488 Mr. J. Gould on two new 



above, black. The cheeks behind the eyes are considerably 

 swollen. Thorax a very little broader than the head, very 

 convex and arched in front, depressed and transversely im- 

 pressed at the base, where it is also a little constricted ; with 

 a black band in front, quadridentate posteriorly, and with a 

 second narrower curved band behind the middle, bidentate 

 behind in the middle, touching the lateral projection of the 

 anterior band and nearly uniting with it at the apex ; the 

 anterior band is thickly and very strongly punctured. Elytra 

 one fifth broader than the thorax, flat on the back, perpendi- 

 cularly deflexed at the sides of the shoulders, thickly and 

 strongly punctured ; each elytron has a raised oblong -ovate 

 spot in the middle of the base, with a brown streak under the 

 shoulder and two oblique dusky streaks before the middle, 

 the second one turned backwards at an acute angle on the 

 side ; the apex is very acuminate, pitchy, with a strong ridge 

 along the outer margin, continued anteriorly by an oblique 

 paler yellow line. There is a black band across the meta- 

 sternum ; and the episterna are bordered in front and behind 

 with black. There is a spot at the side of the basal segment 

 of the abdomen, a complete band across the second and third 

 segments, and a spot in the middle of the posterior femora, 

 all black. 



Hab. Sarayacu. 



Alloesia bicolor, n. sp. 



Nigra, capite thoraceque rufis, autennis flavis ad apieem fuscis? ; 



elytris cyaneis aaneo tiuctis, creberrime sat fortiter punctatis. 

 Long. 6|-9 lin. 



Resembles A. chlorophana in form and appearance. The 

 raised parts of the thorax are smooth, the impressed portions 

 are strongly punctured ; at the base there is a triangular 

 purple spot. Scutellum black. Elytra rather strongly and 

 very densely punctured ; blue or blue tinted with green. The 

 first five or six joints of the antennae are yellow, the apical 

 joints fuscous. The form of the thorax is that of the variety 

 nitidipennis, Chevr., having a small obtuse tubercle at the 

 side. 



Hab. Chiguinda. 



XLV. — Description of two new Humming-birds from Bolivia. 

 By John Gould, F.R.S. 



Mr. Clarence Buckley, who has distinguished himself by 

 his zoological researches in South America, passed, as is well 



