( 9) 



As will be seen from (1k' above, tlie speciineiis tVimi Parii, on the average, 

 have slightly shorter bills, but some of them are not ditfereiit in this respect from 

 Cayenne skins. 



Distribution : Surinam, (Jayenne, Brit. Guiaiia, westwards through the Orinoco- 

 delta along the north coast of Venezula as far as Puerto Tubello, southwards 

 extending to Para on the mouth of the Amazons. 



(6) Ci/aHcr/M'g caerulea microrhijncka (Berl.) 



Coereba cui-nilen mierorhyncha Berlepscli, Jmnn. J', (hii/th. 1.SS4, \k '^^~ 

 (Bucaramanga). 



d ad. This form differs from the tyjiical one by having the anterior ])arf 

 of the crown as well as the cheeks of a much clearer and paler azure blue ; the 

 rest of the pileum is also brighter blue. Bill slender and short, sometimes even 

 shorter than in ' '. c. crtrruliM. 



20 Bogota skins . . Wing .56— 58 ; tail 28 —31 ; bill 18— lOAmm. 



1 from Jlerida, W. Venezuela „ 57 ; „ 28i ; ,, 10 ,, 



2 „ Beni, E. Bolivia . „ 58i : „ 3U ; „ 17i 

 Distribution : C!olonibia (Bucaramanga, Bogota coll.) ; Merida in X.W. 



Venezuela; thence through the Upper Amazonian region of East Ecuador and 

 E. Peru to N.E. Bolivia. 



(c) Cyanerpes caerulea cherriei Berl. & Hart. 



JS'or. Zool. ix. 09112) p. 10 (Munduapo, Upper Orinoco). 



i ad. exactly like that of No. 2, but consideriilily smaller, with the bill si ill 

 shorter and more slender. 



Two males (types) measure : Wing 52— 5o ; tail 2(J — 2(U ; bill 10 — 17 mm. 



Distribution, known only from the type locality : Munduapo, Upper Orinoco. 



{il) CijaiK'rpes cacndi:u triiiifotin (Bonap.) 



5 ad. Differs from No. 1 in its ranch longer and stronger bill, and in having 

 no trace of the light azure blue tinge on the front of the head, which is dark 

 bine like the occiput. 



Fifteen S ad. measure : wing, 58-50 ; tail about 3o ; bill, 2;H— 25 mm. 



Distribution : A])pareutly confined to Trhi'ukul. Also found in the so-called 

 "Orinoco-delta" collections, but their exact locality is, of course, not known. 

 Mr. Andre, however, collected in the Orinoco delta another form (cfr. sub a). 



14. Cyanerpes cyanea (Linn.) 



Certliia cyaiicu Liuuaous, Si/st. Nat. xii. i. (17G6) p. 188 (e.x Edwards, Urisson, etc. — Vfv Hx 

 Surinam (ex Edwards, whom Linnaeus quotes first) as the typical locality). 



6 c? ad., 1 (? jr. and 1 ? from Valencia, iii. ; 1 (^ ad. Seelet, iv. ; 7 r( ad. 

 audi ?,raiiaro, iii. and iv. ; 1 ?,Aripo, l8t)ii feet elevation, v.: Id ad. from 

 Savannah Grande, collected by Dr. Percy Kendall. 



In the length of the bill this series agrees best with specimens from Cayenne, 

 and Guanoco in the Orinoco-ilelta. Two c? c? from Toliago are exactly alike. 

 The birds from the interior of British (luiana apjicar to be referable to the same 

 form, although some specimens have very short bills. A series from Cumana 

 and San Esteban, as well as a specimen from Ejido, however, certainly represent 

 a different form, having the bill very much longer. In the so-called " Orinoca- 

 delta" collections, both forms occur, hence it seems that these skins come from 

 different places. 



The long-billed form from N. Venezuela is evidently entitled to the name 



