55 



the secreted portion, and in having the median lobes broader in 

 proportion to their length and more finely and less distinctly crenate. 

 See Plate 9, Fig. 6. 



REMARKS. 



On an unknown plant from Aboekuta, Egbaland, West Africa. 

 Collected by Dr. Henry Strachan and sent to Prof. Cockerell who 

 turned the specimens over to me. 



HEMICHIONASPIS SCROBICULARUM. 



Chionaspis scrobicularum Green, Coccidae of Ceylon, Part II., p. 121 

 (1899). 



EARLY STAGES. "Eggs and larvae pale yellow." (Green). 



SCALE OF FEMALE. Length, i mm.; white, opaque. Exuviae 

 pale yellowish. 



FEMALE. Usually one pair of lobes present (Plate 9, Fig. 2.), 

 large, very prominent, crenate or serrate on the outer edges ; num- 

 ber of crenations or teeth, five or six. Occasionally the second pair 

 of lobes is represented by the merest rudiments of lobes. The 

 gland-spines are arranged as follows, i, i, 1,1, 1-2. They are 

 quite long and slender. In addition to the ordinary gland-spines are 

 other spines almost precisely like them in shape and appearance, 

 but not supplied with the long tubular gland-ducts leading through 

 them. These are prolongations of the prominences on which are 

 located the marginal gland-orifices. See Plate 9, Fig. 4. The dorsal 

 gland-orifices are numerous and conspicuous. First and second rows 

 absent. Third row with 3 8 orifices in the anterior and 7 9 in 

 the posterior group. Fourth row with 6 9 orifices in the anterior 

 and 6 8 in the posterior group. In addition to these gland-orifices 

 are numerous others which are much smaller and less conspicuous. 

 These seem to have no very definite arrangement but are most 

 numerous in the space between the lobes and the circumgenital 

 gland-orifices. Median group of circumgenital gland-orifices number- 

 ing 9 14 ; anterior laterals, 22 26 ; posterior laterals, 16 18. 



