Part 163

All the abbreviations used in this plate are readily understood.

PLATE II. Structures of Head, Mouth, Thorax & Genitalia

1. Head of wasp from front.

2. Head of honey bee with mouth parts extended.

3. Head of Locustid from front, to show regions.

4. Head of a Lepidopteron from front.

5. Head of a cricket from front.

6. Labium of a cricket showing all usual parts.

7. Maxilla of Harpalus caliginosus, with all sclerites marked.

8. Mandible of Copris carolina with all sclerites defined.

9. Thorax of a Hymenopteron from above.

10. Genitalia of a male mosquito with all parts named.

11. Genitalia of a male Noctuid from below: the parts separated out.

PLATE III. Venation According to the Comstock System.

1. Wing venation of a Noctuid.

2. Wing venation of a Hepialid.

3. Wing venation of a Locustid.

4. Wing venation of a Hymenopteron.

5. Wing venation of a Dipteron.

6. Wing venation of an Odonat.

7. Wing venation of a Cicada.

Abbreviations are as follows:

C. Costa, except in figure 1, where on the outer margin C occurs instead of Cu. In the cells it means Costal.

Sc. Subcosta, when it refers to a vein and subcostal in a cell.

R. Radius, when it refers to a vein and radial when in a cell.

M. Media, when it refers to a vein and median in a cell.

Cu. Cubitus, when it refers to a vein and cubital in a cell.

A. Anal veins or cells.