THE MARSH TITMOUSE IN STRATHSPEY 207 



where seen, consists of an excessively minute and close tuber- 

 culation, which is, however, coarser and more prominent round 

 the margins of the orbits : the cornua are not provided with 

 denticles along their inner margins. The pseudo-tesselation 

 of the middle layer is proportionally minute. 



The remains of the body are scanty and badly preserved ; 

 but on its scales clear evidence is afforded of a tubercular 

 ornament similar to that of the cranial shield. 



To this new species of Cephalaspis> which is so interesting 

 from its geological position and locality, I propose the name 

 of C. magnified. 



The occurrence of Cephalaspis in the Caithness Flags has 

 however, no important bearing on the question of the relative 

 a^es of the Orcadian Old Red Sandstone and that of Forfar- 



o 



shire and the West of England ; as a species of the same 

 genus (C. laticeps) has already been described by me from the 

 Upper Devonian of Canada. 1 



THE MARSH TITMOUSE IN STRATHSPEY. 

 By WILLIAM EVANS, F.R.S.E. 



A DETAILED account of the distribution of the Marsh Tit in 

 Scotland is much to be desired, and would form a capital 

 subject for a paper in the " Annals." But such a paper, to 

 be of any real value, would have to be based on a much 

 more extensive series of observations than is yet available ; 

 for it must be admitted that our knowledge of the distribution 

 of this interesting bird north of the Tweed is still very im- 

 perfect It has, to be sure, been recorded from practically 

 every county in the Lowlands ; but even there it is much 

 overlooked, while in the Highlands and the northern parts 

 of the country generally, records of its occurrence are very 

 scarce indeed. 



Though undoubtedly local, and, as a rule, far from 

 common, I am persuaded it is neither so very local nor so 

 rare as is generally supposed. Among tiny and inconspicuous 



1 "Geol. Mag." (3), 1890, vol. vii. p. 16. 



