88 
eoverts with deep brown subterminial spots, or oval drops. There 
is a peculiar notch in the first quill’s inner web, about 1°25 from 
the tip, which is very marked. The 2nd quill is the longest, 
the Ist being 0°37 shorter, the 3rd 0°5 shorter. No such strong- 
ly marked notch is observable in any of the specimens of H. 
Subbuico before me, and none is noticeable in the 2nd quill in 
this species. In ZL. Chequera again, the notch is of quite a 
different shape, and occurs in both Ist and 2nd quills; the 3rd 
quill being the longest in this latter species. Proportionally, 
the wings of Severus, and Subbuteo, are much longer than those 
of LZ. Chequera. 
Mr. Wallace tells us that this species is found in Macassar, 
Salwattee, Java, the Philippines, and most probably, occasional- 
ly in every island of the Archipelago. 
Just as this species is the local representative of the common 
Hobby in Southern Asia, so in Southern Africa, this latter finds 
its local representative in H. Cuvieri, which Mr. Gurney consi- 
ders very closely allied to the present species. 
Hypotriorchis Subbuteo (Linn.) Hobby. 
Hypotriorchis Cuviert (A. Smith.) Cuvier’s Hobby. 
These two Hobbies, though treated by Mr. Layard as belong- 
ing to the same species, are unquestionably distinct: They both 
occur in South Africa, but both appear to be rare in that region. 
H. Cuvieri described by Sir A. Smith, in 1830, (8. African 
Quarterly Journal, I. p. 392) is nearly allied to the peculiar 
Hobby of South Eastern Asia, H. Severus (Horsf.), and has 
been figured by Professor Schlegel (Nedeil. Tijdschr. I. p. 123, 
pl. 5) under the name of Falco Boschir (ef. Ibis, 1864, p. 398).” 
Myr. Blyth, in the Ibis for 1866, makes the following inter- 
esting remarks, in regard to Hypotriorchis Subbuteo, and Severus. 
“he erepuscular habits of the birds of this division, have 
now been noticed in H. Eleonoree (Ibis, 1865, p. 333). 
“ H. Severus bears just that relationship to H. Subbuteo, which 
Hirundo Cahirica bears to H. Rustica, and H. Hyperythra (of 
Ceylon) to H. Erythropygia, (Sykes, which is distinct from H. 
Daurica.) n all of these cases, the deeper coloured bird is less 
migratory, or even permanently resident. ‘The rufous-bellied 
Hobby, has not been observed northward of the Himalayahs, nor 
Hirundo Hyperythra out of Ceylon ; and while neither H. Rus- 
tica, nor H, Rufula winters in Palestine, Mr. Tristram remarks 
of H. Cahirica that a few remain on the sea coast and in the 
Ghor, all the winter (P. Z. 8. 1864, p. 443). Indeed, it would 
appear, that he observed them, in considerable numbers, during 
the winter months. (Land of Israel pp. 105, 118). It may 
be added, that Ku/co Peregrinator stands in the same relation- 
