CAMPBELL.—JBlepharoceridae (Diptera) of New Zealand. 263 
Professor Bezzi inclines the writer to believe that his larva B* (pp. 122-123) 
is also a stage of larva and it is not surprising that in the speci- 
stages of larva A taken from the stream at Akaroa. The larva of chiltoni 
(see figs. 15-26) in its first instar can be distinguished by its one-jointed 
antenna, and has the anal set of gills only. The cephalothorax is nearly 
destitute of spines or setae, and on the dorsum the main armature consists 
emergence. A moult occurs, and the larva emerges in its second instar 
with normal two-jointed antennae and increase of setae and spines. The 
larva is characterized by complete loss of the whole series of small black 
spines. The armature consists of transparent cone spines, 12 on the cephalo- 
thorax, 14 on the abdominal, and 18 on the sixth segment (19211, figs. 22-27). 
An increase of one gill a side occurs on all segments except the first (see 
figs. 19-24), and from this stage they appear to increase in number 
нонво of the moults. After the second ecdysis the larvae аге still of 
t m dark-brown or * black " colour, and well-developed specimens 
to the other segments till the pattern is completed. The black large spines 
of the fourth instar are visible through the epiderm of the third, and both 
arm. 
The эрес оп р. 264 is temporary, and subject to correction. 
The writer wishes to express his keen € of the help and 
encouragement he has invariably received from Professor Bezzi, and hi 
indebtedness to Messrs. Myers and Hamilton, and many ends: for specimens 
and new s ecies. Investigation of the immature stages has only 
localities a series ranging efe aie egg to im ie anh larva and pupa. 
Dr. R. J. Tillyard's revision of these interesting flies will be found in the 
N.Z. Journal of Science and Technology, vol. 5, pp. 101-7, 1922; and 
students will look forward with interest to the work of Monsieur E. Tonnoir, 
of the Brussels University, now at the Cawthron Institute, Nelson, who 
is at present engaged in a study of the whole Australasian group of 
Blepharoceridae. 
* M. Bzrzzi, Bull. Soc. Ent. Ital., vol. 45, pp. 115-29, 1914. 
1 J. W. CAMPBELL, Trans. N. Z. Inst., vol. 53, p. 270. 
