1897.] 



75 



DiASPis CALTPTROiDES, Costa, ? . — The numerous white scales 

 of this species were abundant on several species of Cacti ; and for 

 some unaccountable reason were crowded together, in favourite spots, 

 in little masses five or six deep. This and the preceding species are 

 new to Britain. 



Parlatoeia Pergandei, var. crotonis, Cockerell ; ^ and ? 

 scales. — Common on several species of croton. 



Lecanium perforatum:, Newstead, ? . — Swarming on the Caryota 

 and other palms ; their flat shining bodies looking remarkably like 

 detached fish-scales. Undoubtedly the species is partial to the above 

 plants ; but it also occurred freely on Eugenia malaccensis, Diospyros, 

 Bp. (Mauritius), and Coccohha, sp. 



Planchonia (Asterolecanium) bambus^, Boisd., $. — Very 

 common on Bamhusa vulgaris, and other species of bamboo, both upon 

 the stems and leaves. Their presence is marked by small yellow 

 stains on both sides of the infested leaf. I did not observe the ^ in 

 any stage. 



Coccus TOMENTOSUS, Lam. — $ adult covered with, or resting upon, 

 cottony material at gestation ; colour, dark crimson ; ovate ; segmentation dis- 

 tinct. Antennae (fig. 1) very short, tapering, scarcely so long as the tibia and tarsus 

 together, of six joints ; 1 very broad and flat, somewhat resembling a quoit ; 2 often 

 only indicated by a very thin strip of chitine ; 3 longest ; all the joints are widely 

 separated, and the apical one has a few short hairs. Mentum monomerous; filaments 

 short. Legs stout, strong, and chitinous ; digitules simple. Anal orifice (ring), 

 indicated by a lunular piece of chitine, is without the spiny hairs common to many 

 genera of the Coccidee. Dermis (fig. 3) above with numerous truncate spines of 



Kig. 5. Fig. 4. Fig. 2. Fig. 6. Fig. 1. Fig. 3. Fig. 7. 



varying sizes and length, and numbers of irregular groups of compound spinnerets, 

 exactly corresponding to those one finds in the DiaspincB ; ventrally there ai'e 

 numbers of small isolated spinnerets and a few minute spines. Anal lobes perfectly 



