xo. 2156. SUBFAMILY ALEYRODINAE—QVAINTANCE d BAKER. 339 



marginal pores which produce a short but abundant horizontal secre- 

 tion of wax. Thero are ventrally on margin a series of pores which 

 produce a smaU quantity of wax. The dorsimi is covered with a 

 large number of short but stout spines. These spines are grouped as 

 follows. There are 30 hooked spmes formmg a ring around the 

 dorsum just within the margm. The other spinos are shorter and 

 are situated as f oUows. A double row of eight spines across the ceph- 

 ahc region; four spmes on the thoracic region; 16 spines in a row 

 down the mesio dorsal ridge on the abdominal region; two rows of 

 three spines, one row on each side of the mesio dorsal ridge on first 

 and second abdominal segments ; two rows of two spines placed simi- 

 larly on third and fourth segments and one spine on each side of the 

 mesio-dorsal ridge on the fifth segment. A pair of short stout spmes 

 placed, one on each side of the vasiform orifice. Two long setae 

 caudad and two cephalad on margm. The vasiform orifice is situated 

 on a short tubercle at the posterior end of the mesio dorsal ridge; 

 shape, oval. Operculum similar in shape but somewhat smaller, 

 the lower half apparently shghtly ridged. Lingula mdistinct, shape 

 rectangular, broader than long. It is completely covered by the 

 operculum. 



Adult. — Unknown. 



This Aleurodid occurs plentifully on various species of bamboo in 

 the vicinity of Calcutta. As a rule only a few leaves in a bamboo 

 clump are attacked by the insect. I have, however, sometimes found 

 it occurring in very large nmnbers in some bamboo clumps. It then 

 undoubtedly is a rather serious pest as frequently most of the leaves 

 are then killed. The insect is kept in check by a parasite, presuma- 

 bly a chalcidid, as large numbers of dead insects can always be found 

 which have the minute hole on the dorsum made by the parasite for 

 its exit. I have so far obtained no specimens of the parasite. When 

 this Aleurodid is detached from the leaf it will be observed that the 

 portion of the leaf beneath the insect is yeUow and discolored. As a 

 rule the exuviae of the preceding stages remains attached to the 

 spines on the dorsum. (Peal.) 



ALEUROCANTHUS BANKSIAE (Maskell). 



Plate 33, figs. 1-5. 



Aleurodes hanksiae Maskell, Trans. N. Zeal. Inst., vol. 28, 1896, p. 423. 



It is with some hesitation that we place this species here. The 

 type of the pupa case, which is a soUtary specimen in a balsam mount, 

 is in such condition that it is impossible to make out details. The 

 larva possesses numerous spines and is otherwise quite similar to the 

 forms we are placing m this group, and it is on the strength of this 

 larval structure that we place the species in Aleurocanthus. 



