COCCIDAE, APHIDIDAE AND ALEYRODIDAE. 



37 



5. Pseudococcus cocotis (Mask.) Text-fig. 1. 



On stems of coconut associated with ants, Apia, 31.i.l924. This species 

 is not unhke P. vitiensis Gr. and Lg., but it differs from the latter in the less 

 protuberant and less strongly defined cerarii, and in the more pronounced body 

 setae. The following additional notes may serve to make the species more 

 easily recognisable. Antennae 8-segmented, the proportions of the segments 

 being 30, 25, 20, 10, 12, 11, 16, 40. Cerarii 17 pairs, each cerarius with more 

 than 2 spines, the figures being as follows : (17) 3, (16) 4-5, (15) 5, (14) 4-5, (13) 5, 

 (12) 4-5, (11) 4, (10) 3, (9) 3, (8) 5-6, (7) 3, (6) 4-5, (5) 3-4, (4) 5, (3) 4-6, (2) 5, 

 (1) 5 ; each cerarius with one or more secondary setae and trilocular pores not 

 crowded together nor differentiated from the general body surface. Transverse 

 series of large circular pores on the last three abdominal segments, with a few 

 on the fourth. Legs unequal, the proportions of the tibiae and tarsi of the first 

 being 60 : 40, the second 65 : 40, and the third 80 : 43 ; claw without a denticle. 

 Anal ring setae subequal to those of anal cerarius. Length approximately half 

 as great as breadth, 2-5 mm. 



For the determination of this species, I have depended upon preparations 

 in E. E. Green's collection assigned to P. cocotis (Mask.) by Ehrhorn. 



6. Pseudococcus comstocki (Kuw.) 

 Tuasivi, Savaii, 8.ii.l924, on the leaves of Pandanus. 



7. Trionymus sacchari (Ckll.) 



Recorded by Swezey, Hawaiian Planters' Record, XXVIII, p. 215, 1924. 



8. Ceroplastes rubens Mask.* 



This species seems to be common throughout the islands. It was found 

 on an unknown species of fern at Apia, 7.ii.l924, and Vailima, 8.vi.l924 ; on 

 an undetermined garden tree and on cinnamon at Malua, Upolu, ix.l924 ; and 

 on another unknown shrub on Malololelei, vii.1924. It was also found at Hog 

 Harbour, Santo Island, New Hebrides ; and on Melaleuca sp. at Tontouta, New 

 Caledonia ; but it is a species which is abundant throughout the whole of the 

 South Pacific Islands. Doane and Ferris state that it was very abundant on 

 mango in Samoa. 



