OBSERVATIONS ON SCALE-INSECTS (COCCIDAE) — IV. 5 



pores (fig. 2, c) circular ; some apparently with compound openings others with a tri- 

 angular, quadrangular or circular openings. Length, 15 5-21 mm. ; width, 12-15 

 mm. ; height, 6-9 mm. 



Female, second stage. Ovate, sometimes slightly narrowed anteriorly ; posterior 

 half of margin rather broadly produced or flattened ; dorsum convex. Marginal 

 dentate processes similar to those in the adult but smaller. Dorsum without dentate 

 processes and, with the exception of the rubbed portions, covered with granular 

 secretion. Dorsal glandular pores circular, with four openings. Glandular pores 

 at the angles of the marsupial opening (fig. 2, d) of three types ; a relatively small 

 form of somewhat variable shape, a large form with six openings, and a roughly 

 quadrate form with four openings. These glandular orifices in the old adults become 

 more or less obscure owing to the density of the chitin. 



Nyasaland : Mt. Mlanje, on " Mwange " tree, x. 1913 {S. A. Neave). 



This Coccid differs from A. pertinax, Newst., in being less convex (especially in 

 the abdominal region), and in the larger size and arrangement of the dorsal thoracic 

 processes. 



Aspidoproctus verrucosus, sp. nov. 



Female, adult Subhemispherical, produced in front, flat beneath ; secretionary 

 operculum complete. Integument blackish ; sparsely clothed with dusky golden 

 pubescence, and punctate between the patches of secretion. Margin with short, 

 tooth-like, contiguous appendages, dusky white in colour, with here and there faint 

 traces of yellow, tips more or less pure white. Frons with two converging rows of 

 similar, but smaller and confluent, processes. Above the last-named in the middle 

 line are three widely separated, transverse rows of very small tooth-like appendages 

 surrounded by dusky granular secretion. Leading from the third group towards 

 the anal margin is a narrowly ovate series of scurfy patches and surrounding them 

 an almost complete circle of similar patches of secretion. Between the various 

 tooth-like processes are other irregular patches of secretion, which collectively give 

 the insect a decidely warty or more or less mottled appearance. Derm rather densely 

 clothed with relatively long spines, some of which are truncated, possibly owing to 

 injury. The special gland-tracts at the margin of the abdominal area surrounded 

 by a dense wall of spines taking a quadrangular or rectangular form ; within these 

 are one or two small groups of circular glands. There are at least three other types 

 of glands on the venter, including a large quoit- shaped one of slightly varying dimen- 

 sions, these being most conspicuous in the region of legs ii. and iii. Length, 8 - 5 ; 

 width, 7*3 ; height, 5*5 mm. 



Uganda : Ngamba Is., on trunk of a fig tree, 16. v. 14 (Dr. G. D. H. Carpenter). 



In its general shape this Coccid resembles a very small example of Aspidoproctus 

 pertinax, Newst. ; but it is otherwise markedly distinct. The mouth-parts and 

 antennae were absent in all the specimens, and were evidently detached when removing 

 the insects from the tree. 



Palaeococcus tricolor, sp. nov. 



Female, adult. Ovate, narrowed in front, covered with short bright yellow or 

 white waxen processes, which are arranged in seven more or less well-defined rows : 



