18 PROC. ENT. SOC. WASH., VOL. 23, NO. 1, JAN., 1921 



9-segmented (not 10-segmented as stated by Kuwana), bases approximate; 

 first segment large, slightly longer than broad, 2d nearly as broad but shorter, 

 the remaining segments becoming successively more slender, each being widest 

 near the outer end. Each segment bearing three or more slender setae, segments 

 6 to 9 each also bearing 2 heavier spines. Legs are moderately large, trans- 

 versely striated, trochanter bearing 1 long seta, the.femur, tibia and tarsus each 

 a number of small setae, particularly on inner margin. Tarsus bearing two 

 hair-like digitules and the tarsal claw two knobbed digitules. Eyes present, 

 mouthparts sometimes present. Spiracles occurring along the margin of body. 

 Dorsum of abdomen bearing transverse rows of large, simple, circular pores; 

 both dorsum and venter bearing internal ducts, which viewed from above have 

 the appearance of 8-shaped pores; others at tip of abdomen having the appear- 

 ance of 8-shaped pores, each surrounded by a compound ring. (Plate III J.) 

 Small setae present on both dorsum and venter. Anal ring not discernible. 



Second stage or apodous larva. Body nearly circular in outline, about 1.3 

 mm. long when full grown and in life of a brownish black color. (Plate III C.) 

 Without eyes, legs or antennae. Spiracles large and conspicuous. (Plate III.) 

 Surrounded by large numbers (more than ten) of small ducts and set at inner 

 end of rather short tubes, the latter perpendicular to the derm, except last 3 on 

 4 abdominal pairs which are at an acute angle. Derm slightly chitinized or 

 dorsum. Anal tube absent, anal ring not discernible. Male apodous larva 

 very similar to that of female except smaller. 



First stage larva. Body oval, acute at both ends, in life reddish brown, about 

 .3 mm. in length when full grown. (Plate III B.) Eyes prominent, situated on 

 margin of body, posterior to 6-segmented antennae, the latter with approximate 

 bases. Segment 1 large and broad, 2, 4 and 6 long, 3 and 5 short; segment 4 

 bearing 2 broad stiff spines and 6 bearing 2 broad stiff spines and a large nipple- 

 like process on its tip. Legs rather small, femur broad, tibia, tarsus and claw 

 slender, the latter bearing 2 knobbed digitules, tochanter bearing 1 long slender 

 seta. Segmentation of abdomen distinct. Spiracles resembling a row of but- 

 tons on each side of abdomen. Tip of abdomen rounded, bearing a short and a 

 long slender seta on each side of the apex. Derm somewhat chitinized. First 

 exuvium rupturing on the venter. 



Male prepupa very similar to adult female except somewhat smaller. Anten- 

 nae and legs similar in all respects. All 8-shaped pores simple, not surrounded 

 with a compound ring; without large circular pores. Eyes present. 



Male pupa possessing prominent wing pads, legs and antennae, the latter 

 apparently 9-segmented. Caudal end bearing a blunt central lobe. 



Male adult, typical male of the Margarodinae, with compound eyes, dusky 

 wings and caudal brush, well described by Mr. Kuwana. Legs and antennae 

 long and slender, transversely striated, the latter 9-segmented. Instead of 

 always being 10, the number of tubes from which the caudal brush arises, 

 varies somewhat, usually more than that number. 



This peculiar coccid as observed in American material, occurs 

 on the twigs of pine, yet is hardly discernible due to the fact 

 that it lives in a pit or gall under the surface of the bark (Plate 

 III A). No twigs from Japan have been observed by the writer, 



