OBSERVATIONS ON SCALE-INSECTS (COCCIDAE) — IV. 7 



and continuous in front, so that they appear concentric with the median row ; 

 the marginal row almost hidden by the submarginal row. A number of long hairs 

 project beyond the waxen covering, especially at the margin in front. Posterior 

 extremity markedly narrowed and with a single long stout waxen appendage or 

 tail-like process. Integument, antennae and legs of dead examples pitchy-black. 

 Antennae of eleven segments and of the usual form found in the females of this 

 genus. Legs normal. Marginal hairs very long, the longest being a little more 

 than one-third the total length of the body ; these hairs are much more numerous 

 in front and also posteriorly ; at the sides of the body they are arranged in rather 

 widely separated groups. Integument densely studded with relatively large 

 circular spinnerets, interspersed with fine short hairs, the latter much more 

 numerous ventrally. Length, inclusive of waxen appendages, 7-8 mm. ; length, 

 exclusive of caudal appendage, 5 mm. 



Female, second stage. Dorsum with five rows of white waxen appendages ; 

 median row coalescing ; submedian and marginal rows much shorter than in the 

 adult female ; caudal process similar to that in the adult. Antennae of nine 

 segments ; marginal hairs and spinnerets as in the adult, but the former are 

 relatively longer, being about one-half the total length of the body. 



Uganda: Entebbe, on crotons, 13. viii. 12 (C. C. Gowdey). 

 The somewhat pyriform outline of the female, with the long stout caudal 

 appendage, should readily serve to distinguish this insect from any of its allies. 



Palaeococcus cajani, sp. nov. 



Female, adult. Ovate and highly convex. Waxy covering pure white, the 

 arrangement very like that of Icerya euphorbiae, Brain,* but more or less distinct 

 processes are traceable ; these are arranged as follows : margin with 13-14 short 

 and bluntly rounded processes packed closely together and coalescing behind ; 

 immediately above them is a well defined constriction, and over this a ridge with 

 similar but more irregular processes ; cephalic extremity with an irregular cluster 

 of blunt processes ; the rest of the dorsum denuded by pressure in packing. Colour 

 of integument black. A number of fine hairs protrude through the waxen covering. 

 No ovisac, but a little flocculent secretion beneath the body. Length of dried 

 example, 3 - 9 mm. 



When first placed in chloroform the marginal appendages show up very distinctly 

 and the outstanding hairs are regularly arranged so that a pair of them (one dorsal, 

 the other ventral) form the dividing line between the waxen processes. Colour 

 in this medium, dull orange-crimson. Antennae (fig. 3, a) of nine segments ; the 

 terminal equal in length to the second and third together ; all, with the exception 

 of the last two, broader than long ; hairs of two kinds : a relatively short form, 

 which is somewhat spinose, and a very long slender one ; the longest on the last 

 three segments, one of which is twice the length of the distal segment. The 

 antenna on the opposite side has the articulations of the third and fourth segments 

 very faintly indicated. Legs with the femora very broad ; tibiae and tarsi with 

 slender hairs of varying lengths. Derm scantily clothed with hairs ; pores (fig. 3, b) 



* Trans. R. Soc. S. Africa, V, p. 107, pi. xxii, Bg. 48. 



