684 The American Naturalist. [July, 
It is not possible to find any differential sexual character between 
the two forms disinguished by Mr. Hancock as male and female. The 
form figured (plate XXII) is the syringobial nymph, and the other the 
parthenogenetic female. 
In the interior of the quill, the Syringophili feed, according to the 
manner of the Analgesine, on the marrow (or pith) of the feathers. 
The transformation into adult Cheyletus takes place likely out of the 
quill, which explains why the syringobial form is found, but rarely, in 
the plumage, outwardly to the feathers, as in the case observed by Mr. 
Hancock. 7 | | 
As to the Syringophilus uncinatus Heller, it is a true Cheyletus. 
In summary: : 
1. Picobia villosa (Hanock)=—Syringophilus bipectinatus (Heller). 
2. Syringophilus bipectinatus is a syringobial form of Cheyletus norn- 
eri (Poppe).—Dr. E. L. TRoverssart, Paris, France. 
Preparing Orthoptera.—In Special Bulletin No. 2 from the 
Department of Entomology of the University of Nebraska Prof. Law- 
rence Bruner gives excellent directions for collecting and preserving 
Orthoptera. Regarding the process of “ stuffing ” he says :—“‘Within the 
past few years most of the objections that had so frequently been made 
to the gathering and preservation of orthopterous insects, have practic- 
ally been removed by the adoption of different and better methods of — 
preparing and preserving these creatures. A few of our specialists only 
seem to have profited from -the discovery that these insects can be 
handled ‘ taxidermically,’ ʻi. e., be stuffed in a similar manner as we 
would adopt for birds, reptiles and mammals, and thereby preserved 
in collections equally well with other forms. The following directions 
for collecting, cleaning and ‘stuffing’ orthopterous insects may, there- 
fore, be of much value to those who contemplate making collections of 
and studing these insects. Instead of throwing the specimens in spirits 
(alcohol, brandy, whisky, ete.), when captured they should be killed in 
the ‘cyanide’ bottle from which they should be removed soon after 
death, and at once opened, cleaned and stuffed ; or they can be trans- 
ferred to a small tin or other box where they may be kept moist and 
flexible till arrived at home or in camp. Now take the specimens, one 
at a time, in the left hand, and with a fine, sharp-pointed scissors open _ 
the abdomen by cutting across the middle of the two basal segments on 
the lower side, then reverse and cut the opening a trifle larger by 
nearly severing the third segment. After this has been done extract 
all of the insides (intestines, crop, ovaries, etc.), along with the juices, 
