39 
formula 0, 3, 1, 4 (2, 5); 4 sometimes much more slender than 3. 
Anogenital ring with six distinct hairs. Claw with very small digitules. 
Habitat. — San Ignacio, Sonora, Mexico, on " gecota," Hymenoeloa 
monogyra. (Townsend, October 4, 1894 ; Div. Ent. Dept. Agr. No. 0448.) 
The affinities of this line species are clearly with 0. annas Okll., which 
it much resemble's. These forms are of the type of 0. urticw Linn, as 
regards the formation of the laminae or lamellae of white secretion. 
The following form, closely allied to P. yuccas 1 Coq. (I). mexicanus 
Ckll.), has just been received from Antigua: 
Phenaeoccus yuccae, n. var barberi Ckll. 
Female. — In spirits, looks like a Monophlebus, the cottony secretion 
having been lost; whitish, nude, shiny, segmentation distinct; length 
about 5, breadth about 2j mm.; legs and antenna 1 pale reddish brown 
(very much paler than those of P. yucca'), shiny. Anogenital ring with 
six stout bristles. Posterior lobes rounded, low, inconspicuous, with a 
few hairs and numerous short spines, after the maimer of Daetylopiux. 
Antenna' 9-jointed, the joints subequal, very distinct, bearing whorls 
of hairs; i) about one-third longer than 8; 7 a little longer than 8; 2, 
4, 5, 6, and 7 practically equal, 2 perhaps slightly the shortest; 3 a little 
longer than 4; 1 about as long as 2; formula 9, 3 (1, 2, 4, 5, 0, 7) 8. Legs 
large, ordinary, tibia somewhat longer than femur; tibia and femur each 
with two rows of stiff bristles, tibial bristles about twelve in a row, 
femoral about seven. Trochanter with five bristles and one long hair. 
Tarsus extremely short; excluding claw, it is of the same length as 
last joint of antenna. Claw large, curved, with a small but very dis- 
tinct denticle on its inner side. Tarsal digitules filiform, with minute 
but distinct knobs; digitules of claw filiform. Sides of segments with 
round patches of small spines. 
Habitat. — Collected by Mr. 0. A. Barber, in Antigua, on AUamanria 
and T/umbergia grandi flora, and also observed by him on Colcus and G ro- 
ton growing near the Thunbergia. Mr. Barber also sent me numerous 
specimens which he found on a plant not identified, at St. Kitts. 
Although the material sent was abundant, it was all in alcohol and 
included no males; hence I am unable to determine whether we have- 
to do with a distinct species or not. The distinctions from yuccas, so 
far as can be made out from the alcoholic material, are very slight, 
although barberi can be easily separated by the x^ale legs and antenna'. 
These forms are not typical Pkenaeoccm {Pseudococcus Auctt.) by any 
means, and will doubtless have to be eventually placed in a distinct 
genus or subgenus. I hesitate to make such a change now, because the 
whole dactylopiiue series stands in need of generic revision, and it will 
be better to let the matter rest until this work can be taken in hand. 
1 1 have received alcoholic specimens of this insect from Mr. Urich, collected in 
Trinidad. They show joint 3 of antennae rather longer than 9 ; otherwise they agree 
excellently with the barberi from Antigua. Mr. Urich writes that he found them in 
St. Anns, on orange trees, hut they were not common. 
