70 ENTOMOLOGICAL NEWS. [Feb., 718 
mentioned material. The most typical form was that shown 
in Fig. 1. The variations occurred in various characters. 
The end hook showed four tyes: Type I (Fig. 2) was long 
with the first tooth indistinctly separated from it. There were 
fifty-five specimens of this type. 
Type II (Fig. 3) was short with the first tooth indistinctly 
separated from it. There were forty-eight specimens of this 
tvpe. 
Type III (Fig. 4) was long with the first tooth distinctly 
separated from it. There were five specimens of this type. 
Type IV (Fig. 5) was blunt at the end and occurred six 
times. 
The number of teeth on the lateral lobe varied from four 
to ten. The most usual number was six or seven. The varia- 
tions toward few or many were both rare as is shown by the 
data: 
Left lobe Right lobe 
Number of teeth An 5,0, 7, 8710, 10 4.5, 6, 7,98, oa 
Frequency 1, 8, 40, 44,16, 0, I 0, 7,39, 44,18, I, I 
The median lobe varied in shape from nearly straight to 
very convex (Figs. 6, 7 and 8). The tooth on the front mar- 
gin was single or double. Each of these forms varied from 
rudimentary to pointed. In some cases it was absent. The 
occurrences were as follows: Median tooth absent in eight 
cases, single and rudimentary fifty-one cases, single and pointed 
thirty cases, bifid and rudimentary five cases, bifid and pointed 
nine cases. 
These variations show that the detailed characters which 
have been used to differentiate between species cannot be 
used as absolute criteria, but must be considered with general 
shape and size of the labia, which remain fairly constant in 
one species. 
Professor F. L. Washburn Ceases to Be State Entomologist. 
In order to be enabled to devote all of his time to closely allied 
economic work in the Agricultural Department of the University of 
Minnesota, Professor F. L. Washburn, for fifteen years State Entomol- 
ogist, has asked and obtained the consent of the Board of Regents of 
the University to drop the State Entomologist work, with its attendant 
police and quarantine duties, this change to be effective February 6th, 
1918. 
