Mr. T. D. A. Cockerell on some Mexican Coccide. 49 
ones) with knobbed digitules and tarsal hairs. The digitules 
of claw short, the knobbed hairs of tarsus long and stout, 
reaching considerably beyond the end of the digitules. The 
larva shows only four lobes (two pairs). Median ones large 
and prominent; next pair almost rudimentary. Beyond the 
second lobe are about four scaly bifid plates. 
This species has some superficial resemblance to A. ficus, 
but is actually very distinct. Structurally it seems rather 
nearly allied to A. smdlacis, Comstock. 
ae B. C, 
a , 
3 2°0 lie | ) 
en 
A.— Aspidiotus scutiformis ; lobes of 2. 
B.—Pulvinaria lutea, 2 ; foot. 
C.—Dactylopius mexicanus, two-thirds grown; diagram of markings. 
(4) Planchonia pustulans, Ckll., var. 
Vera Cruz, crowded on the stems of a plant not identified. 
Scales about 1 millim. diam. or rather more. These are 
smaller than Jamaican specimens, but I cannot find any 
characters that would separate them specifically. 
While examining these scales I saw what looked very much 
like an antenna—an organ not possessed by the species of 
Planchonia when adult. It took a moment’s consideration 
to realize that this appearance was no antenna, but a jointed 
hair from the host-plant! JI mention this lest some future 
observer should be thus deceived. 
(5) Dactylopius mexicanus, Sp. n. 
City of Mexico. 
@ (not adult). Body about 3 millim. long, broad, with 
subtruncate broad extremities ; sides with many long hairs, 
not covered with secretion, but their bases partly enveloped 
in white secretion. Caudal filaments about as long as lateral 
and without (or nearly without) secretion; caudal filaments 
about (or hardly) half length of body. Body above pale 
yellowish grey, with mealy white secretion rather sparsely 
Ann. & Mag. N. Hist. Ser. 6. Vol. xii. 
