99 



PROCEEDINGS OF THE NATIONAL. MUSEUM. 



TOL. 60. 



with a single row of pores and six rather short setae ; anal lobes well 

 developed, but small, elongate, rather slender, tapering, with a stout 

 apical spine a little longer than the lobe, and three small stout setae 

 on the inner face of each ; anal ring surrounded by a simple, somewhat 

 chitinized tube, continuous with the lobes, this produced dorsally 

 into a median cauda, about as long as an anal lobe, tapering, and with 

 the apex rounded. 



Fig. 6. — SoLENOCoccus fagi (Maskbll). A. laeva, ouoplinb, dorsal, Xiis; B. larva, 



8-SHAPBD POEE, X 640 ; C. LARVA, QUINQDKLOCDLAR PORB, X 640 ; D. LARVA, MIDDLE LEG, 

 X335; E. LARVA, ANTENNA, X 335 ; F. LARVA, APEX OF ABDOMEN, X 440 ; G. ADOLT FBMALB, 



SPIRACLB, X 640 ; H. ADDLT FEMALB, OUTLINE OF BODY SHOWING POSITION OF STRUCTURES, 

 X30; I. ADULT FBMALB, DORSAL CRIBRIFORM PLATES, X 880 ; J. ADULT FEMALE, ANTENNA, 

 X640; K. SAME, ANAL LOBBS AND RING, SHOWING TERMINAL SETA AND DORSAL TRIANGULAR 



CAUDA, X335; L. SAME, BOOT SETA, X 1500 ; M-R. VARIOUS TYPES OF PORES FOUND ON 



BODY OF ADULT FEMALE, X 1500. 



InterTnediate stage female. — (from Maskell slide only) Appar- 

 ently differing from the adult only in having the antennae a little 

 more developed, in having more 8-shaped pores, occurring dorsally 

 as well as ventrally, and in lacking the cribriform plates. 



Larva. — (Maskell slide only) Oval, legs and antenna normally 

 developed, the latter 6-segmented, body with a marginal row of 

 large, 8-shaped pores set at the bottoms of short tubes and doubled 

 up, each in the abdominal region accompanied by a quinquelocular 

 disk pore, also with a dorsal median double row of the same 8-shaped 

 pores, these diverging anteriorly and becoming much reduced in size 



