Homopterous insect from Ceylon. 888 



Fig. C. — The pupa, taken out of the tube. 

 II 7. — The perfect insect (natural size). 

 M 8. — Front of head of imago, showing the rudimental ocelli 



in two impressed spaces of the hind part of the vertex. 

 II 9. — Side view of the head, showing the antennae inserted 



close to the anterior margin of the eyes. 

 11 10. — One of the antennte. 

 ,, 11. — The doi'sal thoracic horn. 

 M 12. — Fore wing or tegmen. 

 ., 13. — Hind wing. 

 I, 14. — Hind leg. 

 M 15. — Under side of the abdomen of the male imago. 



PS. — Whilst this memoir was in preparcation there 

 appeared in an American entomological periodical the 

 following notice of a very similar discovery, in New 

 Holland, of a case-making species : — " At the meeting of 

 the Linnean Society of New South Wales on the 26th 

 November, 1884, a paper was read by F. Ratte, M.E., 

 on the larvse and larva-cases of some Australian 

 Aphrophoridce, in which the larval state of some small 

 species of Ilhyngota, closely allied to the genus Aphro- 

 phora, and probably belonging to the genus Ptyelus, is de- 

 scribed. The description of the larva-cases and of some of 

 the larvae discloses a feature probably new to the science 

 of Entomology. These cases, unlike those of insects 

 generally, are true shells, containing at least three- 

 fourths of carbonate of lime, and resembling in shape 

 some fossil and recent SerpulaB, some being conical, 

 others serpuliform or helicoidal. The conical shells are 

 fixed on the branches of some species of Eucalyptus, the 

 mouth turned upwards, the larva being placed in it with 

 the head downwards. It introduces its suctorial apjDa- 

 ratus into the bark of the stems, sucking the sap of the 

 tree, and emits from time to time, by its anus, drops of 

 clear water. This property of emitting clear water is 

 possessed by all the family." — ' Psyche,' vol. iv., p. 288, 

 June, 1885. 



TEANS. ENT. SOC. LOND. 1886. — PART III. (oCT.) 2 A 



