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Zoological Society 



reference to the cocoon which I herewith send for your examination, 

 the end covering the nose of the animal is rather pointed, and has 

 an aperture about the size of a pin's head, which I have no doubt 

 enables the animal to breathe during its state of torpor. The ani- 

 mal when in its case is coiled nearly twice round, and I observed in 

 each of the blocks of clay a small hole about the size of a mouse- 

 hole, which was quite smooth on the inside, as though the animal 

 had crept through it. " I am, dear Sir, 



" Faithfully yours, 



"A. D. Bartlett." 



Cocoon of the Mud-fish (Lepidosiren annectens) . 



A. Breathing-hole at nose. 



B. A thin partition. 



C. An attaching band that passes through the space 



where tlie animal bends, as in a, fig. D. 



Fig. D. 



D. A sketch of the animal in the cocoon. 

 a. The position of the band C. b. The head, nose and eyes. 



July 8, 1856.— Dr. Gray, F.R.S., in the Chair. 



On some New Species of Birds collected by M. Auguste 

 Salle in Southern Mexico. By Philip Lutley Sclater, 

 M.A., F.Z.S. 



1. Certhiola mexicana. 



Nigricanti'fusca : capite, alls caudaque nigris : superciliis et specula 

 alari albis : uropygio flavicante : gutture cinereo : ahdomine 

 fiavo ; crisso albidiore : rectricibus extimis alba terminatis. 

 Long, tota 3-8, alse 2*1, caudse 1*2. 



Salle, no. 114. Some of the various local races of Certhiola fia- 

 veola certainly show such differences as entitle them to specific sepa- 

 ration. The present bird does not appear to be quite the same as 

 any of the nine given by Prince Bonaparte in his * Notes Orn.' p. 51. 



