48 



EINAR LÖNNBERG, B1RDS. 





N timida ptilorhyncha ptilo- 

 rhyncha [(Lcht.) Less.] 



N tim lila ptilorhyncha niajor Numida ptilorhyncha neu- 

 Hartl. tnanni Erl. 





»besonders starken und dicht 

 schwarz behaarten Hals» (Neum. 

 1904). 



»Hals mit wenig Flaum ver- 

 sehen im Geniok ein Biischel wol- 

 liger Federn» (Erl. 1905). 



in specimens from the White 

 Nile »die schwarze Halsbefie- 

 derung stärker als bei deiion von 

 Uganda» (Neum. 1904). 



»Halsbefiederung wie bei M 

 /;/. ptilorhyncha and N. pt. ma- 

 croceras (Erl. 1905). 



»Halsbefiederung geringer wie 

 bei ptilorhyncha besonders vorn 

 am Hals wenig Federn» (Neum. 

 1904). 



Hehnet (or Horn): . . . 



the typical form has »deut- 

 lichen, aber niedrigen, ziemlich 

 spitzen, nach oben gehenden we- 

 nig nach hinten umgebogenen 

 Helm» (Neum. 1904). 



»Das konische schrägliegende 

 Horn iiberschreitet niemals . . . 

 eine Länge von 1.7 cm» (Erl. 

 1905). 



charaeterized by »yölligeHelm- 

 losigkeit (Neum. 1904). 



»mittelhohes Horn auf sehr | 

 breiter Basislinie» (Neum. 1904). 



»Horn biidet einen unten brei- 

 ten, nach hinten gerichteten, 

 schmalen Höcker» (Erl. 1905). 



Wattles: 



»hellblau» (Erl. 1905). 







form (Neum. 1904). 



similar to those of N. pt. ptilo- 

 rhyncha (Erl. 1905). 



blne. 



blne. 



Nasal bristles: 



selir diinne feine Borsten» 

 (Neum. 1904). 



»kaum vorhanden öder mini- 

 mal (Neum. 1904). 



ziemlich kurz aber sehr stark 

 und kraftig» (Neum. 1904). 



»viel schwächer entwickelt, 

 wie» N. pt. somaliensis (Eiu,. 

 1905). 



It is chiefly the characteristics of the head with its appendages, and of the neck 

 which have been considered by the authors quoted, and von Erlanger says: »Die Arten 

 unterscheiden sich nur am Kopf »(!). 



A comparison of the characteristics of the different races with those of my specimens 

 will give the following result: In the specimens from Luazomela the neck is nearly naked 

 with few scattered, narrow black feathers, but of ten there is a rather thick bunch of similar 

 leathers on the hindneck just above the beginning of the normal plumage of the basal 

 parts of the neck, this is, however, not present in all specimens. 



By this characteristic the present specimens are with full certainty distinguished 

 only from N. pt. 'ptilorhyncha, as also a direct comparison of specimens proves, possibly 

 also from N. pt. major, and N. pt. neumanni and N. pt. m-acroceras but the words of the 

 different authors contradict each other. 



The hehnet of the present specimens is very variable in shape and size as the accom- 

 panying figures prove, but it is always large compressed, rising from a long base, and 

 rounded off at the top. The length of the base of the helniet of adult males measures 

 from 20 to 24 mm., in adult females from 18 to 20 mm. 



