1G8 Proceedings of the Royal Physical Society. 



stage applied to the caudal. It is probably in this part that 

 the imperfect supplementary rays of the caudal are developed, 

 which are particularly well seen in some specimens of 

 L. Gouanii. 



Explanation of Plate VII. 



Fig. 1. Larva of L. microcephaly^ 7 mm. long, showing the continuous 

 embryonal fin. 



Fig. 2. Larva of L. microcephalus 9 mm. long, showing the fin divided 

 into dorsal, caudal, and anal, together with the remnant of the intermediate 

 portions applied to the caudal. 



Fig. 3. L. microcephalus, lateral view. 



Fig. 4. L. microce23halics, ventral view. 



Fig. 5. L. Gouanii, showing the nasal filament, and the two characteristic 

 dark spots behind the eye. 



Fig. 6. L. himaculatns, ventral view, showing the characteristic outline of 

 the head and trunk and the paired latero-ventral ocelli. 



XIX. Note by William Evans, Esq., F.R.S.E., on a Specimen 

 of the Red-footed Falcon (Falco vespertinus, L.), ex- 

 hibited by him at the Meeting of the Society, held 

 20th February 1889. 



Instances of the capture of the Red-footed Falcon in Scot- 

 land are so rare, that the specimen exhibited is believed to 

 be but the third on record. It was shot on 21st June 1888, 

 near Swinside, a few miles from Jedburgh, and taken the 

 following day to Mr Robert Hope, birdstuffer, there, who kindly 

 sent it up for exhibition.^ It is a male, as was proved by dis- 

 section, probably just entering its second year. Mr Hope states 

 that its stomach was filled with the remains of beetles. The 

 mixture of the plumages of the immature and adult state, 

 presented by the specimen, is very interesting; and as I 

 cannot call to mind any figure or description coinciding with 

 it, I give here the following details : — Upper part of head, 

 bluish-grey or lead colour, darkest on the cheeks, the shaft 

 of each feather darker, imparting to the plumage a finely 

 streaked appearance : back of neck, pale reddish-brown or 

 ferruginous : sides of neck, chin, and throat, greyish-white : 

 back, scapulars, middle and lesser wing coverts, and upper 



1 Since the specimen was exhibited, it has been acquired by the Edinburgh 

 Museum of Science and Art. 



