Labial palpi 

 with basal joint cylindrical or slightly clavate, more than one-half 

 length of prementum, longer than wide, without setae, 2 to 4 pores ; 

 terminal segment more than one-half length and about 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. Tergites 

 minutely punctulate ; with from 30 to 45 setae (on each side of median 

 dorsal suture) arranged as follows: anteriorly with 15 to 20 setae 

 in a confused transverse row (most abundant laterally), posteriorly 

 with 6 to 10 setae in an irregular transverse row, and 10 to 15 setae 

 scattered between these rows mostly near the lateral margin. Epis- 

 ternum with 3 large setae. Epimeron bearing i small seta. Presternal 

 area consisting of 3 sclerites as follows : a small posterior median scle- 

 rite, anteriorly attenuate, with 2 small setae anteriorly ; 2 large, subtri- 

 angular lateral sclerites (sometimes joined anteriorly), striate on 

 anterolateral aspect, with i stout seta laterad to center and a diagonal 

 row of 4 or 5 minute setae on anteromedial aspect. Eusternum small, 

 membranous or weakly sclerotized. Sternellum and poststernellum 

 indefinite, small, membranous. 



Mesothorax and metathorax each at least twice as wide as long. 

 Mediotergites rugulose ; punctulate ; transverse branch of impression 

 indefinite, consisting of a few disconnected punctures; longitudinal 

 branch wanting. Each mediotergite bearing about 20 setae, usually 

 arranged as follows : posterior transverse row of 6 to 10 setae, 8 to 10 

 setae along lateral margin, 2 or 3 slightly farther mesad and i long 

 seta near center of sclerite. Posterior laterotergite large, subovate 

 or subtriangular, bearing i large seta near dorsal margin. Anterior 



