new and Uttle-knoivn American Coccidse. 159 



antennae are almost exactly as in C. cuhiis, Hempel, but that 

 species has thin wax. The specimens described had pro- 

 duced many young. 



Ceroplastes purpurellus, sp. n. 



$ . — Scale 2^ millim. long, 2 broad, 1^ high ; dull purple- 

 grey, plates indistinctly outlined by slightly darker lines ; 

 nuclei white, on large dark brown patches, the dorsal patch 

 covering the whole of the rather obliquely truncate apix. 

 From the lateral nuclei narrow bands of chalk- white secretion 

 run to the margin. The scales vary much in height. 



Denuded female rounded, caudal horn distinct and sharp, 

 but very short; dorsum hardly cristate; wax fairly thick. 

 Boiled in KHO the skin becomes yellowish hyaline, mostly 

 without conspicuous glands. Anal plates 90 /a long and 42 

 broad, their outer sides rounded, not sharply angulate. 

 About 17 glands in stigmatic area. Antennse 7-jointed, first 

 ring-like; joints measuring in /x : (1) 12-15, (2) 33, (3) 36- 

 42, (4) 51, (5) 20-24, (6) 18-21, (7) 24. Anterior legs 

 with femur + trochanter 135 fx long, tibia 90, tarsus 60, 

 slightly constricted near the middle. Tarsal digitules fili- 

 form ; claw-digitules with large knobs. 



Hub. Tonila, Jalisco, Mexico, on a tree 12 feet high, 

 Aug. 2 {Townsend). It occurs on the twigs, and on the 

 same twigs are specimens of Howardia hiclavis (Comstock). 



C. purpurelJus is allied to C. brachyurus, but is easily 

 distinguished by its smaller size, more compact form, and 

 different colour. The examples described had produced 

 young. 



Ceroplastes Toivnsendi, Ckll., var. percrassus, nov. 



? . — Waxy scale about 16 millim. long, 13 broad, 12 high ; 

 wax white, with a faint yellowish tint (not in the least pink), 

 very watery, about 4^ millim. thick; no division into plates; 

 two chalky stripes on each side beneath, not at all visible on 

 the outside. Denuded female very dark reddish brown, long. 

 6^, lat. 5, alt. 5 millim., not counting the long caudal horn, 

 which is 4 millim. long, black, and only very slightly inclined 

 upwards. The sides have each three short pointed projec- 

 tions, of which the middle ones are the largest; the dorsum 

 is low-pyramidal seen from the side, conical seen from the 

 end, terminating in a distinct though rather blunt process, 

 having the form of a short longitudinal keel. Boiled in 

 KHO the insects colour the liquid dark madder-red. Legs 

 very dark brown; femur -|- trochanter about 210 /x long, tibia 



12* 



