palmer: coccid genus parlatoria. 135 



palm, and the following varieties of citrus : Orange, lemon, and 

 mandarin. The habitat is Europe, Algeria, Hawaiian islands, 

 Formosa, China, West Australia, and in the United States on 

 imported fruit. 



This description has been made from the study of ten mounted 

 specimens from lemon, mandarin, and a citrus plant whose 

 variety is not given, with descriptions by Signoret (1868), Ber- 

 lese (1896), Newstead (1901) and Comstock (1883) at hand 

 and used for reference. 



PARLATORIA BLANCHARDI Targ. 



Plate XXIV, figure 2. 



This species has four groups of circumgenital glands. There 

 are three pairs of well-developed lobes. The rudimentary fourth 

 lobe is absent. The form of the lobes is not trilobate, as in 

 zizyphus, but broadly rounded at the ends, without notches on 

 either side. The marginal-gland orifices are of the same form 

 as in zizyphus, but the chitinized disks are not visible. The 

 plates have the same arrangements as those in zizyphus, but are 

 narrower in shape. Those along the sides laterad of the third 

 lobe are much longer and have fewer incisions than those in 

 zizyphus. The median dorsal gland is present. Laterad of this 

 median dorsal gland and cephalad of the second marginal-gland 

 orifice is a group of three dorsal glands. Cephalad of the third 

 marginal-gland orifice and the third lobe is another group of 

 three or four dorsal glands. The chitinized disks are not dis- 

 tinctly visible, or are seen very close to the orifices, the glands 

 being probably situated almost at right angles to the body wall, 

 so that the chitinized disks are hidden below the orifices. 



Food-plant is the date-palm. Habitat : Australia, Algeria, 

 and the Sahara. Described from nine mounted specimens. 



PARLATORIA VICTRIX Ckll. 



Plate XXIV, figure 3. 



Victrix agrees in every particular with blanchardi. The food- 

 plant is also the same. They diff"er only in habitat as given, 

 victrix being found in Arizona, and blanchardi in Algeria, Sa- 

 hara, and Australia; but Marlatt, in his manuscript of 1900, 

 says that Cockerell's victrix originally came from the same lo- 

 cality as blanchardi. Victrix has been determined as synony- 



