HA\U8 AM) I'KNAItl): SOMI. ( HI IK AI. NdTK.S <)\ HIUDS. 39 



mayr (Nov. zool., l*.M)(i, 13. p. UM chticisi'd Dalinas's f«»nii, aixi \i(;\v<'(l 

 tlio st^paration as a luistakf, on tlir ground lliat the cliaractcrs giv<n 

 by Dalnijus were precisely those distingviishing the female from the 

 male i>f the S|M'cie.s, and stii^gested that the spcciin«'n.s srcii l»y Dahnas 

 were incorrectly markc<i as to sex. 



In 1917 l\>dd (Proc. Biol. soc. Washington, 30, p. ',i), on the other 

 hand, named the Colombian form Ostiuojts drriinianujf vtrlautcrus 

 supposing the Colombian bird to be blacker than the (Juianan. 

 Chapman (Hull. Amcr. nuis. nat. hist., HUT, 36, p. 24) has entirely 

 disproved this, showing that there is no ditrerence in color between 

 Colombian and Guianan specimens. He, however, noticed the more 

 chestnut tone of birds from Trinidad and the Paria Peninsula. 



We ha\e lately examined and compared a large .series from the con- 

 tinent and from Trinidad and Tobago, and while we, like Chapman, 

 cannot find any differences in specimens from Colombia and Guiana, 

 we believe that the paler coloration and castaneous upper parts, 

 especially tlu> nimp. of birds from Tobago, Trinidad, and the Paria 

 Peninsula (.tln^ latter on Chapman's authority), are constant ciiar- 

 acters, and we therefore revive the name Ostinops decumanus insularis 

 Dalmas. 



CissiLOPHA SANBLASIAXA SANBLASIAXA (Lafresnaye).« 



Pica san-blasiana Lafr.. Mag. zool., 1842, pi. 28 ("Elle vit en 

 troupes selon M. I^clancher a Acapulco et a San-Blas sur la cote 

 ouest du Mexique" — we select Acapulco). 



Type. — M. C. Z. 76,202, Lafr. coll. 5,543. Acapulco. 



Cissohpha pulchra XeLson. Auk, 1807, 14, p. 56 (Acapulco, Guerrero, 

 S. W. Mexico). 



Although Lafresnaye, in naming this species, cited "Geai de San- 

 Blas, Xeboux, Rev. zool., 1S40, p. 290, et 323," he described from his 

 own specimen and even called attention to the fact that his bird was 

 slightly different from Xeboux's. Lafresnaye's bird, the tN-pe of the 

 species, came from Acapulco as stated by Lafresnaye (Rev. zool. 

 1840, p. 323) in quoting Leclancher from whom he obtained it: " Cette 

 Pie noire et bleue Went d'Acapulco." 



Dr. E. W. Xelson, has redescribed this southern race, as Cissohpha 

 pulchra, assimiing the txpe-locality of Pica sariblasiauo to be San Bias. 

 Dr. N'^elson has kindly lent us the tx-pe of C. pulchra and a long series 

 of topot\-pes. These we have compared v^-ith more than fifty skins 

 from CoUma, Tepic, in M. C. Z. 



