NO. II LARVAE OF THE ELATERID BEETLES GLEN 79 



seta laterad to center and a row of 4 or 5 minute setae on antero- 

 medial aspect ; and a very narrow, median, anterior piece. Eusternum 

 small, membranous or weakly sclerotized. Sternellum and poststernel- 

 lum indefinite, small, membranous. 



Mesothorax and metathorax each about twice as wide as long. 

 Mediotergites punctulate ; transverse branches of impressions reaching 

 about one-fourth to one-third distance from longitudinal branches to 

 middorsal suture; longitudinal branches of impressions short, about 

 one-half length of transverse branches. Anterior part of mediotergite 

 without setae ; posterior part with 4 or 5 conspicuous unpaired setae 

 in transverse row, all well removed from median dorsal suture; 

 lateral part with 2 large setae and sometimes i small seta, the most 

 anterior hair being laterad to longitudinal branch of impression; 

 minute setae sometimes observable in punctures. Anterior latero- 

 tergite subtriangular or subovate, one-half as large as subovate pos- 

 terior laterotergite. Episternum without spinelike setae, i or 2 short, 

 fine setae. Eusternum with 2 conspicuous setae, sometimes 2 to 4 

 minute setae. Mesothoracic spiracle slightly larger than spiracles 

 in abdomen. 



Legs subequal in length. Coxae of prothoracic legs with from 10 

 to 16 spinelike setae on each anterior aspect, on mesothoracic and 

 metathoracic legs with 17 to 21 such setae, mostly in i row; 2 or 3 

 stout setae and a few fine hairs on posterior surface. Trochanter with 

 5 or 6 spineHke setae on medioanterior surface; 2 to 5 such setae 

 and I fine seta scattered on posterior surface ; 2 well-developed setae 

 on medial aspect. Femur usually with 6 to 8 spinelike setae on medio- 

 anterior surface; 2 to 4 spinelike setae and i slender seta on pos- 

 terior surface; i long seta on medial aspect; i or 2 fine setae on 

 lateral surface. Tibiotarsus with 5 or 6 setae around distal margin ; 

 2 to 4 spinelike setae and i slender seta on medioanterior surface; 

 I to 3 spinelike setae on posterior surface. Ungula, when uneroded, 

 about three-fifths as long as tibiotarsus. 



First to eighth abdominal segments subequal ; first segment shortest ; 

 fourth to sixth segments widest. Mediotergites (fig. 18, &) punctulate ; 

 transverse branches of impressions (trim) slightly sinuate, on second 

 to fifth segments reaching to or nearly to median dorsal suture, on 

 sixth and seventh segments usually slightly shorter, on eighth seg- 

 ment definitely not reaching dorsal suture, on first abdominal segment 

 reaching only about one-half distance to dorsal suture (in a few 

 specimens examined the transverse branches failed to reach the median 

 dorsal suture in any segment) ; longitudinal branches of impressions 

 (loim) extending obliquely backward at least two-thirds of distance 



