Vol. XXXVII 1 



1920 



Miller, Genera of Ceryline Kingfishers. 427 



144 mm). Clavicle with no distinct process near proxi- 

 mal end; coracoid with an upstanding process at inner side 

 of foot; spina sterni externa shorter; projection on outer 

 edge of preilium conspicuous; lacrymal less swollen, reach- 

 ing maxillary; tendinal slip to hallux arising at end of ten- 

 don (Megaceryle) 

 c Culmen more curved and with thicker tip; crest larger; 3rd 

 and 4th toes more extensively united. 



Megaceryle lugubris 

 Megaceryle guttulata 

 cc Culmen straighter and with more slender tip; crest smaller, 

 3rd and 4th toes less extensively united. 

 d Bill stouter, the culmen nearly straight, the tomial ser- 

 rations distinct; crest smaller; 10th primary nearer 6th 

 than 7th (rarely exceeding 6th). Male with rufus in 

 plumage; female with under wing-coverts rufous; larger 

 (wing not less than 180 mm). 



Megaceryle maxima 

 Megacryle torqnata 

 dd Bill more slender, the culmen distinctly curved, the 

 tomial serrations less distinct, often obsolete; crest 

 larger; 10th primary nearer 7th than 6th (always 

 decidedly longer than 6th). Male with no rufous; female 

 with under wing-coverts white; smaller (wing not more 

 than 170 mm). 



Megaceryle alcyon. 

 bb No vertical crest; bill more slender, its rami overlapt by inter- 

 ramal plumage, the tomia entire; tarsus and especially hal- 

 lux longer and more slender; tail less rounded, rectrices 

 broadened and obtusely rounded terminally; plumage soft 

 and silky, wholly black and white, with large white areas 

 in scapulars, remiges and rectrices; smaller, (wing less than 

 144 mm). Clavicle with a distinct process near proximal 

 end; coracoid with no upstanding process at inner side of 

 foot; spina sterni externa longer; projection on outer edge 

 of preilium very small; lacrymal much swollen, not reach- 

 ing maxillary; tendinal slip to hallux arising above end of 



tendon. (Ceryle) Ceryle varia. 



Eutaxic; acrotarsium not scutellate; anterior toes longer; upper 

 parts glossy bronze-green; sexes differing in color of axillars; 

 maxillary bone gradually and somewhat less broadly expanded. 

 Other skeletal characters and plantar tendons as in Ceryle varia. 

 (Differing further from Megaceryle in absence of vertical crest; 

 entire tomia, and longer tarsus and hallux; and from Ceryle in 

 more extensively fused anterior toes, shorter wing-tip, tenth pri- 

 mary shorter than sixth instead of longer; more rounded tail, 

 and presence of rufous in plumage). (Chloroceryle). 



