GTMNOSTINOPS. 439 



2. Gymnostinops guatemozinus. (Tab. XXXII.) 



Ostinops ffuatemozinus, Bp. Compt. Rend, xxxvii. p. 833'; Cass. Pr. Ac. Phil. I860, p. 138 'j Scl. 



& Salv. P. Z. S. 1879, p. 508 ^ Scl. Ibis, 1883, p. 149 \ 

 Cassicus guatemozinus, Cass. Pr. Ac. Phil. 1867, p. 71 °. 

 Gymnostinops guatemozinus, Scl. Cat. B. Brit. Mus. xi. p. 314°. 



Nigerrimus, crista verticali elongata, nigra ; dorso medio, alarum teetricibus, supraoaudalibus et crisso saturate 

 castaneis ; eauda flava, reotricibus duabus mediis abbreviatis, nigris ; rostro nigro, apice flavo-aurantiaco, 

 pedibns nigris. Long, tota 19-5, alae 9-6, oaudse 7-6 (rectr. mad. 5-3), rostri a riotu 2-7, tarsi 2-2. 



? mari similis, sad multo minor. Long, tota 15-5, alee 8-0, caudae 6-5 (rectr. med. 4-4), rostri a rictu 2-0, 

 tarsi 1-8. (Deser. maris et feminse ex Eemedios, Colombia. Mus. nostr.) 



Hah. Panama, Turbo ( Wood) 2 s.— Colombia 1 ^ 4 s 



The type of this beautiful species was obtained by M. Fontanier in the valley of the 

 Magdalena river, and sent to the Paris Museum, where it was described by Bonaparte 

 in 1853 1. Six or seven years afterwards, Mr. C. J. Wood, who accompanied Lt. Michler's 

 exploring expedition to Darien, secured a single male specimen at " Camp Abert," on 

 the banks of the Truando river, on our extreme southern border. We have no record 

 of its occurrence further northwards, and along the line of the Panama Railway the 

 allied G. montezumoe is found in plenty. 



The late T. K. Salmon met with G. guatemozinus during his stay at Eemedios, a 

 village on the mountains dividing the Cauca and Magdalena valleys, situated at an 

 elevation of 2360 feet above the sea, on the banks of the Ite river, an affluent of the 

 Magdalena. Here he obtained the eggs of this species, which are pale pinkish white, 

 sparsely spotted with large red-brown spots. The iris of the living bird is blue ^. 



In comparing this species with G. montezumoe, the form of the tail is noticeable, the 

 middle feathers being very much shortened. At first sight it appears as if they 

 were not fully -developed ; but this is not the case. In all the species of Ostinops, 

 Gymnostinops, and in Eucorystes the central tail-feathers fall short of the longest, but 

 not nearly so much so as in G. guatemozinus. 



We have figured one of Salmon's specimens, a male, 



OSTINOPS. 



Ostinops, Cabanis, Mus. Hein. i. p. 187 (1851); Sclater, Cat. B. Brit. Mus. xi. p. 315. 



Mr. Sclater leaves eight species in Ostinops, after removing four and placing them 

 in Gymnostinops. Only the most widely-ranging of these eight, viz. 0. decumanus, 

 occurs within our limits, in the State of Panama ; the rest are spread over the greater 

 part of the tropical forests of South America, our 0. decumanus being the only species 

 found in South-eastern Brazil. 



Ostinops is very like Gymnostinops in general structure and the colour of its plumage, 

 but may readily be distinguished by the space beneath tlie eye being fully feathered up 

 to the base of the mandibular sheath. 



