257 



Distribution. — Originally recorded by Comstock from Louisiana 

 and Cuba. Since found in Trinidad (Hart and Caracciolo), Antigua 

 (Barber), Demerara (Morgan), Mexico (Townsend\ Tonga, New Zealand 

 and Australia ) Maskell) ; also in Bermuda (Ins. Life, iv, 267). 

 Food-plants. — Citrus Trees. 



Destructiveness. — This is an extremely pernicious scale of orange and, 

 lime trees, and every effort should be made to prevent it from becom- 

 ing universally distributed in the West Indies. 



(55.) Chionaspis brasiliensis, Signoret. (The Brazilian Snow-scale). 



Diagnosis — Flat pyriform reddish brown female scales, accompanied 

 by minute tricarinate snow-white male scales. The female scales vary 

 in depth of colouring. 



Distribution. — Originally found at Bahia, Brazil. Since detected in 

 Trinidad (Urich and Hart), Ceylon (Green) and South Australia (Mas- 

 kell.) 



Food-plants. — Usually found on leaves of ferns and orchid. Green 

 found it on Strobilanthes and Acacia, 



Destructiveness. —Not usually very troublesome, but must become so 

 when very abundant, as Green found it in Ceylon. 



Remarks — It is considered by Maskell that this and C. aspidistra, 

 Signoret are forms of one species. The name aspidistra? has priority 

 of place in Signoret's work. The typical C. aspidistrce is reported by 

 Maskell from India, and I have seen it from Japan, whence it has been 

 brought to California. 



(56.) Chionaspis minor, Maskell. (The Small Snow-scale.) 



Diagnosis. — Small, elongated snow-white female scales, with male 

 soales similar to those of the last species. 



Distribution. — First found in New Zealand Common in Jamaica ; 

 also found in Trinidad, Antigua, Grenada and Grand Cayman. It is 

 probably a native of the West Indies. 



Food-plants. — Especially common on Hibiscus. Also on Parsonsia, 

 Bhipogonum, Erythrina, cotton, pepper, Pelargonium, coco-nut palm, &c. 

 A form of the species found by Mr. Barber in Antigua burrows under 

 the epidermis of Hibiscus. Mr. Hart wrote from Trinidad that the 

 species u affects all kinds of Pelargonium, especially the Cape kind and 

 Zonals." 



Destructiveness. — From its frequent abundance, it becomes quite 

 troublesome on garden plants. 



(57.) Chionaspis major, Ckll. (The Large Snow-scale). 



Diagnosis. — The scale is much larger and rounder than the last, with 

 the brownish exuviae near the edge. The male scale is white, small, 

 tricarinate. This insect is not a typical Chionaspis, but might almost 

 as well be put in the genus Diaspis. 



Distribution. — Only known from Antigua, where it was found by 

 Mr. Barber. 



Food-plant. — Numerous on stems of Heliotrope. 

 Destructiveness. — It would be quite destructive if it became common. 



Genus Diaspis. 

 (58.) Diaspis amygdali, Trj^on. (The White Peach-scale). 

 Diagnosis. — Female scale small, nearly circular, white with a red- 

 brown spot representing the exuviae. Male scale small, only slightly 

 keeled, whit© with the brown exuviae at one end. 



