4S Mr. T. D. A. Cockerell on some Mexican Coccide. 
through Mexico, five were new, equal to about 41 per cent. 
In the present state of our knowledge of the Coccide this is 
probably about the normal percentage of novelties obtainable 
on the mainland. When I went to Jamaica in July 1891 
very little was known of the West-Indian species, and of 
seventy-five now listed thirty-three were undescribed at that 
time, equal to 44 per cent. 
Descriptive Notes and List of Species. 
(1) Aspidiotus articulatus, Morgan. 
Vera Cruz, abundant on stems of rose; Soledad, on a tree. 
(2) Aspidiotus ficus, Ashmead. 
Vera Cruz, on an orange and on stem of rose-bush. 
(3) Aspidiotus scutiformis, sp. Nn. 
Soledad, on leaves of a tree somewhat resembling those 
of an Avocado pear, with A. articulatus, Aleurodes sp., and 
black ants. 
9. Scale very flat, circular or suboval, with the (covered) 
exuvie placed a little to one side. Diameter of scale about 
21 millim. Colour dull brown-black, with the margin 
whitish ; exuvie large, pale orange, more or less shiny, not 
nipple-like. One scale shows ten parasite-holes, five on the 
exuvie and five on the scale; another shows twelve holes, 
six on the exuvie and six on the scale. Twelve seems a 
large number of parasites to have emerged from a single 
Aspidiotus. 
@. Broad pyriform. General colour pale orange; lobes 
yellow. No grouped glands seen. ‘here are three pairs of 
lobes, the middle pair distinct and rounded, not close together, 
being separated by a pair of spine-like plates ; second and 
third pairs of lobes flattened and elongate, the second pair 
crenate. A pair of spine-like plates between the first and 
second and second and third pairs, and also beyond the third 
pair. Beyond third pair of lobes the margin is wavy, due to 
the presence of six broad rudimentary lobes, with more or less 
rudimentary spine-like plates between them. The last of 
these lobes is a little more produced than the others. Beyond 
this the margin is straight, with single spines or hairs at 
moderately long intervals. Between the lobes are very long 
narrow saccular incisions. 
Larva broad, oval, yellowish. Legs (at least the hind 
