NO. II LARVAE OF THE ELATERID BEETLES GLEN 59 



small seta anterad to dorsal pair and 2 or 3 minute setae in slight 

 longitudinal depression posterad to ventral pair. Eye spot black; 

 usually small and somewhat diffuse; ovate or circular; surrounded 

 by 4 setae, sometimes i additional minute seta between eye spot and 

 lateroepicranial setae. Postgenal areas expanded mesad, but well 

 separated ; glabrous. 



Gula short, relatively wide ; glabrous. 



Antennae with first joint clavate, nearly as wide as long; without 

 setae ; 2 or 3 small pores. Second joint subcylindrical, about as wide 

 as long; three-fifths length of basal joint; i or 2 pores, a few small 

 pegs and setae borne distally, i laterad to, and almost as long as, 

 "sensory" appendix; i medium-sized, conical "sensory" appendix 

 just ventrad to base of third joint. Terminal segment small, barely 

 half as long as second joint and one-third as wide ; 4 setae on apex. 



Mandibles of moderate length, robust ; two-thirds as wide at base 

 (ventral aspect) as long; retinaculum well developed; penicillus some- 

 times reaching base of retinaculum. Distal half inward bending, 

 pointed ; outer surface convex with long, shallow, dorsal groove ; inner 

 aspect sharp, convex ventrally, excavate dorsally. 



Ventral mouthparts about three-fourths as wide across bases of 

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

 large, subrectangular ; proxistipes and dististipes not distinct ; usually 

 4 to 6 prominent setae on antero-lateroventral aspect. Galea with 

 basal joint subcylindrical, slightly shorter than terminal joint, usually 

 without setae or pores ; terminal joint narrower than basal segment, 

 outer margin longer than inner margin, 7 to 9 pores on lateroventral 

 aspect. Maxillary palpi with all segments subcylindrical. First seg- 

 ment slightly wider than long; distally on mesoventral surface with 

 group of 2 or 3 small pores and 2 setae. Second joint distinctly wider 

 than long; slightly shorter than first joint; without setae; 3 or 4 

 pores. Third joint wider than long; at least two-thirds length of 

 second joint; 2 pores ventrally; distally, i minute seta on mesoventral 

 aspect and i near lateral aspect. Fourth segment as long as wide; 

 about as long as third joint and at least one-half as wide; without 

 setae; i pore. Postmentum with i long seta at each corner and i 

 minute seta short distance caudad to each long anterior hair; few 

 minute pores scattered over surface, i larger pore just anterad to 

 each long anterior hair. First prementum with i large seta and some- 

 times also I smaller seta just caudad to base of each palpus. Labial 

 palpi with basal joint about one-half length of first prementum, us- 

 ually longer than wide, i small seta and 2 to 5 pores on ventral sur- 

 face; terminal joint small, from one-half to two-thirds length and 



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