''fj 



.•er.t,4!0 • pROGNE. '"^-tTvaix 



2n 



from Atlantic to Pacific, as well as from Cape St. Lucas. Some 

 special localities are as follows : — • • - > t . w . (■ ,jii> 



(1,12,1.) 7.80; 16.00; 5.92. (1,596.) 8.16; 16.60; 6.00. 



Progne cryptoleiica. ■' 



Prngne cri/i>toleura, Baird. 



llinmdn purpurea, D'Orb, Sagra'a Culia, Ois. 1840, 94 (excl. syn.). — 

 Progne purpurea, Cab. Jour. ISMJ, 3. — Gpndlach, Cab. Jour. 18G1. 



fla6. Cuba, and Florida Keys ? (Perbaps Bahamas.) 



(No. 34,242, % .) Color much as in P, suhls — rich stsel blue, with purple 

 or violet gloss ; the wings and tail, however, much more decidedly glossed, and 

 with a shade of greenish. The feathers around the anus and in the anterior 

 portion of crissum with dark bluish down at base, pure snowy white in the 

 midiile, and then blackish, passing into the usual steel blue. The white is 

 entirely tioncealed, and its amount and purity diminish as the feathers are 

 more aud more di:<tant, until it fades into the usual gray median portion of 

 the feather. The usual concealed white patch on the sides under the wings. 



(No. 34,242.) Total length, 7.60; wing, 5M; tail, 3.40; perpendicular 

 depth of fork, .86; difference between 1st and flth primary, 2.75; length of 

 bill fiom forehead, .5f), from nostril, .34; along gape, .86 ; width, .58 ; tarsus, 

 .53; middle toe and claw, .79 ; claw alone, .24 ; hind toe and claw, .52 ; claw 

 alone, .25. 



Tills species has a close external resemblance to P. subis, for 

 wliich it has usually been mistaken. It is of nearly the same size, 

 but tlip feet are disproportionately smaller and weaker ; while the 

 wings are shorter, ihe tail is as long and more deeply forked ; the 

 feathers considerably narrower, and more attenuated (the outer .40 

 wido, instead of .40). The colors above are more brilliant, and ex- 

 tend more over tlie greater wing coverts and lining of wings, while 

 the ([uillf; and tail feathers have a richer gloss of purplish, changing 

 to greeiii.sh. An apparently good diagnostic feature is the concealed 

 pure white of the feathers about the anal region, replaced iu subis by 

 grayish, rarely approximating to whitish. - • ; , *• 



. ■■'*„v 



