18 A CONTRIBUTION TO THE KNOWLEDGE OF 



Eriococcus bahiae Ehrh. 



Type locality. From Eriophyllum (= Bahia) confertiflorum, Ste- 

 vens Creek, Santa Clara County, Cal. 



Material examined. Topotypes and specimens from Gutierrezia sp. 

 on the mesa west of Las Cruces, N. Mex. 



Eriococcus gillettei Tins. 



Type host and locality. From Juniperus virginiana (now called 

 /. scopulorum), Salida, Colo. 



Material examined. The types and specimens from Juniperus pach- 

 yphloea a few miles west of Datil, N. Mex. 



Eriococcus tinsleyi Ckll. 



Type host and locality. From Atriplex canescens, Mesilla Park, 

 N. Mex. 



Material examined. The types and specimens* from Atriplex sp. 

 Springerville, N. Mex. 



Genus FONSCOLOMBIA Licht. 

 Fonscolombia yuccae n. sp. 

 Fig. 5. 



Type host and locality. From a broad-leaved Yucca near the head of 

 Blue Canyon, west of Socorro, N. Mex. 



Habit. Occurring at the base of the leaves ; covered with more or 

 less white, woolly secfetion ; insect, when denuded of secretion, bright 

 red. 



Morphological characteristics. Adult female (flattened on slide) 

 1.2 mm. long, elongate oval in form (Fig. 5E). Legs and antennae well 

 developed, the latter seven-segmented, of the usual Eriococcine type 

 (Fig. 5A) ; claw without a denticle beneath, Dorsum sparingly beset 

 with small, slender spines (Fig. 5G). Derm with numerous small, tubu- 

 lar ducts (Fig. 5C) of the usual Eriococcine type, ventrally with numerous 

 pentagonal pores (Fig. 5E) in the region of the vaginal opening and 

 with a nearly complete circle of such pores about each of the spiracles 

 (Fig. 5D). Anal lobes weakly developed, each bearing one long and two 

 or three very short setae. Anal ring on the ventral side, small, heavily 

 chitinized, bearing six small setae (Fig. 5H). 



Immature female with shorter and stouter antennae (Fig. 5B) than 

 the adult ; without pentagonal pores on the venter ; with the dorsum beset 



