1904.] 205 



the normal number ; but there is usually a more or less complete subdivision of 

 eitlicr the terminal or the penultimate joint. Some stout hairs at extremity. Formula 

 very variable, no two examples agreeing ; 2ncl usually longest, sometimes equal to 

 Srel ; 5th and 6th, or Gth and 7tli shortest. Logs with a deep constriction near 

 the middle of the tarsus, simulating a joint, a somewhat similar false joint being 

 apparent near the base of the tibia. Foot with four digitules ; the unguals spatu- 

 late ; the tarsals fine knobbed hairs. Plates of anal opei'culum (fig. 1 e) with inner 

 edge longest ; outer edge shortest and rounded ; base straight, three-quarters the 

 length of inner edge. (My examples are not in sufEeiently good preservation to 

 enable me to determine the number of hairs on the anal ring). Anal cleft rather 

 more than one-quarter total length of insect. Margin with very minute inconspi- 

 cuous simple hairs at considerable intervals. Derm thickly set with oval translucent 

 pores, separate from each other by a little more than their longest diameter (fig. 1 d). 

 Length, 4 to 5 mm. ; breadth, 3 to 4 mm. ; height, averaging 3 mm. 

 Other stages unknown. 



Hahitat : AYithin the tunnels formed in branches of Erythrina 

 litliosperma by some boring caterpillar or beetle (fig. 1 a). 



The Coccids are entirely concealed, attached to the walls of the 

 tunnel, sometimes at a distance of from G to 10 inches from the exit. 

 Prof. Zimmermann informs me that they arc always attended by ants. 

 (Coll. Zimm., No. 1). 



Lecanium (Saissetia) uemisph.^ricum, Targ. 

 On Coffea arabica (No. 20). 



Lecanium (Eulecanium) psidii, Green. 

 On Jamhosa sp. (No. 28). 



A formal description of this species appears in Part III, "Coccidee 

 of Ceylon." 



Lecanium (Paralecanium) expansum. Green. 

 On Zingiberaceous plant (No. 25) and Lepidadenia wif/hfintia 

 (No. 95). 



Lecanium expansum,, var. metallicum, n. var. 

 Differs from type in having a beautiful iridescent metallic sheen 

 on dorsum of living insect, disappearing after treatment with i)olash. 

 Margin closely stippled with dark opnqne spots. On Mi/riatica 

 fragrans (No. 38). 



Lecanium expansum, vnr. jatanicum, n. var. 

 Differs from type in having a minute but regular dermal reticu- 

 lation. On Anomianlhus heterocnrpus (No. Ol). 



