32 PROCEEDINGS OF THE NATIONAL MUSEUM vol.71 



Adult female. — See Maskell paper for description of test ; body as 

 mounted as much as 2.6 mm. long by 2.2 mm. wide, usually ovoid, 

 somewhat broadened behind the middle ; derm membranous through- 

 out; antennae fairly well developed for the genus, normally 8-seg- 

 mented; length about 230/^, some, at least, and probably all of the 

 legs present as short poorly developed stubs; spiracles stout but not 

 large, set well in from the margin, the anterior joined to margin by 

 pore band about three pores wide, the posterior with a split and 

 diverging double band reaching the margin at two points and each 

 portion about one to two pores wide; beak stout conical, 1-seg- 

 mented; marginal setae apparently very few, actually definitely ob- 

 served only near posterior apex of body, here slender, rather elongate, 

 about 11 fi. long; with the two anterior spiracular spines on each side 

 closely associated, approximately equal in length, measuring from 

 29/x to 40/x in length, variable in shape, sometimes somewhat clavate, 

 usually more nearly cylindrical, usually slightly curved, posterior 

 two on each side well separated from each other, resembling the 

 anterior in size and shape, but usually a little shorter, around 28/x to 

 36/A long; with an occasional small dorsal seta, these, however, 

 apparently quite rare, and ventrally with an occasional small stiff 

 seta, and, in the region of the genital opening, several elongate, 

 slender setae with one pair anterior to the anal plates still longer but 

 very slender and not at all conspicuous, perhaps 48/a long; 8-shaped 

 pores, although small, fairly numerous and rather uniformly dis- 

 tributed dorsall}', definitely, though not conspicuously larger towards 

 and at margin, these last bounded in the submarginal ventral area by 

 a fairly distinct loose double row of smaller 8-shaped pores each 

 definitely aligned along the axis of the row ; and with much smaller 

 obscurely 8-shaped pores scattered between this band and spiracles; 

 tubular ducts rather numerous, approximately uniformly distributed 

 dorsally, somewhat more abundant towards margin, of moderate 

 size; abdominal disk pores, normally with 10 loculi each, in eight 

 definite transverse rows with traces of a ninth visible, the three pos- 

 terior actually clusters or bands of pores, the remainder single rows, 

 these much attenuated anteriorly; spiracular disk pores normally 

 quinquelocular, the anterior band entire, the posterior split, the two 

 parts diverging to the margin; tiny simple pores scattered fairly 

 uniformly over dorsum, not numerous; cribriform plates normally' 

 in two rows of three each, roughly circular, longest diameter around 

 25/x-28ju., surface somewhat convex medially, finely and closely areo- 

 late; anal plates, as flattened on slide, triangular, ridged and 

 wrinkled, bearing two relatively large setae near middle line, well 

 away from upper margin, each of these about 21/i long, and one to 

 three tiny pores, without setae, on the posterior margin of the bar 

 joining them below ; anal ring narrow, with pores and 10 .setae each 



