400 E. W. DOANE AND G. F. FEERIS. 



and third pairs of lobes with two lobules which are nearly of the same shape and size. 



Lobules of the third pair of lobes short, broad, lateral margins finely crenate. Between 



the first and second lobes is a gland- bearing prominence, which in size and shape 



closely resembles the first lobule of the second lobe ; between the second and third 



lobes is a similar but broader lobule-like prominence. There is a conspicuous gland 



spine (plate) between the first and second lobes, one between the second and third 



lobes, and one just beyond the third lobe. Near the anterior margin of the pygidium 



is a group of four gland spines and about half-way between these and the third pair of 



lobes are two more gland spines situated close together. The marginal spines of the 



dorsal side are near the lateral angles of the bases of the first and third pair of lobes 



and near the incision of the second pair of lobes. Circumgenital gland orifices in five 



groups, the cephalic group with four to six, the anterior lateral groups with about 



fifteen, the posterior-lateral groups with about thirty. The anterior and posterior 



lateral groups are, in some specimens, almost confluent. Dorsal gland orifices in 



three rows, the two anterior rows each consisting of four or five glands, the posterior 



row divided into two groups, of which the anterior contains two and the posterior 



four or five orifices. 



On a species of palm, concealed beneath the woolly covering of the stems. 



Hemichionaspis aspidistrae (Sign.). Very abundant upon several different hosts, 

 including palm, banana and orange. There is a wide range of variation among our 

 specimens, so much, in fact, that it seems doubtful if all should be referred to the 

 same species. However the extreme forms are apparently all connected to the others 

 by intermediate stages. A thorough study should be made of the group, 

 using abundant material from various localities and host plants. 



Aspidiotus cydoniae, Comst. On orange and an unidentified plant. 



Aspidiotus pangoensis, sp. n. 



Female scale circular or sub-circular, flat and rather thin and chaffy, of a brownish 

 grey colour. Exuviae central, yellow. Diameter 2 mm. Male scale not identified. 



Adult female pyriform or sub-circular, with the pygidium usually somewhat re- 

 tracted into the abdomen. Body-wall, especially the margins, thickly chitinized 

 and brown in colour, except for the pygidium which is clear. Length 1*2 mm. 



Three well developed pairs of lobes present. Median pair heavily chitinized and 

 conspicuous, rather slender, close together and with their mesal and lateral margins 

 nearly parallel. From the base of each a short club-shaped thickening extends into 

 the pygidium. Distal margins rounded, with a single slight notch. Second pair of 

 lobes as long as or even longer than the first, of the same width and shape, but being 

 much less heavily chitinized they are less conspicuous. Third pair about half the 

 size of the second and of nearly the same shape. The marginal spines are arranged 

 as follows : On the dorsal side there is one at the outer angle of the base of 

 each lobe ; and two, quite widely separated, beyond the third lobe ; on the 

 ventral side there is one at the outer angle of the base of the second and third 

 lobes and two beyond the third lobe. The plates are as follows : Two with fringed 

 tips between the median lobes, and two similar but wider ones between the first and 

 second lobes ; three with deeply cleft tips between the second and third lobes and 

 five or six beyond the third pair of lobes, the first three of these being deeply divided, 

 the remainder simple. 



