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



1897, p. 590), who states "(5). Erium, Crawford, ins. This 

 name will stand for the subgenus of Dactylopins without lateral 



cottony tufts, . The type is D. globosus Mask.," and the genus 



must therefore be credited to him and from that date. 



So far as is known to the writer, there are at present two de- 

 scribed species of this genus from South America, one, Erium 

 parcispinosMH (Leon.) (Eriococcus parcispinosus Leon. Bol. 

 Lab. Zool. gen. e agr. R. Scuola sup. d'Agr. Portici, vol. V, 1911, 

 248-9, fig. VII), and the other E. annaiuni (Hemp.) (Eriococcus 

 armatus Hempel, Rev. Mus. Paulista, IV, 1900, p. 38-3) both 

 incorrectly described originally as Eriococcus. The proper 

 position of E. parcispinosiim (Leon.) does not appear to have 

 been noted heretofore. Assuming that the published descriptions 

 and figures of the two species are correct, they may easily be 

 separated by an examination of the antennae, E. parcispinosum 

 having 8-segmented antennae, while those of E. arniatitni are 

 7-segmented. 



Erium armatum (Hemp.) is represented in the collection from 

 Sr. Jorgensen by material from Mendoza, Argentina, host and 

 date of collection not given, under collection number oN/>. 



Subfam. TACHARDIINAE. 



Genus Tachardia R. Blanch. 



Tachardia lycii Leon. 



The specimens of this species in the collection at hand agree 

 very well with Leonardos description and figures of Tachardia 

 lycii (Bol. Lab. Zool. gen. e agr. R. Scuola sup. d'Agr. Portici, vol. 

 V, 1911, p. 250) with the single exception that they average 

 larger than the measurements given by him. While it is of course 

 impossible to make any definite statement, it appears to the 

 writer, after a careful study of Leonardos description of /". 

 cordaliae (Ibid., p. 258), that it is very doubtfully distinct from the 

 T. lycii described on the preceding pages. 



Two lots of material have been examined, both from Mendoza, 

 Argentine under collection numbers .'>// and ;>9r, then- being no 

 additional data. 



Subfamily COCCINAE. 



In addition to the known and apparently new species of this 

 subfamily which are treated in their proper systematic sequence, 

 there were four lots of material which could not be determined 

 specifically on account of the scarcity of specimens, but these are 

 included with generic or tentative determinations for the sake 

 of the greatest possible completeness in the report, as follows: 



Pulvinaria sp. This species, from Misiones, Argentina, Nov. 

 1910, under collection number KiXa, is probably new, but there 



