298 



THE ENTOMOLOGIST. 



specimens illustrating the aberration would follow the group 

 illustrating the seasonal variety, the latter being the superior 

 form, and therefore taking precedence. The following label 

 would indicate the superior phase of variation ; — 



Var. lutescens. 



A number of other combinations may be made with the signs in 

 a similar way. 



And now I come to the subject of Ocellation. I have pre- 

 pared a special label for the purpose of illustrating this ]iariicular 

 Idnd of variation in the Satyridae, the following of which is a 

 specimen : — 



12345 



12345 



10000 



10000 



The four squares represent the four wings, and the Arabic 

 numerals the submarginal spots upon each of them. The typical 

 number of spots in each wing is represented by the same number 

 of figures, and the number commences with the spot situated 

 nearest the apical point. When any spot in the series is absent 

 it is represented by 0, thus 12005, 10340, 10040. When 

 very indistinct, only rudimentary, or when blind (i.e. when the 

 typical form possesses a spotted centre), it is represented by x, 

 thus 12xx5, 1x34 X, lxx4x. When two or more spots coalesce 

 they are put in parentheses thus (12)345, 1(234)5. When 

 the series is discontinued, or when there are two series of spots, 

 a dot is placed between each of them, as 12.345. 



The above formulae I have found of great assistance in studying 

 the ocellation of the Satyridse, and am therefore in a position to 

 recommend its use by students of this particular phase of 

 variation. I hope I have succeeded in making the description 

 of it sufficiently intelligible. 



The data labels which I employ are of a uniform size of one 

 by half an inch, the same as those illustrating variation, with 

 the exception of those relating to ocellation, which are only about 

 a third of an inch in width, the length (one inch) being the same 

 however as the others. 



The system of research which I here publish, and the method 

 of arranging the collection in illustration of it, may possibly be 

 improved upon ; and if any of your readers have anything to 

 suggest it will be very acceptable. In the meantime I will con- 

 clude by repeating that it affords me much pleasure, from an 



