34 PROCEEDINGS OF THE NATIONAL MUSEUM vol.71 



species whose test possesses such a tube should be segregated into 

 another genus. The genotype species /S. fagi (Maskeli) has already 

 been redescribed (reference cited above), and a redescription, with 

 figures, is given below for Maskeli 's other included species. 



SOLENOCOCCUS COROKIAE (Maskeli) 



Plate 25, figs. 1-11 ; Plate 26, figs. 1-10 ; Plate 29, fig. 6 



Reference. — Fernald, Cat. Cocc. World, 1903, p. 58. 



The Maskeli collection includes three slides of this species, one 

 of " adult female, on CoroJcia cotoneaster. Sept., 1889," one of 

 " female, 2nd stage, Apr., 1890," and one of " male, Feb. T, 1890." 

 There is also a small quantity of unmounted material under No. 110. 



Adult female. — See Maskeli description for information regarding 

 the character of the test inclosing the insect; body, as mounted, 

 stout oval to nearly globular, somewhat narrowed posteriorly and 

 with apex of abdomen protruding slightly, length about 1.3 mm., 

 width 1.1 mm.; derm membranous, excepting only the inner mar- 

 gins of the anal lobes; antennae short, stout, obscurely 2-segmented, 

 tubercles bearing five or six setae at tip but not invaginated at 

 apex; legs wanting; spiracles with slender bar and with a cluster 

 of quinquelocular pores at one side of opening, these continued as 

 an irregular row to the margin, those opposite the anterior spiracle 

 terminating in a close cluster, the row totaling about 80, those 

 opposite posterior spiracle forming two diverging rows terminating 

 in tAvo distinct, well-separated clusters at the margin; beak short, 

 stout conical, incompletely 2-segmented; margin between dorsal 

 and ventral surfaces not definitely indicated, but with widely sep- 

 arated slender setae in the lateral region possibly indicating the 

 margin; spiracular spines wanting; with an occasional minute seta 

 dorsally, and with these longer and larger over the ventral surface; 

 8-shaped pores abundant dorsally, varying considerably in size as 

 indicated in figure, the larger pores more or less distinctly aggre- 

 gated near the median line and along the margin, and 8-shaped 

 pores also present ventrally on the posterior portion of the body 

 in transverse rows accompanying the multilocular disk pores, re- 

 maining anterior portion of ventral surface with numerous and 

 uniformly scattered, smaller, modified 8-shaped pores ; tubular ducts 

 numerous dorsally but not conspicuous, also occurring to some extent 

 ventrally; quinquelocular pores in bands from spiracles to margin 

 as already described, and, in addition, in a marginal band from the 

 posterior spiracular band to the antenna on each side, multilocular 

 disk pores in five long transverse rows in the ventral abdominal 

 region, size varying somewhat, loculi varying from 6 to 10; with 

 minute, simple chitinized circles, possibly pores, sparsely present 

 over both surfaces; cribriform plates present, in two clusters of 



