210 BARBOUR: ZOOGEOGRAPHY. 



During a part of the summer of 1910 (August 17 to September 25) Messrs. 

 G. M. Allen and C. T. Brues worked at Grenada in the interest of the Museum 

 of Comparative Zoology. In view of the fact that in several branches the Mu- 

 seum already possessed adequate collections from this island, special efforts 

 were made to collect only the most interesting and little-known elements in 

 the fauna. Thus Dr. Allen discovered the armadillo, long known by hearsay 

 only, which has proved to belong to a new race. He found besides several bats, 

 either new species, or others of special interest. No attempt was made to do any 

 marine collecting. Only few birds were wanted; and concerning these a short 

 paper has been published (Barbour, Proc. Biol. soc. Wash., 1911, 24, p. 57-60). 

 Mr. Brues devoted himself particularly to the insects; and, as a result, some fine 

 material was procured. Prof. W. M. Wheeler has already written upon the ants 

 (Bull. M. C. Z., 1911, 54, p. 167-172). Of more importance from a zoogeo- 

 graphical point of view was the finding, by both Allen and Brues, of specimens 

 of a new species of Peripatus (Brues, Bull. M. C. Z., 1911, 54, p. 303-318). No 

 Peripatus had previously been known from Grenada; and its close affinity with 

 species in Trinidad and Guiana, together with the distinctness due to its isolated 

 island life, make it important evidence, first, that it was not brought to Grenada 

 by human agency, or otherwise fortuitously; secondly, that Grenada has never 

 been completely submerged since its first separation from South America on the 

 one hand and Antillea on the other. The species is extremely rare, and its dis- 

 tribution is very closely confined to a small highland area of virgin forest in the 

 middle of the island. It does not, so far as their careful collecting goes to prove, 

 ever occur in the low, cultivated lands, or in the Botanic gardens. 



Dr. Allen and Mr. Brues made important archaeological collections, so 

 that the trip was a most successful one. 



It has already been mentioned that during the cruises of the Blake Mr. 

 Alexander Agassiz was accompanied by Mr. Samuel Garman. After their 

 return to Cambridge, Garman published his well-known series of papers dealing 

 with the reptiles and amphibians of the various islands. Considering the fact 

 that the time on shore was always limited to the short stay while the ship was 

 in port, the collections are a monument to Mr. Garman's prodigious industry. 

 But more important than the gathering of the material was the advance in 

 method he made in studying it. He was the first to recognize that the various 

 species existing in the Antilles did not occur scattered in a perfectly reasonless 

 way^upon various islands; but rather that each island possessed a fauna with 

 certain well-marked features, and usually as well with well-marked local species 



