418 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



segment. In the next abdominal segment it is enlarged (pi. 67, fig. 13) 

 and contracts again as it is leaving this segment. 



Adult female. — Color of specimens preserved in alcohol pale yel- 

 lowish to almost white, with a large dusky area on the dorsum of 

 abdomen ; wings transparent, colorless, with sometimes a faint dusky 

 shading; eyes dark brown. 



Length from vertex to tip of ovipositor 1.12 mm.; forewing 1.28 

 mm. by 0.56 mm.; hind tibiae 0.432 mm.; proximal segment of tar- 

 sus armed with two longitudinal rows of stout spines, of which the 

 distal one of the rows is especially stout. There are also on the seg- 

 ment, particularly on the distal part, a large number of fine hairs. 

 The distal segment is armed with two pairs of stout spines and numer- 

 ous fine hairs; claws not strongly curved; paronychium long, acute, 

 and hairy; vertex rounded. Antennae of seven segments, the first 

 subcylindric, short, and thick; second subpyriform; third and dis- 

 tal ones subcyhndric and armed with annular sensoria. These are 

 more prominent on segments VI and VII than on the others. Seg- 

 ments III and VII are each also armed distad with a circular, fringed 

 sensorium, and VII is tipped with a bristle. Length of segments as 

 follows: I 0.021 mm.; II 0.048 mm.; Ill 0.105 mm.; IV 0.015 

 mm.; V 0.024 mm.; VI 0.045 mm.; VII 0.06 mm. The radial sec- 

 tor is prominent in the forewing and ciu-ved on its distal part, while 

 the cubitus is faintly represented ; the margin of wings is armed with 

 knob-hke projections on which minute hairs are situated. The ovi- 

 positor is acute, distinctly three-cleft, and dark in color. It is armed 

 with stout spines, the distal ones of which are long, extending almost 

 to the tip of the ovipositor itself. 



DULEURODES (DIALEURODES) RADIIPUNCTA, new species. 



Plate 66, figs. 5-7. 



Pupa cases of this species were received from Mr. A. Rutherford, 

 and marked Memexylon, Peradeniya, Ceylon, November 10, 1913. 

 The species is interesting as it shows the ring of teeth present on the 

 inner margin of the vasiform orifice, as in the typical subgenus Dia- 

 leurodes, whereas the other characters are those of that group of the 

 genus (Rusostigma) wherein these teeth are lacking. 



PujM case (fig. 5). — Size 1.44 by 1.312 mm.; color pale yellow- 

 ish, almost transparent, with a median dark gray or light brown 

 shading. Suture separating the thorax and abdomen distinct and 

 extending to the margins; margin almost entire, the wax tubes being 

 represented by very shallow irregular teeth ; submarginal area closely 

 striate, with suture-like markings forming a distinct zone around 

 case. Tracheal pores (fig. 7) distinct, situated a short distance from 

 the margin and armed within with four or five very irregular teeth; 

 tracheal fold marked with many small circular dots forming a band, 



