602 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 48. 



males of Metal eptobasis, but neither of us were able to find the 

 females, though we went some distance into the woods in several 

 directions. When papering this material a unique male of a very 

 distinct species was detected; and later study of the ' collection 

 reveals another species, represented by 3 males. This last species 

 is also represented by a single male from British Guiana. Thus of 

 the 70 specimens of Metahptobasis taken about this little swamp in 

 Trinidad, 66 belong to a species (maniearia) not known elsewhere; 

 3 belong to a very closely related species (mauritia) known also from 

 British Guiana ; and the unique (brysonima) is more closely related 

 to bovilla, known from Guatemala and Nicaragua, than to any other 

 species. In this connection attention may be called to the fact that 

 2 species of the genus were added to the known dragonfly fauna of 

 Trinidad by our efforts in collecting a very large series of what, at 

 the time, we presumed was one species. Moreover, on the second 

 day Mr. Rainey collected a unique male of another genus, which 

 would not have been found but for his careful search for Metalepto- 

 basis 



METALEPTOBASIS BOVILLA Calvert. 



Hitherto known from a single male from Nicaragua and a single 

 female from Guatemala. The female is in my collection. The cap- 

 ture of another male in Guatemala indicates that Doctor Calvert 

 was correct in associating the 2 specimens before him. I caught this 

 male on June 23, 1909, in the swampy palm woods on the left side 

 (as one approaches Puerto Barrios) of the railroad track just back 

 from Puerto Barrios. It was clinging to a vine several feet from the 

 ground. No others were seen, but the careful search, which later 

 experience has shown necessary, was not made. 



METALEPTOBASIS BRYSONLMA.i new species. 



Related to 21. bovilla and described in the tabulations which 

 follow. It may be separated at once from bovilla by the form of the 

 abdominal appendages which are figured for both species. 



The following notes were made on the living colors: Eyes bright 

 green beneath, above very dark green in front, with a large posterior 

 red spot (this refers to the dorsal surface of the eyes), the green and 

 red separated by a triangular black area, one side of the triangle being 

 against the vertex. Dorsum of thorax narrowly metallic black, on 

 either side dark flesh red, shading out to paler below and behind. 

 Dorsum of abdomen black, sides dull yellowish; about apical half 

 of 7 and all of 8-10 about the color of the mesepimeron (flesh red). 



Described from a single male in my collection taken March 10, 

 1912, at the swamp described above near Cumuto, Trinidad. 



i As in the following two species, I am under obligations to Mr. W. E. Broadway, of the Botanic 

 Station, Tobago, who has kindly furnished me with three generic names of plants which occur in the 

 sav ann ahs near Cumuto and elsewhere in Trinidad. Brysonima is "a small scraggy-looking tree char- 

 acteristic of these natural savannahs.'' 



