198 Illinois State Lahoratory of Natural History. 



relationship with the predaceous genus Dicranota, and 

 suj>;gests the possibility of a like habit of life. 



Larva [Fig. 23-25].— Length 12-13 mm., diameter 

 about 1 mm. Cylindrical, elongate, body tapering slightly 

 near each end, densely covered with fine silky dark brown 

 or nearly black pubescence, not transversely arranged^ 

 with only a few erect setae, surface of body fusco-testa- 

 ceous. 



Head oblong, retractile, depressed, prolongations con- 

 verging behind, surface mostly dark brown or blackish; 

 antennae short, first joint oblong, pale brownish, second 

 very small and slender; mandibles dark brown, three 

 large blunt teeth near apex, and a few on lower edge; 

 remainiug mouth parts testaceous or whitish, labrum 

 whitish on disk; mentum blackish, trilobed ; gular mem- 

 brane rather long and narrow, a pair of curved points 

 invading it anteriorly. 



First four segments about as long as wide, first long- 

 est and divided into two parts by a well-marked suture; 

 next six about twice as long, divided by pseudo-sutures 

 into two divisions; eighth abdominal narrower, broader 

 than long, last a little shorter. Body each side with an 

 indistinct lateral line above and below the lateral area^ 

 consisting of whitish dots. Dorsal and ventral surfaces 

 of first four segments and posterior division of next six 

 with a small central bare spot, from which arises a dark 

 seta or bristle; thoracic segments laterallj^ with a dark 

 seta, first abdominal and remaining posterior divisions 

 with two lateral setae. Anterior divisions with a short 

 transverse pale line each side above. Divided segments 

 (second to seventh abdominals) with a prominent large 

 transverse elevation beneath on anterior divisions, lighter 

 colored and bordered by a pale line, covered with minute 

 scabrous points in close and regular transverse rows; 

 lateral areas with a few large wart-like paler tubercles 

 near each suture. 



Last segment [Fig. 24] with posterior face whitish, 

 surrounded by five subtriangular fleshy teeth, somewhat 



