38 billktin; miski m ov (omi'akmivk zoiiLom. 



I -af resnaye's two CH)types do not l)elonjj to tlu' species witli which 

 his name alhitrnt j>orn hiw> always been associated. Init are perfectly 

 characteristic examples of the Mexican oplithnlinicus of Du Bus, and 

 probably cjune from sotithcastcrn Mexico. In many instances 

 Lafresnaye did not know whether his specimens were from Coloml)ia 

 or Mexico, and wc find numerous labels writttMi by him which say, 

 "C'olombie ou Mexiqiie." At some date later than his description of 

 Tachyphoniis alhiUmiMjra, Lafresnaye himself thought his bird identi- 

 cal with Arrcnion ophthalntlciwi and wrote a second lal)cl for his speci- 

 mens to that etfect. 



Chapman (Bull, .\jner. mus. nat. hist., 1017, 36, p. CIS) while work- 

 ing on the Colombian forms of Chlorospingus, appears to have been 

 the first ornithologist of the present generation to detect the absolute 

 discrepancy l)etween Lafresnaye's description and the Colombian 

 bird to which the name had universally l)cen applied. He therefore 

 named the Colombian form Chlorospingus albitempora nigriccps. 



We suppose the type of Chlorospingus flaviirntris Sclatcr is in the 

 Mu.seum of Cambridge University; it shoidd be examined and com- 

 pared because if, as supposed Ijy Salvin, it represents what was known 

 as C. albitempora Lafr., it bears the earliest date of any of the sub- 

 sp)ecies. Trinidad, whence it was supposed to come, is undoubtedly 

 an error, and the .sul)specics to which it belongs must be proved before 

 a new arrangement of tiie fonns of this species can be made. 



Cnemoscopus, gen. nov. 



Type. — Arremon rnhrirostris Lafresnaye. 



Characters. — Similar to Hemispingus in form and in shape of bill; 

 legs much shorter — wing four and one quarter times the length of 

 the tarsus (three and one half times in Hemispingus); coloration 

 decidedly different from any of the species in the genus Hemispingus, 

 the red bill, gray head, and yellowish green body l)eing very distinc- 

 tive. Except for the more slender, rcfl bill, the general appearance 

 suggests the genus Eucometis. 



OsTi.NOPs DECUMANUS iNSULARis Dalmas. 



In 1900 (Mem. Soc. zool. France, 13, p. 137) Count Dalmas named 

 the Great yellow-tail of To))ago, basing his separation upon the smaller 

 size and paler castaneous rump of the island fonn. In 1906, Hell- 



