NO. II LARVAE OF THE ELATERID BEETLES GLEN 5^ 



of transverse ridge, anteriorly convex; serrate, when uneroded, with 

 about 7 subequal short, sharp, forward-projecting denticles. Paranasal 

 lobes produced beyond nasale, each bearing 2 prominent setae and 2 

 to 4 minute setae. 



Epicranial plates sparsely and finely punctulate. Dorsal sulci 

 shallow, each bearing 5 setae subequally spaced, the most anterior 

 seta being very long, the next seta minute and sometimes wanting, 

 the 3 most posterior setae small. Ventral sulci bearing row of 7 to 

 10 setae, usually about 2 to 4 conspicuous. Three large lateroepicranial 

 setae arranged as a dorsal pair and an unpaired ventral seta, usually 

 with I or more small or minute setae caudad to unpaired hair. Eye 

 spot black, well defined, ovate or circular; surrounded by 3 setae, 

 rarely with an additional extremely minute seta. Postgenal areas 

 expanded mesad, but always rather widely separated ; glabrous. 



Gula short, relatively wide ; glabrous. 



Antennae with first joint weakly clavate, two-thirds as wide as 

 long ; without setae ; 3 or 4 small pores. Second segment subcylindri- 

 cal, almost as wide as long; one-half length of basal joint; i or 2 

 pores ; a few small "sensory" pegs borne distally ; i medium-sized 

 conical "sensory" appendix just ventrad to base of third joint. Termi- 

 nal segment small, about one-half as long as second joint and one- 

 quarter to one-third as wide; 4 setae on apex. 



Mandibles of moderate length, robust; about three-fifths to five- 

 sevenths as wide at base (ventral aspect) as long; retinaculum well 

 developed ; penicillus sometimes reaching base of retinaculum. Distal 

 half inward bending, pointed ; outer surface convex with deep dorsal 

 groove ; inner face slightly excavate with small median carina, ventral 

 margin of inner face sharp and slightly convex ventrally, dorsal 

 margin sharp and strongly convex dorsally. 



Ventral mouthparts only about three-fourths as wide across bases of 

 stipites as at anterior ends of stipites. Cardines well separated. Stipes 

 large ; proxistipes and dististipes not distinct ; usually 4 or 5 prominent 

 setae on antero-lateroventral aspect, sometimes also i or 2 smaller 

 hairs. Galea with basal joint subcylindrical, slightly shorter than 

 terminal joint; without setae; 2 or 3 faint pores. Terminal segment 

 narrower than basal segment, outer margin longer than inner margin, 

 with 7 to 9 pores on lateroventral aspect. Maxillary palpi with all 

 segments subcylindrical. First segment wider than long; distally on 

 mesoventral surface with group of 4 or 5 small pores and i relatively 

 large and i smaller seta. Second segment wider than long; as long 

 as first joint and about as wide; without setae; with 4 or 5 pores. 

 Third joint wider than long; about one-half length of second seg- 



