82 Mytilaspls. 



as long as body; terminal joint with a single knobbed hair at apex {fig. 8). 

 Foot {fii^. 7) with three knobbed hairs— one on claw and two on tarsus; claw 

 long and slender; tarsus as long as tibia. Length about 075 mm., of which 

 the genital spike occupies nearly one-fourth. 



Eggs white, disposed irregularly beneath the scale {fig. 5). 



Habitat on the under surface of leaves of Cocculus 7nacrocarpus. Kandy 

 (July). The presence of the scale may be detected by a yellowish discolouration 

 of the leaf. 



This species, in the structural details of the female insect, is nearly allied to 

 M. ponionoi:, Bouchc, which I have seen in Ceylon on the rind of imported 

 Tasmanian apples. The females of that species have the abdominal segments 

 similarly chitinised. M. coccuU may be distinguished by the longer and narrow 

 puparium, with its greenish undivided ventral scale. This species also ap- 

 proaches AT. a'tncohi (Packard), with which I at first classed it ; but I now 

 belic\e it to be distinct. The longer, straighter, and narrower puparium, the 

 frontal fold on the female, and the more highly chitinised abdominal segments, 

 will assist in the determination of the species. From M. Glovcrii it can be 

 distinguished by the undivided ventral scale and the irregular disposition of 

 the eggs. These various points of difference, though severally small, collectively 

 tend to justify the separation of the species. 



EXPLANATION OF PLATE XXL 



Mytilaspis cocculi. 



AH figures, except No. i, more or less enlarged. 



Fig. I. Part of leaf of Cocculus, with insects in situ, nat. size. 



2. l\Lale puparium, from below. 



3. „ „ from above. 



4. Female puparium, from above. 



5. „ „ from below. 



6. Adult male, dorsal view. 



7. „ „ foot. 



8. „ „ terminal joint of antenna. 

 q. Adult female, ventral view. 



10. „ „ pygidium. 



