No. 2.))° LARVA OF CTENOPHORA: ANGUSTIPENNIS. 559 
emergence of the fly much damage would inevitably result 
and a perfect adult would be rare indeed. If the pupa is 
extracted from its burrow it very shortly establishes itself in 
an equaly convenient position just beneath the surface. 
bk. Tae iia 
The fly emerges toward the end of April or the beginning 
of May, and is a very handsome fellow with his gay coloring 
of red, brown, or yellow. (Fig. 53.) The distinctive feature 
of the crane-flies, according to Comstock, is the presence of 
the transverse V-shaped suture, and this feature is very 
marked in this species. The wings are long and narrow, with 
a characteristic venation, the veins being partially fused at the 
proximal end. The ovipositor is composed of two long, horny 
pointed valves, well fitted for depositing the egg in firm sub- 
stances. The power of flight is not well developed and the 
ability to walk is also poor. The long legs are so feebly 
attached to the body that they are easily broken off. This 
species of Ctenophora ranges from Vancouver Island to Cali- 
fornia. In conclusion I wish to express my indebtedness to 
Prof. Trevor Kincaid, of the University of Washington, with- 
out whose aid and encouragement this paper would have suf- 
fered a great deal. 
BIBLIOGRAPHY. 
1. BENGTSONN, S. Ueber sogen, Herzkorper bei Insekten-larven, zu- 
gleich ein Beitrag zur Kentniss der Blutgewebe. Stockholm, 1880. 
2. Comstock, J. H., and NeepHam, J. G. Wings of Insects. Am. 
Nat., November, 1880. 
3. Dewi, J. A. Structure and Life History of Psychoda sexpunctata. 
Trans. Ent. Soc., London, October, 1905. 
4. Fotsom, J. W., and Wettes, M. W. Epithelial Degeneration, Re- 
generation and Secretion in the Mid-Intestine of Collembola. 
Univ. of Ill. Bulletin, Vol. IV, No. 6. 
5. Forsom, J. W. Entomology, with reference to its Biological and 
Economic Aspects. Blakiston, 1906. 
6. Frocet, J. H. S. Ueber den einheitlichen Bau des Gehirns in den 
verschiedenen Insecten Ordnungen. Zeitschr. f. wiss. Zoologie, 
1878. 
