190 
The specimen from which the above description was taken was 
procured at Clarence, Fernando Po, and was the only one that had 
been seen by the oldest colonist at that place. 
Pirra Punin. Pitta notd nigrd a mandibule superioris basi, super 
verticem usque ad collum eductd, et utrinque notd latd cervind 
marginatd ; plumis auricularibus et colli lateribus nigris ; dorso, 
tectricibusque alarum majoribus metallic viridibus ; tectricibus 
alarum minoribus, tectricibusque caude singulis, ad apices pallide 
ceruleis, instar cyani ; primariis, secondariis, rectricibusque caude 
nigris ; primariis tertid, quartd, quintd et sextd per medium albo 
fasciatis ; guld fere albd corpore subtis fuscescente-aurantiaco, 
rubido apud abdomen imum leviter tincto; rosiro, tarsis, digitis, 
unguibusque apparenter rubris. 
Hab. apud pagum, Port Lokkoh dictum, Sierra Leone. 
Mr. Fraser observed that considerable interest was attached to this 
bird, for which he was indebted to Robert Clarke, Esq., Senior As- 
sistant Colonial Surgeon at Sierra Leone—not only on account of its 
being a new species of a somewhat restricted group, but on account 
of its habitat, all the hitherto recorded species of Pitta being from 
continental India, the Indian islands, and Australia. 
Mr. Thomson, who originally procured the bird, observes in a note, 
that the Pulih, or Mocking Bird, is only found in the Timneh country ; 
that its note is exceedingly sweet, and when a Timneh would pay an 
orator or poet the greatest compliment, they say, ‘‘ He is a perfect 
Pulih.”’ 
It is most closely allied to Pitta brachyura, Auct. ; but differs from 
that bird in having the bill and feet red, a band over the eye, which 
is tawny, instead of olive brown; in the uniform colouring of the 
primaries, secondaries and tail feathers, the two former not being 
tipped with white, nor the latter with green; and finally, in the ab- 
sence of the red vent. 
The following ‘‘ Additional Measurements of the Blood-Corpuscles 
or Red Particles of Mammalia and Birds,” by George Gulliver, Esq., 
F.R.S., were read :— 
«Many observations are yet required to complete our knowledge 
of the comparative anatomy of the blood-corpuscles. The present 
contribution contains an account of some observations which I have 
made since the publication, in the English version of Gerber’s Ana- 
tomy, of my Tables of Measurements of the Blood-corpuscles of 
Mammalia and Birds. 
«In the present, as in the former tables, the measurements are all 
expressed in vulgar fractions of an English inch, and as the nume- 
-rator is invariably 1, it is omitted throughout, the denominators only 
being printed. In each instance the measurements of the common- 
sized discs are first set down; a space is then left; the small and 
large-sized discs are next noted ; and lastly the average, deduced from 
the preceding numbers, is placed beneath the line. The long dia- 
meter of the oval blood-discs is denoted by L.D. and the short 
diameter by $.D. Except when noted to the contrary, the blood 
