220 



The normal larva has very small, two-jointed legs, the thorax 

 is slightly larger than the abdomen, the eighth and ninth abdom- 

 inal segments are turned ventrally nearly at right-angle to the 

 rest (Fig. 1). In the abnormal specimen, which is not a fully 

 grown one, there arises from each side of the second and third 

 thoracic segments a well-defined wing-pad supplied with tra- 

 cheae; the legs of this specimen, instead of being minute two- 

 jointed organs, are very much larger and distinctlv six-jointed. 

 (Fig. 2.) 



In the male pupa the antennae, arising from near the apex of 

 the rostrum, lie along each side of the head, the head and rostrum 

 being deflexed and lie on the ventral surface of the thorax; in 

 the female the antennae, which arise about the middle of the 

 rostrum, encircle the thorax (Fig, 3). Mr. Swezey states that 

 the burrows in which the beetle pupates is only slightly larger 

 than the beetles in circumference, and as half and wholly mature 

 beetles are found in the burrows with the head extended in front, 

 in the normal adult position, it would appear that the head and 

 rostrum are straightened out immediately upon emerging from 

 the pupa, while the insect is still soft. The writer has observed 

 a similar state of things with Brenthids in Larat and it is prob- 

 ablv the usual thing with Brenthids. 



Lasiorhynchus barbicornis. 

 Fig. 1 — Normal larva. Fig. 2 — Abnormal larva. Fig. 3- 



-Female pupa. 



