Bird-Caves of the Bermudas. 633 



avifauna. Their characters all go to indicate that the bird 

 was a typical Fufinus, one wherein the sternum was of the 

 sho7't variety^ as in Pufflnus creatopus ; in other words, the 

 body of the bone was not elongate, as it is in several of 

 the small existing Shearwaters in various parts oJH the 

 world. 



Taken together, the bones representing this new and 

 doubtless extinct species of Puffinus belonged to three or 

 more different individuals — a conclusion I came to after 

 carefully comparing and matching them. 



We have no evidence based upon fossil or subfossil 

 material, and no evidence based upon osteological material 

 representing existing species of Puffinus, that there now 

 exists or ever existed a typical Shearwater of this genus 

 that was as small or smaller than it : hence I have bestowed 

 upon it the specific name of parvus ; and, as pointed out 

 above, there is no doubt whatever but that the bird was 

 a true Puffinus, as all the characters of the bones repre- 

 senting it indicate this, agreeing, as they do, with but slight 

 specific variations, with those in the skeletons of its relatives 

 now in existeiice. 



jEstrelata vociferans, sp. nov. 



(Extinct.) 



Cahow, Bermudan Cahow or Noisy Petrel. 



At the time I was at work upon my memoir, there was 

 before me a large series of subfossil bones representing 

 this extinct species and many individuals of both sexes. 

 Naturally, then, a large part of my work was devoted to the 

 discussion of this now extinct species. Upwards of one 

 hundred figures on plates illustrate its osteology, while my 

 reasons are given for retaining the name yEstrelata instead 

 of the more correct one, in so far as -spelling goes, of 

 (Estrelata in use elsewhere. 



The specific name vociferans explains itself ; for this 

 extinct species, long known as the " Cahow,'^ was a very 

 noisy bird in life, judging from all the accounts we have of 

 it left us by the early writers. 



