I 



Species of the Genvs Limenitis. 481 



Mimetic resemblance stronger in the southern 

 examples of lorquini which are geographic- 

 ally coincident with californica. 



The following features, described in the preceding 

 section, promote a superficial resemblance of lorquini to 

 calif ornica : — 



(1) The fulvous apical area of the fore-wing. 



(2) The cream tint of the discal band crossing both 



wings. 



(3) The fulvous marking at the anal angle of the 



liind-wing. 



Of these features the last is so excessively variable and 

 so often absent in both northern and southern examples, 

 that very long series would be required in order to com- 

 pare the average development in the two areas. This 

 element in the mimetic resemblance is apparently in- 

 cipient and imperfectly established. 



The discal band is apparently paler in the northern 

 lorquini than the southern. The difference, which is 

 excessively slight, may be best seen when a series of 

 individuals are compared ; but I do not think that the 

 conclusion can he regarded as safely established until a 

 large number of fresh specimens have been carefully 

 examined from this point of view. 



As regards the most important feature in the mimetic 

 resemblance — the fulvous apical area — there is un- 

 doubtedly a much greater average development in the 

 examples of lorquini from California and Oregon (Figs. 7 

 and 8 respectively) than in those from British Columbia 

 and Vancouver's Island (Fig. 6), entirely beyond the 

 range of the model. 



In many of the southern specimens of lorquini the 

 fulvous apical patch extends inwards (as in Fig. 8 on 

 Plate XXV) nearly as far as the outer border of the costal 

 end of the discal band in the fore-wing. The colour is of 

 a richer deeper shade than the bright tawny patch of 

 californica. 



On the under surface the development of the inner row 

 of submarginal bluish-grey lunules into a festooned band 

 in a large proportion of the examples of lorquini is 

 probably caused by mimetic approach to californica. At 

 any rate the marking is often a more conspicuous feature 



