170 Robert Newstead: 
Habitat: D. Ost-Afrika, Amani, auf Urwaldpflanze, zum Teil mit Pilz. Aug. 
1902. Prof. A. Zimmermann S. (Nr. 16). 
This inseet is nearly related to certain Indian species (C. Aava Green and (. 
litzeae Green) but it is distinguished chiefly by the absence of long spinose squames 
on the pygidium, and the broader duplex lobes. 
Chionaspis nudata n. sp. (Newstead). 
Puparium of female thick, opaque, dull white; mytiliform, highly convex, 
coarsely and irregularly striate; evaviae yellow. 
Length 2,50—2,75 mm. 
Puparium of male white, flat, and non-carinated. 
Female adult, rather elongate, widest in the region of the free abdominal 
segments. Pygidium not very clearly defined, the cutiecle being soft and flaccidlike 
that of the other portions of the body; dorsal pores forming two distinet broad 
bands; these are succeeded by two similar bands on the two succeeding abdominal 
segments; there are also similar groups of pores on the remaining segments but 
Fig. 10 a—c. Chionaspis nudata. 
they are fewer in number and gradually diminish as they approach the thoracic area. 
Circumgenital glands in five narrowly separated groups, formula of one example: 
26 
19—22 
32—44. 
The lower lateral groups are the largest. 
Margin of pygidium (fig. 10a) simple; the median pair of lobes rudimentary, 
the rest either obsolete or also quite rudimentary; there is a single rudimentary 
squama immediately lateral of the median lobes, and in some examples one or two 
small ones towards the base of the pygidium; spines minute, but there are two 
stronger ones on the dorsal surface within the margin, just anterior to each of the 
median lobes. Anal orifice near the anterior group of eircumgenital glands. Genital 
orifice below the former. Antennae (fig. 1Obb) with two spines arising from between 
a bivalve-like outer process or shield of chitine, one of the val es being bluntly 
bidentate; this is a very remarkable structure and no two examples appear alike 
owing evidently to the different positions which they assume by the pressure of the 
covering-glass. All the stigmata (fig. 10c) surrounded by a more or less eicular fold of 
the integument: parastigmatic glanıls compact, forming a more or less eresentie group. 
