TWENTY-SECOND ANNUAL REPORT 101 



esting models and mimics- among- insects were taken, with full 

 notes, and an interesting series of paintings begun, depicting 

 the extremes of color change in lizards. Remarkable success was 

 attained in this work by the use of chloroform, the reptiles ex- 

 hibiting radical changes of color and pattern at a certain stage 

 of anaesthetic relaxation. One of the most valuable acquisitions 

 was a set of ninety paintings and sketches of living zoological 

 subjects, made by Miss Cooper and Mr. Tee Van, both of whom 

 volunteered their services for this purpose. 



Several thousand specimens, ranging from mammals to in- 

 sects, were collected and brought back, eighty-five of them being 

 alive. These specimens were as follows : 



800 Arachnida 20 Amphibians 



3,880 Insects 51 Reptiles (6 alive) 



30 Fish (all alive) 98 Birds (42 alive) 



7 Mammals (3 alive) 



Among the most important and interesting additions to the 

 collection of the Zoological Park were a young tapir in the striped 

 pelage, an Imperial Amazon parrot, (Amazoua impeiialis) , and 

 a silky ant-eater^ (Cijclotcs didactiilus) , the latter brought north 

 for the first time to any American collection of living animals. 

 A black-throated cardinal, {Paroaria jugulari^) , was new to our 

 series of these handsome birds. Four toucans, a hawk-headed 

 parrot, {Deroptyu^ accipitrinjis accipitrhnis) , a spotted cavy and 

 numerous small birds completed the shipment. 



In addition to the work at the Guiana Station, collections 

 were made on nine West India Islands, during stops of the 

 steamer. 



During the year 1917 the following articles appeared in con- 

 nection with the Tropical Research Station : 



A Naturalists' Tropical Laboratory, by Theodore Roosevelt, 

 Scribners, January. 



The Pomeroon Trail, by William Beebe, Atlantic Monthly, 

 January. 



A Hunt for Hoatzins, by William Beebe, Atlantic Monthly, 

 February. 



With Army Ants "Somewhere" in the Jungle, by William 

 Beebe, Atlantic Monthly, April. 



