78 MR. J. LUBBOCK ON THE DEVELOPMENT OF CHLOEON DIMIDIATUM. 
number and position of the “chief segments," and in the development of the fringe, 
which on some of the segments consisted of five setae. Some segments of the lateral tails, 
however, had six. "There was no trace of darkening. 
Again, a specimen which I began to watch on the 27th of November, when it was 
apparently in the eighth stage, moulted on the 29th, and again on the 8th of December, 
when therefore it ought to have been in the tenth state. And, in fact, the length of the 
central tail, as well as the number of its segments, agreed with the description given in 
page 74, and the organ differed only in one little point, viz. that the circle round the 
fifteenth segment was scarcely more developed than its neighbours. In the lateral tails 
the sixth and seventh segments already showed traces of a subdivision, and the nineteenth 
segment liad already distinguished itself. On the other hand, the posterior angles of the 
mesothorax were not more produced than those of the following segment. This specimen 
was gpoths in length. : 
DESCRIPTION OF THE PLATES. 
PLATE XVII. 
Fig. 1. Chloéon in the First State, x 60. 
Fig. 2. Outline of Chloéon in the Second State, x 60. 
Fig. 3. Third State, x 60. 
Fig. 4. Hive posterior denied segments of Chloéon in the Fourth State, x 60. 
Ep 5. Four 3 n "i de Fifth State, x 60. 
Fig.6. Four  , is B E Sixth State, x 60. 
Fig. 7. Three j, s » s Seventh State, x 60. 
Fig. 8. Three  ,, T Eighth State, x 60. 
(In the last five the the basal part only of the lateral tails is figured.) 
Fig. 9. Larva in the Ninth State, x 30. 
(In this figure neither the segments nor the hairs on the antennz and the tails are quite correct.) 
PrATE XVIII. 
Fig. 10. Outline of the head, thorax, and first abdominal segment of a specimen in the Tenth 
State to show the commencement of the wings, x 30. 
Fig. 11. Ditto ditto in the Eleventh State, x 30. 
Figp1s.-^,., ^ Twelfth State, x 30. 
Pep 1927 3 A" Thirteenth State, x 30. 
Ep 14. 5 Fifteenth State, x 30. 
Fig. i) p » Sixteenth State, x 15. 
Feo. 182 . : a Seventeenth State, x 15. 
Fig. 17. a subsequent State, x 15. 
Fig. 18. Aelian of hives i in First State, x 125. 
Fig. 19. ji ii Second State, x 125. 
Fig. 20. » 2 Third State, x 125. 
Fig. 21. m Fourth State, x 125. 
Fig. 22. Anteil gill of larva in Fourteenth State, x 60. 
FE. , » Fifteenth State, x 60. 
Fig. T Second m Sixteenth State, x 60. 
