82 BULLETIN 50;, UNITED STATES NATIONAL MUSEUM. 



MIMOCICHLA ARDOSIACEA ALBIVENTRIS Sclater. 

 VERRILLS THRUSH. 



Similar to M. a. ardosiacea and M. a. portoricensis , but with shorter 

 and more rounded wing, longer and more slender tarsi, paler under 

 parts, with abdomen more extensively white (the white more or less 

 tinged with buff), and white of rectrices much more extended.*^ 

 Young in fii'st plumage differing from that of M. a. ardosiacea and 

 M. a. portoricensis in having the under parts strongly tinged with 

 buff, the thighs almost cinnamon-buff, and the under wing-coverts 

 extensively cinnamon-colored terminally. 



Adult male. — Length (skin), 255; wing, 120; tail, 114; exposed 

 culmen, 23; tarsus, 39; middle toe, 22.^ 



Island of Dominica, Lesser Antilles. 



Mimocichla ardesiaca albiventris Sclater, Proc. Zool. Soc. Lond., 1889, 326, in 



text (Dominica, Lesser Antilles). — Cory, Cat. Birds W. I., 1892, 122, 157 



(Dominica). 

 Mimocichla ardesiaca (not Turdus ardosiaceus Vieillot) Sclater, Proc. Zool. Soc. 



Lond., 1889, 326 (Dominica). 

 Mimocichla albiventris Allen, Auk, viii, July, 1891, 317, in text (crit.). — Cory, 



Cat. West Ind. Birds, 1892, 19, 132 (Dominica). 

 [Mimocichla] albiventris Sharpe, Hand-list, iv, 1903, 116. 

 Mimocichla verrillorum AhL^N , Auk, viii, no. 2, Apr. 1891, 217 (Lasswa, Dominica, 



Lesser Antilles; coll. A. H. and G. E. Verrill), 317 (crit. nomencl.). — Verrill, 



Trans. Conn. Acad. Sci., viii, 1892, 347, pi. 27, fig. 3 (Lasswa, Dominica; 



crit.). 



MIMOCICHLA PLUMBEA (Linnaeus). 



BAHAMAN THRUSH. 



Similar to M. rubripes schistacea, but with under tail-coverts and 

 anal region slate-gray, like rest of under parts, and white of chin and 

 malar region more restricted. 



Adult male. — Above plain slate color; wings and tail black, the 

 former with broad bluish slate-gray edgings, almost concealing the 

 black in the closed wing, except on tertials, and terminal portion of 

 primaries, primary coverts, and alula?, where the bluish gray edgings 

 are much narrower; outer webs of four middle rectrices with basal 

 portion partly slate color; inner webs of lateral rectrices extensively 

 white (this more restricted toward middle rectrices), the correspond- 

 ing portion of outer web gray; lores, suborbital region, and whole 



a Having only one specimen for comparison, and that in very much abraded plum- 

 age, I am unable to give the characters of this form with precision. In the specimen 

 examined the white on inner web of the lateral rectrix extends 52 mm. from the tip, 

 the maximum in a large series of the other two forms being about 10 mm. less. A 

 specimen in first plumage is very different from the corresponding stage of the two 

 more northern forms, as pointed out above. 



6 Measurements of an adult male as given liy Dr. J. A. Allen (Auk, viii, 1891, 217), 

 converted into millimeters, are as follows: Length (skiii), 255.5; wing, 116.8; tail, 

 114.3; exposed culmen, 21.6; tarsus, 38.1. 



