360 TROCHILID. 
l". Cauda fere normalis, rotundata aut furcata. 
Kk". Cauda rotundata, albo terminata; plume gulares laterales elongate. 
ATTHIS. 
Trochilus, §. Atthis, Reichenbach, Aufz. d. Col. p. 12. 
Atthis, Gould, Intr. Troch. p. 89; Salv. Cat. Birds Brit. Mus. xvi. p. 411. 
In Atthis the tail, though short, is nearly normal and rounded, the lateral rectrices 
being of full width and tipped with white. The lateral gular feathers are elongated 
and wholly glittering rosy red with a slight purple tinge. 
Two closely-allied species inhabit Southern Mexico and Guatemala. ‘They resemble 
each other in colour, but may be distinguished by the shape of the outermost primary, 
which in the northern form (A. heloise) is attenuated towards the extremity. 
1. Atthis heloisz. 
Ornismya heloisa, Less. & Delattre, Rev. Zool. 1839, p. 15°. 
Selasphorus heloise, Gould, Mon. Troch. iii. t. 141 (Oct. 1854) *; Scl. P. Z.S. 1859, p. 386°; 1864, 
p. 177*; de Oca, La Nat. i. p. 19, t. —’. 
Tryphena heloise, Scl. P. Z. 8. 1858, p. 297°; 1859, p. 367’. 
Atthis heloise, Gould, Intr. Troch. p. 89°; Dugés, La Nat. i. p. 141°; Villada, La Nat. u. 
p. 857”; Ridgw. Pr. U.S. Nat. Mus. i. p. 10"; Salv. Cat. Birds Brit. Mus. xvi. p. 411”. 
Trochilus heloisa, Herrera, La Nat. (2) i. p. 822”. 
Supra nitenti-aureo-viridis : subtus gula micanti-rosaceo-rubra purpureo leviter lavata, pectore, abdomine medio 
et tectricibus subcaudalibus albis, hypochondriis pallide cinnamomeis maculis discalibus aureo-viridibus 
notatis ; caude rectricibus mediis dorso concoloribus, lateralibus ad basin cinnamomeis, apicibus albis fascia 
subterminali lata nigra: rostro nigro. Long. tota circa 2°9, ale 1:4, caudee 0-9, rostri a rictu 0°55. 
Q capite summo obscuriore, gula tota alba maculis discalibus aureo-viridibus notata. (Descr. maris et femine 
ex Cuesta de Misantla (Jalapa), Mexico. Mus. nostr.) 
Hab. Mexico, Guanajuato (Dugés®), Sierra de San Luis Potosi (W. B. Richardson 1), 
Cofre de Perote (MU. Trujillo”), Jalapa (Delattre}, de Oca®", C. F. Hoge, M. Tru- 
jillo 12), Cuesta de Misantla (MZ. Trujillo '*), Cordova, Orizaba, San Andres Tuxtla 
(Boucard), Valley of Mexico (White*+, Villada 1°, de Oca®, Herrera’*), Patzcuaro 
(Dugés°), Tepic(W. B. Richardson *), Totontepec (Boucard *), Oaxaca (Boucard °, 
Fenochio }*). 
Delattre discovered this species during his sojourn at Jalapa!, where it has since been 
found by nearly every collector who has visited that district. 
Most of our specimens came from this neighbourhood, but the species ranges far 
beyond the limits of the State of Vera Cruz, for we have received specimens from the 
Sierra de San Luis Potosi in Central Mexico, from Tepic near the west coast, and also 
from the State of Oaxaca. 
Villada says !° that it is only found in the Valley of Mexico in the months of June 
and July, seeking its food chiefly from the flowers of Lythrum vulnerarium. 
