508 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



mass which is probably a visceral gland. The vasiforni orifice is 

 elongate-ovate, cephalic margin straight and not as wide as the l)road- 

 est part of the orilice, caudal end broad and acute- emarginate on the 

 median line; the orilice is bounded by a dark rim, the inner margin of 

 which is strongly chitinized and in folds; deeper within the cavit}', it 

 is semitransparent; operculum subsemielliptical, more than half the 

 length of the orifice and not quite as wide, free and somewhat pointed; 

 entire organ densely setose; lingula about four-fifths as long as the 

 orifice, con\'(\x dorsally. cylindrical at ])ase but becoming broadl}^ 

 spatulate at the distal end. on which are three pairs of lateral lobes 

 and a terminal lobe. Eye-spots small and undivided. 



Adults. — Unknown. 



Cofypes.—^o. 7090, U.S.N. M. 



This species is neither plentiful nor omnivorous, being restricted to 

 the Arlnttus menziesii in the districts where the author has found it; 

 on this host it inhabits the under sides of the leaves in common with 

 A. errans., and because of the presence of the latter it has not been 

 possible to verif}^ the larval stages, as all found were apparently of 

 A. errans. Collected during June, 1901, on the slopes of King's 

 Mountain. 



26. ALEYRODES NICOTIANS Maskell. 



Alei/rodca nkotmrne Maskell, Trans. New Zealand Inst., 1895, p. 436; Entom. 

 News, VII, p. 247. 



On Nicotiana tabacum, Guanajuato, Mexico. 



27. ALEYRODES PARVUS Hempel. 



AJeijnidi's jiarvus Hempel, Psyche, VIII, No. 280, p. 395. 

 On Maytenns sp., Sao Paulo, Brazil. 



28. ALEYRODES STANFORDI, new species. 

 Plate XXX, figs. 22-25. 



Eggs. — Size, 0.23 by 0.1 mm.; length of pedicel, 0.04 mm.; oval; 

 color yellow, shell marked with irregular polygons; this character 

 often seems to be wanting, but when the shell is examined by trans- 

 mitted light it has always been present. Pedicel on convex curve at 

 one side of center of base. The chorion is so firm that empty shells 

 retain their shape. 



Larva. — Size, 0.35 by 0.2 mm.; oval; the margin has a narrow, 

 lateral fringe of white wax rods somewhat covered with fiocculent 

 wax; color shining black, sometimes iridescent by transmitted light, 

 yellowish l)rown. The dorsum is free from secretion, convex, and 

 sculptured; it has a distinct, thickened, defiexed marginal rim, which 

 is sharply demarked from the dorsum by a ridge; this rim is formed 

 of closely set, adjacent, cylindrical tubes, the ends of which form deep 



