species of the Geniis lAmenitis. 483 



are much more rounded than those of H. Brcdoivii, and are 

 not produced at the end of the second median nervule." 

 The more rounded shape of the hind-wings is also very clear 

 in the northern form, those of the southern (Figs. 4, 5 and 

 9) being more triangular in shape, and the hind margin 

 tending to form a straight line with that of the fore-wing 

 to a greater extent than in californica (Figs. 2 and 3). In all 

 these points by which the shape of californica is rendered 

 different from that of Iredoioi, there is resemblance between 

 it and lorquini. 



b. The fulvous mark at the anal angle of the hind-wings. — 

 It is unnecessary to describe this distinction in any detail ; 

 for the characteristic form of the marking is well shown 

 in Figs. 4, 5 and 9, together with its diminution in the 

 northern form (Figs. 2 and 3). It is barely seen in Fig. 3, 

 although visible in the specimen itself. Fig. 2 however 

 shows the marking distinctly and affords a fair comparison 

 with the condition represented in the southern examples 

 (Figs. 4, 5 and 9). Here too the divergence from the 

 southern hredowi is coincident with resemblance between 

 the northern form and lorquini. 



c. The step-like hi^eak in the hand at the junction of fore^ 

 and hind-wings. — As regards this feature californica is 

 certainly far nearer than the southern brcdoioi to the 

 appearance presented by lorquini. Bredowi approaches the 

 condition, seen in many Adelphas, of a straight continuous 

 band sweeping from fore-wing on to hind. Compare 

 the representation of the southern form in Figs. 5 and 

 9, with those of the northern in Figs. 2 and 3, and the 

 latter with lorquini, shown in Figs. 6, 7 and 8. The 

 break on the inner margin of the band in the Arizona 

 example represented in Fig. 4 is intermediate between 

 the more northern californica and more southern brcdmui. 

 The difference between the right and left sides of Fig. 9 

 was probably caused by the "setting." The step-like 

 break of californica is produced by the small size of 

 the last pale spot on the inner margin of the fore-wing, as 

 well as by the direction of the last spot but one, which is 

 so placed that its inner border forms a considerable angle 

 with that of the hind-wing band. If Figs. 4, 5 and 9 be 

 compared in this respect with 2 and 3 it will be seen that 

 the last spot of the southern form is much larger,* while 



* This point of distinction between californica and bredoivi was 

 described by A. G. Butler in Proc, Zool. Soc. Lond., 1865, p. 465. 

 TRANS. ENT. SOC. LOND. 1908.— PART III. (DEC.) 32 



