NO. II LARVAE OF THE ELATERID BEETLES GLEN 121 



segment almost as long as wide, about one-half length of second seg- 

 ment, bearing 2 to 4 pores ventrally; distally with i minute seta on 

 lateral aspect. Fourth joint longer than wide, about as long as third 

 joint, but narrower ; i pore dorsally. Postmentum with i long seta 

 at each corner ; a few minute pores scattered along margins. First 

 prementum with i large seta just caudad to base of each palpus. 

 Labial palpus with basal segment at least one-half as long as first 

 prementum ; longer than wide ; with i seta ventrally ; sometimes 2 or 3 

 minute pores. Terminal segment shorter and much narrower than 

 basal joint ; without setae ; usually with i or 2 pores. 



Prothorax about three-fourths combined length of mesothorax and 

 metathorax ; wider posteriorly ; slightly wider than long. Tergites 

 with a few small shallow pits ; anteriorly with 4 setae, rarely 5 (on 

 each side of median dorsal suture) in transverse row, usually arranged 

 as I pair in the middle of the row and the most lateral and most medial 

 setae unpaired, sometimes arranged as 2 pairs with an unpaired seta 

 farther laterad ; posterior part of each tergite with 3 setae in trans- 

 verse row arranged as i unpaired lateral seta and i pair (i short, 

 I long) farther mediad ; tergites glabrous between anterior and poste- 

 rior rows of setae. Episternum with i large seta near center and 

 I or 2 minute hairs near presternum. Epimeron bearing i small seta. 

 Presternal area consisting of i large triangular sclerite ; posteriorly 

 acute ; anterolateral aspects striate ; i large seta near each side ; ante- 

 riorly near mid ventral line are 2 short oblique rows, each of 3 or 4 

 minute setae. Eusternum small, membranous or faintly sclerotized ; 

 furcal pits well developed. Sternellum and poststernellum indefinite, 

 small, membranous. 



Mesothorax and metathorax each about twice as wide as long. 

 Mediotergites sparsely and shallowly punctulate ; impressions want- 

 ing. Anterior part of each mediotergite with i moderate-sized seta 

 laterally and usually 10 to 20 very small setae scattered irregularly 

 along anterior margin ; posterior part of mediotergite with transverse 

 row of 3 conspicuous setae, i near lateral margin and a pair farther 

 mediad ; glabrous elsewhere except for minute setae in some of pits. 

 Anterior laterotergite subtriangular, one-half as large as subovate 

 posterior laterotergite. Episternum bearing up to 10 prominent spine- 

 like setae, usually somewhat scattered, but mostly in i row ; some- 

 times also several minute fine setae. Mesothoracic spiracle about equal 

 in size to spiracles in abdomen. 



Legs subequal in length. Coxa with up to 25 spinelike setae on 

 anterior aspect ; several short stout setae and a few scattered hairs on 



