Maskell. — On Coccidse. 319^ 



sufficient to remove it from that genus ; and I will add the 

 anal tubercles, which are more like those of a Dactylopid 

 than those of an Acanthococcid. It does not entirely agree 

 with Bipersia, on account of the shortness of the last an- 

 tennal joint in the adult female ; but B. fraxini, Newstead, 

 has to some extent a similar character. The peculiar feet 

 are unlike anything known to me in any genus ; and, on 

 the whole, the species is so abnormal that many entomo- 

 logists would erect a new genus for it. However, I shall 

 now place it in Bipersia. 



Genus Coccus. 



Coccus acacise, sp. nov. Plate XXI., fig. 4. 



Adult female dark-red, with sometimes a lighter and yel- 

 lowish tinge ; semiglobular, segmented, often much wrinkled ; 

 diameter, about -^^^n. When boiled in potash it produces a 

 small quantity of dark pigment. Antennge of six joints, the 

 sixth the longest, the third next, the rest short and sub- 

 equal ; on the sixth, which is fusiform, there are a few short 

 hairs. Peet rather long ; tibia only slightly longer than the 

 tarsus; all four digitules are fine hairs. Anal tubercles very 

 small and inconspicuous ; anogenital ring small, simple, hair- 

 less. Margin without spines or hairs ; epidermis exhibiting 

 only very few circular small spinnerets. 



Second stage not observed. 



Larva red, flattish, elliptical, active ; length, about ^in. 

 Antennae of six short joints, as in the adult. Feet normal. 

 Anal tubercles prominent but small, bearing a few short 

 spines ; seise moderate. 



Male unknown. 



Hab. In Western Australia, on Acacia, sp. (a plant with 

 very small leaves and many slender thorns). Mr. Lea sent 

 me specimens from Perth. 



This is the first species of the genus Coccus which I have 

 yet reported. Indeed, there are very few known. The ab- 

 sence of anal tubercles and of hairs on the anogenital ring is 

 a distinguishing character. 



Coccus cacti, auct., var. ceylonicus, Green. Ind. Mus. Notes, 

 vol. iv., No. 1. 



I have received this variety from Dr. Alcock, of Calcutta ; 

 the specimens were on Cactus, sp. (prickly pear), from the 

 Kurnool and Amantipur districts, India. Mr. Green gives 

 only a very brief account of it in the "Indian Museum 

 Notes"; his detailed description is, I believe, in the press 



(1896). . : 



