IACHE. 259 
but we think that further investigation will show that J. lawrencti is the sole 
inhabitant of the islands and does not occur on the mainland at all. Its position as a 
distinct species will then be fully established. Little has been noted of the habits of 
this species beyond the description by Grayson! of its nest, which is as follows :— 
“ This elegant structure (7.e. the nest of I. lawrencii) I found attached to a slender 
twig and shaded with its leaves, about five feet from the ground. The situation was 
facing the sea but a few paces from the water’s edge..... Its form is cup-shaped, 
and composed of the down of the silk cotton (Eriodendron) intermingled with the 
down of other plants and spiders’ webs, the whole exterior neatly studded with 
diminutive whitish lichens; it contained two newly hatched young but little larger 
than flies.” 
B. Pileus nitenti-ceruleus aut viridi-cwruleus ; tectrices subcaudales 
fusce aut chalybee. 
4. Iache doubledayi. 
Trochilus doubledayi, Boure. P. Z. 8. 1847, p. 467. 
Circe doubledayi, Gould, Mon. Troch. v. t. 339 (Sept. 1860)”; de Oca, La Nat. iii. p. 302, fig. 45°; 
Lawr. Bull. U.S. Nat. Mus. no. 4, p. 33+; Sumichrast, La Nat. v. p. 250°. 
Iache doubledayi, Elliot, Syn. Troch. p. 235°; Salv. Cat. Birds Brit. Mus. xvi. p. 627. 
Iache nitida, Salv. & Godm. Ibis, 1889, p. 240°; Salv. Cat. Birds Brit. Mus. xvi. p. 62”. 
Supra nitenti-ceneo-viridis, pileo micanti-cwruleo-viridi: subtus nitenti-ceerulea, abdomine viridescentiore, 
tectricibus subcaudalibus brunneis; cauda chalybeo-cyanea, tectricibus mediis cinereo terminatis : rostro 
corallino, apice nigro. Long. tota circa 2°8, ale 1:9, caude rectr. med. 0°8, rectr. lat. 1-1, rostri a rictu 
0-8. (Descr. maris ex Chinautla, Mexico. Mus. Brit.) 
2 supra nitenti-viridis: subtus fusca, pectoris lateribus et hypochondriis viridi lavatis ; cauds dimidio basali 
viridi, dimidio apicali chalybeo-cyaneo, rectricibus duabus utrinque externis griseo-albo terminatis: rostro 
nigricante, mandibula, preter apicem, carnea. (Descr. femine ex Rincon, Guerrero. Mus, nostr.) 
Hab. Mexico, Chinautla (Dr. Saucerotte 2), Venta del Pelegrino, Rincon, Dos Arroyos, 
Acapulco (Mrs. H. H. Smith®), Chihuitan, Juchitan * (Sumichrast *°), Salina Cruz 
and Tehuantepec (W. B. Richardson ®). 
Bourcier’s description of this species was based upon a specimen supposed to have 
come from the Rio Negro!, ‘This type is now in the American Museum of Natural 
History and was described by Mr. Elliot in his ‘Synopsis’; another, according to Gould, 
is in the Loddiges Collection 2; and a third, the only one we have seen closely agreeing 
with the description, is in the British Museum. ‘The last named was figured by Gould 
in his ‘ Monvgraph of the Trochilide’ and was obtained by him from Dr. Saucerotte, 
who had it from Chinautla in the Mexican State of Puebla. Compared with the types 
of I. nitida this species as represented by Gould’s specimen has a greener crown, and 
the under tail-coverts are brown instead of steel-blue, but we do not feel certain whether 
these differences are not due to the age of the specimens compared. 
