74 PROC. ENT. SOC. WASH., VOL. 21, NO. 4, APR., 1919 



antennae and legs both rather small, the latter with the tibia and tarsus 

 about equal in length, the hind coxae with numerous rather large, approx- 

 imately circular pores, the number varying from 26 to 60, with the average 

 to each coxa around 40; and lobes small, rather stout, round-pointed, with 

 three large stout dorsal spines, the longest sometimes as much as 53 /x long, 

 and apical, a subapical and basal ventral hair, apical hair 230-270 yu ="=, sub- 

 apical 120 ju , longest anal ring hair about 125 ju == ; anal ring with 8 hairs, 

 the ring itself typical of the genus; body dorsally with numerous large, slightly 

 curved, strongly tapering spines, slender tipped, rounded at apex, these not 

 noticeably differentiated in size or position from the similar marginal spines; 

 body ventrally with a transverse row of small hairs, varying in length, on each 

 of at least the abdominal segments; ventral multiocular gland pores rather 

 numerous; dorsal cup-shaped gland bases rather broad and shallow, slightly 

 asymmetrical. 



Male Piiparium. Occurring on the leaves and twigs of the host; about 

 1.75 mm. long, elongate flat beneath, convex above, flattened caudally, 

 with a wide horizontal semicircular opening at the caudal apex; delicate in 

 texture, thin but opaque, w'hitish, surface rather fuzzy. 



This species has been described from 13 specimens mounted on 

 slides and a number of specimens in position on the host plant, 

 sent from Bomplana, Misiones, Argentina, December, 1910, 

 under collection number 854a, some material from "Myrtaccous 

 plant, ' ' some on ' 'Myricia apiculate' ' and some on an unstated host. 



The types are in the U. S. National Collection of Coccidae. 



Genus Erium Cockerell. 



This genus is credited to Crawford in the Catalogue of the 

 Goccidae of the World, 1903, p. 112 by Mrs. Fernald, and to 

 Maskell by Ferris in The California Species of Mealy Bugs, 1918, 

 p. 7.i. An examination of the first bibliographical reference 

 given in the Catalogue, that to Maskell (Trans. N. Z. Inst. 

 XXIV, 1891, p. 35) shows that Maskell describes the type species 

 of the genus, globosus Mask, as a P seudococcus , and merely states 

 that in the Crawford collection, from which he obtained his 

 specimens of the species, it had been labeled Erium globositni. 

 Maskell does not make any statement which could be construed 

 as establishing the name Erium as even a subdivision of the genus 

 Pseudococcus, and consequently the first use of this name in 

 literature for a group of coccids is by Cockerell (Am. Nat. XXXI, 



