A. W. Bellamy 57 



place the food. Some algae also grow upon it. The jars are of two 

 sizes, the mating jars being 8" x 11" and the offspring jars 9" x 15" 

 (cf. Nabours, 14, pp. 143, 144, and Fig. 1). 



The grasshoppers are fed on various filamentous algae which grow 

 in abundance during the early spring, throughout the summer, and 

 until late fall, in small streams, live-stock watering troughs, and similar 

 places. In the winter, as well as in the summer, special troughs kept in 

 the greenhouse supply a great deal of the food. If these food sources 

 fail the supply is supplemented with algae and lichens that grow upon 

 flower pots. 



Characters under observation. The characters used in this study are 

 the colour markings of the pronota and of the femora of the jumping 

 legs. For present purposes, they may be considered as polyomate 

 " forms " of the species parvipennis. For the sake of convenience in 

 reference and recording, the different patterns are represented by capital 

 letters. In instances where these letters are used apparently to indicate 

 a single factor, or gene, it is to be understood that they indicate only 

 the initiative reaction or impulse, or whatever it is, that ultimately 

 results in the character as it appears in the adult animal. The different 

 patterns may then be indicated as follows (see Plate III) : G = yellowish 

 white striped pronotum. D = white lined pronotum (bilineata), i.e. two 

 whitish lines extend the full length of the lateral carinae. E = slightly 

 fulvo-aeneous plus blackish striped pronotum, i.e. the whole pronotum 

 has an ill-defined blackish stripe on a pallid or slightly fulvo-aeneous 

 background. F= narrow banded femora ; this is subject to considerable 

 variation, and in some individuals the pattern approaches a circle in 

 outline, while in others it may appear as a white line. H (present only 

 in connection with and in addition to some one or two of the other 

 patterns) = light brownish-red pronotum and femora of the jumping legs. 

 M = melanic, i.e. the whole animal is a dirty-brown to almost black 

 individual. 



Homozygous individuals, since they receive their determiners for the 

 character in question from two parents, are indicated by doubling the 

 letter representing that pattern and heterozygotes are indicated by a 

 combination of the letters corresponding to the patterns represented 

 in their constitution. 



