88 



REPORT UPON A COLLECTION OF 



anal cleft, where the spines are replaced by short setae. The spines are 

 accompanied by numerous tubular ducts of the type common to the genus 

 (Fig. 11 A), which are also quite abundant over the chitinized posterior 

 portion of the abdomen, and within this zone is another of small, cylin- 

 drical ducts. Anal plate (Fig. 11C) entire, tapering and sometimes quite 

 acute at the apex and bearing several setae as indicated in the figure. 

 Anal ring cephalad of the anterior margin of the plate. Ventral furrow 

 almost closed. 



Notes: In many respects this species most closely resembles Aclerda 

 distorta Green, but in the latter species the zone of tubercle-like spines is con- 

 tinuous to the margin of the anal cleft. 



Genus PULVINARIA Targ. 



Pulvinaria peninsularis n. sp. 



Fig. 12. 



Type from undetermined shrub at San Bartolo. Also from undeter- 

 mined shrub at La Paz, Philibertia tomentella at San Jose del Cabp, 

 Nesaea salicifolia between Cabo San Lucas and Pescadero, Karwinskia 

 humboldtiana at Todos Santos, orange at San Bartolo, and Celosia flori- 

 bunda at Miraflores. 



Fig. 12. Pulvinaria peninsularis n. sp. : A, antenna ; B, tarsus ; C, anal plates ; 

 D, types of marginal spines; E, spines of stigmatic depression. 



Habit- Adult female secreting a rather loose and quite slender ovisac 

 from 5-8 mm. long, the insect becoming much shriveled at maturity. 



Morphological characteristics. Length (on slide) 2-3 mm. Derm 

 membranous throughout. Stigmatic depressions (Fig. 12E) with two 



