lACHE. 259 



but we think that further investigation will show that /. lawrencii 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 i of its nest, which is as follows :— 

 " This elegant structure (^. 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." 



/3. Pileus nitenti-ccBruleus aut viridi-ccendeus ; tectrices subcaudales 



fuscoe aut chalyheoe. 



4. lache doubledayi. 



Trochilus doubledayi, Bourc. P. Z. S. 1847^ p. 46'. 



Circe doubledayi, Gould, Mon. Troch. v. t. 339 (Sept. 1860) ' ; de Oca, La Nat. iii. p. 302, fig. 45 ' ; 



Law-r. Bull. U. S. Nat. Mus. no. 4, p. 33 * ; Sumichrast, La Nat. v. p. 250 '. 

 lache doubledayi, Elliot, Syn. Troch. p. 235 " ; Salv. Cat. Birds Brit. Mus. xvi. p. 62 ' . 

 lache nitida, Salv. & Godm. Ibis, 1889, p. 240 " ; Salv. Cat. Birds Brit. Mus. xvi. p. 62 '. 



Supra nitenli-asneo-viridis, pileo micanti-caeruleo-viridi : subtus nitenti-oeerulea, abdomine viridescentiore, 

 tectricibus subcaudalibus brunneis ; eauda chalybeo-cyanea, tectricibus mediis cinereo terminatis : rostro 

 corallino, apice nigro. Long, tota circa 2-8, alae 1'9, caudae rectr. med. 0-8, rectr. lat. l-l, rostri a rictu 

 0*8. (Descr. maris ex Chinautla, Mexico. Mus. Brit.) 



$ supra nitenti-viridis : subtus fusca, pectoris lateribus et hypochondriis viridi lavatis ; caudae dimidio basali 

 viridi, dimidio apicali chalybeo-cyaneo, rectricibus duabus ulrinque externis griseo-albo terminatis : rostro 

 nigricante, mandibula, praster apicem, carnea. (Descr. feminse ex Eincon, Guerrero. Mus. nostr.) 



Hah. Mexico, Chinautla {iJr. Saucerotte ^), Venta del Pelegrino, Rincon, Dos Arroyos, 

 Acapulco {Mrs. H. H. Smith ^), Chihuitan, Juchitan ^ {Sumichrast ^ ^), Salina Cruz 

 and Tehuantepec ( W. B. JSichardson ^). 



Bourcier's description of this species was based upon a specimen supposed to have 

 come from the Kio 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 ^ ; 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 ' Monograph of the Trochilidse ' and was obtained by him from Dr. Saucerotte, 

 who had it from Chinautla in the Mexican State of Puebla. Compared with the types 

 of /. 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. 



