PROC. ENT. SOC. WASH., VOL. 21, XO. 4, APR., 1919 69 



bb . Dorsal body spines large, numerous and conspicuous, not noticeably 



differentiated in size from the body marginal spines. 



d . Pores of hind coxae irregular in size and shape, grouped into 



clusters, each cluster surrounded by a more or less distinct chiti- 



nous thickening; a relatively larger species. . . .perplexus Hemp. 



dd . Hind coxal pores approximately uniform and circular, scattered, 



not grouped as in the preceding species. 



e . Hind tibiae with at most a cluster of only three or four more 

 or less fused pores above, just before the apex ; hind coxal 

 pores relatively small, rarely if ever exceeding 14-28 in 



number braziliensis Ckll. 



ee . Hind tibiae with a group of about 6 or more large con- 

 spicuous pores above just before the apex; hind coxal pores 

 large and conspicuous, usually 40 or more in number 



jorgenseni n. sp . 



Eriococcus araucariae Mask, and E. perplexus Hempel have 

 thus far been reported only from Brazil. 



Eriococcus mendozae, n. sp. 

 (PI. 4, fig. 2; pi. 5, fig. 1, A-H.) 



Sac of Female. Occurring on the twigs of the host, most abundantly at 

 points where a cluster of tiny shoots has branched off; light buff in color 

 surface finely and densely matted, thin, firm in texture and rather brittle 

 in the dried specimens, with a rather large posterior subdorsal opening; 

 about 4 mm. in maximum length, normally oval in shape, rather convex, 

 and with faint or indistinct transverse grooves marking the abdominal seg- 

 mentation; almost invariably distorted and twisted due to crowding or to 

 the position on the host; younger sacs lighter and more elongate oval. 



Adult Female. -Maximum length of specimens mounted on slide 2.5 mm., 

 maximum width of same 1.75 mm., plump, broad oval, evidently strongly 

 convex dorsally in life; color of dried and shriveled body dark reddish; giving 

 off dark wine color stain when boiled in KOH; antennae 7-segmented, the 

 diameter of corresponding segments varying somewhat in different individuals, 

 measurements in microns as follows: 



