4 Journal of Knt()m(il<)j;\ and Zoolojiy 



chionea Alexander, should be isolated from the Eriopteraria where 

 now placed and made a separate subtribe, the Chionearia or 

 Claduraria, the former name being based on the oldest genus. 



DESCRIPTIOxN OF THE IMMATURE STAGES 



Larva — Length (fully grown), 10-10.5 mm. 



Diameter, 1.2 mm. 



General coloration light yellow throughout. 



Form comparatively short and stout. Integument provided 

 with a delicate appressed pubescence; no di.stinct setae. Abdomi- 

 nal segments divided into a narrow basal annulus and a much 

 broader posterior annulus, the latter being approximately two and 

 one-half times as long as the former ; the ventral surface of the 

 basal annuli of abdominal segments two to seven with a conspicu- 

 ous transverse area of microscopic foints arranged in long trans- 

 verse rows. 



Spiracular disk entirely destitute of lobes, the spiracles being 

 located on the obliquely truncated dorso-caudal surface of the last 

 abdominal segment. Spiracles circular, the ring pale, the centers 

 dark; spiracles separated from one another by a distance about 

 equal to or a little less than the diameter of one. Ventral surface 

 of the terminal abdominal segment with a projecting, flattened 

 lobe that is provided with a dense brush of short, pale setae, th's 

 organ presumably being used for propelling the insect through 

 the soil. 



Head entirely retractile. Head-capsule very compact for a 

 member of the Eriopterini. Frontal plate broad, only slightly nar- 

 rowed behind, the apex obtuse or subtruncate. Labruni-epiphar- 

 ynx quadrate, the surface covered with short, dense hairs; on 

 either side a stout ova! arm or lobe directed cephalad, these arms 

 connected by narrow bars, with the frame-work of the head. Men- 

 tal bars entirely separate, each bar with two acute teeth on the 

 cephalic side immediately before the apex. Antennae two-seg- 

 mented, the basal segment short-cylindrical, the terminal segment 

 elongate-oval, gradually narrowed to the obtuse ajiex. Mandibles 

 relatively s'eiuler. of a herbivorus tyi e, tlie teeth blunt: anical 

 point small ; two incomplete rows of flattened obtuse denticles 

 along the inner face of the mandible, the outermost tooth of each 

 row largest, the others gradually smaller, becoming subobsolescent ; 

 the basal teeth are very tiny, arranged in short combs; proximal 

 caudal angle of the mandible produced into a cylindrical chitini/.ed 

 ])ar. Maxillae consisting of simple hairy lobes. 



Pi(j)(i — Length, 6.7 mm. 



Width, d.-s., 1.4 mm. 



Depth, d.-v., 1.4 mm. 



