316 Annals Entomological Society of America [Vol. IX, 



dark brown or blackish, pear-shaped eggs deposited so as to 

 stand on the small end. The larvae emerged from the free end 

 of the egg through a lidlike opening in the shell. 



An interesting note on the oviposition of a New Zealand 

 species, Oncodes brunneus Hut. {Henops brunneus), is given by 

 W. M. Maskell (13) as follows: "About October last a resident 

 in the Wairarapa District sent down to the Colonial Museum a 

 few twigs of apple, quite covered with some black substance, 

 amongst which were slowly crawling about half a dozen rather 

 large flies; and he desired some information on this, which he 

 considered a new 'blight,' stating that it occurred on both 

 apple and peach trees in his garden. The specimens were 

 referred to me, and at first sight I thought the sooty, black 

 coating to be the usual fungus accompanying scale insects, the 

 flies being unconnected with it. Closer examination, how- 

 ever, showed that the black mass was really composed of many 

 thousands of eggs; and the flies were soon observed to be still 

 laying more of these eggs on the twigs, until in a short while it 

 was so thickly covered with them as to be quite hidden." 



THE NEWLY HATCHED LARVA OF PTERODONTL\. 



From eggs which were deposited on August 7th, larvce 

 emerged September 7th and 8th, thus making an incubation 

 period of 32 to 33 days. The larvae made their exit through a 

 lidlike opening at the small, or pointed, end of the eggs. The 

 newly hatched larvae (Figs. 11 and 12) are Campodea-like in 

 form, resembling quite strikingly the planidium larvae of 

 Perilampus* or the triungulin larvae of Stylops. They are dark 

 brown or black in color and measure 0.25 mm. in length, exclusive 

 of the caudal setae. The body consists of twelve segments 

 including the head. 



The head segment is distinct though it is firmly joined to the 

 prothoracic segment. The head appendages consist of two 

 ventral mouth-hooks and two caudo-lateral antennalike setae. 

 The details of the mouth-parts have not been worked out. 

 There is, however, a large internal pharyngeal vskeleton which is 

 very distinct. The latter structure consists of two strongly 

 chitinized dorsal plates (Figs. 7 and 11) and a slightly chitinized 



*See Smith, H. S. The Chalcidoid genus Perilampus and its relations to the 

 problem of parasite introduction. U. S. Dept. Agr. Bur. Ent., Tech. Series No. 19, 

 1912, pp. 33-69. 



