26 BULLETIN OF THE BROOKLYN EXT. SOC. 



Description of the Larva of Chlrenius leucoscelis, Chevr. 



The general appearance of the larva of Chloenius leucoscdis is very 

 different from that of Chlceniv& laticoHis, Say, described in our last 

 number, being much stouter and the tergal scutes much broader, of 

 a deep shining black, covering the whole tipper surface, so that it re- 

 sembles rather the larvae of Carabus or Silpha, while the larva of lati- 

 cottis resembles more that of Dicpelus. 



Length of the full-grown larva 20 mm.; width of third abdominal 

 segment, 5 mm. ; length of anal appendage, 5 mm. 



Color: Head dark red, upper surface deep black; beneath, pro- 

 thorax with a black tridentate scute at base, meso- and meta-thorax 

 with a small cuspidate scute at the middle, pointed towards the base 

 and surrounded by four minute round scutes, abdominal segments 1 to 

 7 have the same arrangements of scutes as the larva of Dicaelus (see 

 Bull., vol. i, p. 3) ; the eighth segment has a large sub-quadrate scute 

 at the middle and two long narrow scutes at the sides ; the ninth seg- 

 ment is entirely black ; there is also a small leaf-shaped scute behind 

 each spiracle somewhat more towards the surface. Coxre and femora 

 black, tibiffi rufous ; in young larva, base and apex of anal fork pale 

 and middle black, in full grown, base dark and rest fuscous. 



The labrum of laticollis has five teeth, while in leucoscelis the mid- 

 dle tooth- is bifid, broader and shorter than the four lateral teeth, 

 and between each of the latter is a series of minute tubercles, usually 

 two or three. The whole surface is punctured, more densely at the 

 exterior. 



The first joint of maxillse is much broader at the apex (while in 

 leucoscelis it is broader at base), and the first joint of the inserted 

 process is thickened at middle, somewhat club shajDed. 



The mandibles are much more incurved at the exterior near the 

 base. 



But the most important difference between the two species is an 

 area with three small teeth near the tip at the exterior of the third 

 antennal joint, the tooth nearest the tip being the largest. 



A plate, illustrating the descriptions of these larvas, will appear 

 in either the October or November number. 



F. G. Schaupp. 



