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ART. XI. — Descriptions of three nerv species of the genus Icterus, {Briss.); specimens 

 of which are in the Museum of the Academy of Natural Sciences of Philadelphia. 

 By John Cassin. 



ICTERUS, Brisson. 

 PL 16, fig. 1. 



I. AiACULi-ALATUS, Hobis. — Capite toto, dorso, alis et cauda, nigris ; hoc colore ad pectus, ut in cseteris hujus 

 generis speciebus, extendente. Scapularibus, alarum tectricibus minoribus, et corpore toto subtus a 

 pectore ad caudam, flavis ; hoc colore in pectore et scapularibus intensiore. Alarum tectricibus 

 majoribus maculis apicalibus, albis, subrotundis, fasciam in alam conspicuam facientibus. Remigibus 

 primariis, pogonio externo, prope apicem, atlenuatis, et ubi coarctantur, extus albo-marginatis. 



Lon. tot. exuvise, ab rostri apice usque ad finem caudae 74 poll., alse 3 8-10, caudce 3 4-10 poll. 



Hah. Mexico ; prope Vera Cruz. 



Whole head, back, wings and tail black ; this colour extending to the breast, as in other species of this 

 genus. Shoulders, lesser wing coverts, and entire under parts of the body, from the breast to the tail, 

 yellow, darkest on the breast and shoulders. Greater wing coverts with rounded white spots at their 

 tips, forming a conspicuous bar on the wing. External webs of primaries attenuated near their tips, 

 and at the point of attenuation edged (externally) with white. 



Total length of skin from tip of bill to end of tail 74 inches, wing 3 8-10, tail 3 4-10 inches. 



Hah. Mexico, near Vera Cruz. 



This species resembles no other which I have met with, and may readily be 

 recognized by its conspicuous and pecuhar white bar on the wing, formed by large 

 white spots at the tips of the greater coverts. Upon examination it will be found 

 that these spots are on the outer webs only. 



I have seen one specimen only of this species, which belonged to the Rivoli 



collection. 



PI. 16, fig. 2. 



I. AURicAPiLLUs, nobis. — Capite supra nitide aureo flavo. Persona vittam frontis formante, oculos in totum 

 coraplectente, ad pectus excurrente, nigra. Dorso, alis et cauda eodem colore. Scapularibus, 

 uropygio, caudfe tectricibus superioribus, et corpore toto subtus (a pectore) flavis. Alis et corporis 

 partibus ca2teris prorsus sine albo. 



Long. tot. exuviae, ab rostri apice usque an finem caudae 7 poll., alee 3 6-10, caud^ 34 poll. 



Hah. Mexico et America meridionali. 



Head above bright golden yellow. Mask forming a frontal band, fully including the eyes and extending 

 to the breast, black, which is also the colour of the back, wings, and tail. Shoulders, rump, upper 

 tail coverts, and entire under surface of the body, (from the breast,) yellow. No white on the wings 

 or on any other part of the body. In a specimen which is probably that of a young bird, the black 

 of the chin is mixed with yellow ; no white whatever on any part of the plumage. 



Total length from tip of bill to end of tail, about 7 inches, wing 3 6-10, tail 34 inches. 



Hnh. Mexico and South America. 



