Mr. T. D. A. Cockerell on some Mexican Coccidae. 49 



ones) witli 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 sliows 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.Jicus, 

 but is actually very distinct. Structurally it seems rather 

 nearly allied to A. smilacis, Comstock. 



A. 



B. 



C. 



' ^^/^?^ 



A. — Aspidiofus scut if or mis ; lobes of 5 • 



B. — Pulvinaria lutea, J ; foot. 



C — Dactylopius viexicanus, two-tbirds grown; 



diagram of markings. 



(4) Planchonia pustulans , Ckll., var. 



Vera Cruz, crowded on the stems of a plant not identified. 



Scales about 1 millira. 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 a])pearance was no antenna, but a jointed 

 hair from the host-plant ! I 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. Scr. 6. Vol. xii. 4 



