NO. II LARVAE OF THE ELATERID BEETLES GLEN 87 



Mesothorax and metathorax each about twice as wide as long. Me- 

 diotergites punctulate, punctures larger and more numerous anteriorly ; 

 transverse branches of impressions reaching from one-fourth to one- 

 third distance from longitudinal impressions to middorsal suture; 

 longitudinal branches of impressions short. Anterior part of each 

 mediotergite without setae except for a few minute hairs issuing from 

 punctures; posterior part with transverse row of 6 to 9 unpaired 

 setae; lateral part with 2 to 4 setae along lateral margin. Anterior 

 laterotergite subtriangular, one-half as large as subovate posterior 

 laterotergite, i seta ventrally. Episternum with i or 2 fine setae but 

 without spinelike setae. Eusternum usually with 2 to 4 setae (only 



2 conspicuous) in transverse row just anterior to coxae. Mesothoracic 

 spiracle usually slightly larger than spiracles in abdomen. 



Legs subequal in length, of good length. Coxa with up to 25 spine- 

 like setae on anterior aspect, usually less on prothoracic legs ; a few 

 scattered fine setae on posterior surface. Trochanter with 6 or 7 

 spinelike setae on medioanterior surface; 3 to 5 such setae and a 

 few fine setae on posterior surface ; 2 well-developed setae on medial 

 aspect. Femur as long as or longer than trochanter and about as 

 thick ; usually with 8 to 1 1 spinelike setae on medioanterior surface ; 



3 to 6 spinelike setae and i slender seta on posterior surface ; i long 

 seta on medial aspect; i or 2 fine setae on lateral surface. Tibio- 

 tarsus with 6 setae around distal margin; 4 spinelike setae and i 

 slender seta on medioanterior surface ; 3 or 4 spinelike setae on pos- 

 terior surface. Ungula, when uneroded, at least three-fourths as 

 long as tibiotarsus. 



First to eighth abdominal segments subequal ; first segment short- 

 est ; third to sixth segments widest ; all segments wider than thick. 

 Mediotergites (fig. 19, g) with small punctures, larger and more 

 numerous in anterior half of segment; transverse branches of impres- 

 sions (trim) slightly sinuate; length variable, on second to eighth 

 segments reaching from one-half to three-fourths distance from lon- 

 gitudinal branch to middorsal suture (sometimes a faint impression 

 runs farther mediad, almost to dorsal suture), on first abdominal 

 segment reaching about one-half of distance to middorsal suture ; lon- 

 gitudinal branches of impressions (loim) extending back to or almost 

 to posterior transverse row of setae. Anterior part of each medio- 

 tergite without setae, except for a few minute hairs in some of punc- 

 tures. Posterior part of each mediotergite with 5 to 9 conspicuous 

 unpaired setae and a few smaller hairs, together forming an irregular 

 transverse row. Two to four setae on margin of mediotergite laterad 



