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FIRST WEEK. Vo*, 



NEEDED.* A number of grasshoppers. 



FIRST HOUR. Draw one of the legs, naming the parts as follows: 

 Coxa, trochanter, femur, tibia, tarsus (three-jointed). Describe the 

 nature of the union between each of these parts. Compare each of 

 these parts in the three pairs of legs, and note particularly: (a) Strength- 

 ening ridges, () modifications of the surface for the attachment of 

 muscles, (c) guidepieces at the joints, (d) position and use of spines, (<?) 

 pads on the feet the one at the end is called the pulvillus, (/) claws 

 on the feet ungues. Note the number of joints in the antenna, the 

 two basal ones (scape and pedicel) somewhat different from the remain- 

 ing part flagellum. Indicate the character of the union between these 

 parts. Examine the eyes and the simple eyes ocelli, describing their 

 shape and position. 



SECOND HOUR. Remove the head and pin it against the cork 

 holder. Observe the palpi. Note the number of joints in each pair. 

 Observe the lips above or in front labrum, on the sides galeae, 

 and below labium. Draw the whole labium indicating the mentum, 

 ligula, palpi and the lobes lips proper. Remove the labium, 

 exposing the maxillae. Draw one of these, naming the parts as fol- 

 lows: Cardo, stipes, palpifer, palpus, galea, lacinea. Examine the 

 large jaws mandibles, beyond the maxillae, and the small basal piece, 

 and also the clypeus to which the labrum is attached. 



THIRD HOUR. Insert a blunt pin into the hind end of the insect, 

 pushing it forward until it comes against the front of the head, stretch- 

 ing the neck well out. Observe now the parts of which the head is 

 composed, and indicate the relation of these parts to the appendages. 

 Attempt to trace by semi-diagramatic drawings the relation between 

 labium and maxillae and between all the appendages of the head and 

 legs. 



*The following material is needed throughout the course: 



Magnifier. A Coddington or other lens of about a half-inch focus. 



Cyanide bottle. A small lump of cyanide of potash cemented to the bottom of an 

 eight ounce salt-mouth bottle in plaster of Paris. 



Pins. Klajger insect pins Nos. 1, 3, and 5 are recommended, but ordinary pins do for 

 dissecting. 



Cork holder. A wine or other large cork to pin the insect to while studying. 



