14 



ARKIV FÖR ZOOLOGI. BAND 12. N.O 7. 



the black band at the proximal end of the latter. On the 

 inner web is a triangulär, (I cm) black spöt situated at the 

 margin subapically in the white of the tip. A 2 cm long, 

 semilunar, black spöt is found at the rhachis on the inner 

 web about 7 cm from the tip. The remainder of the inner 

 web is grey. The shaft is distally white, proximally brownish 

 horn-coloured. 



The third primary has a shorter white tip, about 16 mm. 

 It is followed on the inner web by a 2 cm black spöt, bor- 



Fig. 4. Diagram of primaries of a Lams marinus (f X L. glaucus $ . 



dered proximally by a white spöt of nearly the same size, 

 the remainder of the inner web being grey. Inside the white 

 tip the outer web presents a black band of the same shape 

 as that of the second primary and measuring about 13 cm 

 in length. The proximal part is grey. The shaft is similar 

 to that of the second primary. 



The pattern of the fourth primary is similar to that of 

 the third. The white tip measures about 19 mm, and the 

 black, subapical spöt of the inner web about 15 mm. The 

 black band of the outer web is much shorter (only about 65 

 mm) and narrower than in the third primary, the grey wedge 



