60 A CONTRIBUTION TO THE KNOWLEDGE OF 



Scale. Scale of the female white, elongate, with the exuviae at one 

 end, the first exuvium bare, the second covered with secretion. The sec- 

 ond exuvium does not to the slightest extent enclose the adult female. 



Female. Length .8 mm., broadly oval, the posterior end widest. 

 Derm membranous throughout. Pygidium with the first pair of lobes 

 extremely small, consisting of mere prominences ; second pair much 

 larger, projecting but little from the margin but with their chitinized 

 bases prolonged somewhat into the pygidium. No plates, but the margin 

 with a few small prominences. Ducts short and broad, arranged as indi- 

 cated in the figure. Anal opening near the anterior end of the pygidium. 

 Circumgenital pores lacking. The second stage resembles the adult in all 

 respects. 



Notes : This species is certainly not a Leucaspis, but as its generic position 

 is quite uncertain I leave it for the present in that genus. The figure of the 

 pygidium given by Coleman is quite erroneous in indicating the presence of large 

 groups of pores on the dorsum. 



Genus LEPIDOSAPHES Shimer. 



Lepidosaphes concolor (Ckll.). 



Fig. 33. 



1893. Mytilaspis albus var. concolor Ckll., Psyche, 6:572. 



1903. Lepidosaphes concolor (Ckll.), Fernald, Catalogue Coccidae, p. 307. 



1903. Anoidomytilus concolor (Ckll.); Leonardi, Annali di Agr., 5:120. 



Type host and locality. From Atriplex sp., Las Cruces, N. Mex. 



Material examined. From Atriplex canescens, near Las Cruces, N. 

 Mex., and Fort Stockton, Texas; from Atriplex sp., near Lone Pine, 

 Inyo County, Cal. 



Scale. Scale of the female of the form typical of this genus, but 

 white or slightly greenish,' first exuvium naked, second exuvium covered 

 by secretion. I have not myself seen the male, but according to Cockerell 

 it is of the type common to the genus. 



Female. Length 1.2 mm. Derm membranous throughout, except 

 for the pygidium ; thorax not separated from the abdomen by a constric- 

 tion. Abdominal segments projecting but little or not at all at the mar- 

 gins; all the abdominal segments with a few small tubular ducts at the 

 margins but without gland spines. Dorsum of the abdomen without 

 ducts anterior to the pygidium. 



Pygidium with two pairs of well developed lobes. Median pair 

 quite close together, straight, their mesal margins parallel; with a 

 notch on both mesal and lateral margin at the tip. Second pair 



