TURRUCARES AND RIO GRANDE DE TJRCOLES 377 



it was between Alajuela and Rio Segundo, where a group 

 was in flower on March 12. The trees near Turrucares 

 were fruiting on April 9. 



We stopped for a short time on December 21 in a rice 

 field by the side of the track. The crop had been harvested 

 but among the stubble were numbers of winged ant-lions — 

 a greater number than either of us remembered to have seen 

 elsewhere. The species was described by Mr. Banks from 

 our specimens as new, under the name Brachynemurus fe- 

 nestratus. 



Where the Pacific railroad approaches the bridge over the 

 Rio Grande de Tarcoles it describes several loops to descend 

 to the bridge grade and the country people have cut off 

 these loops by a well-worn path across some fields by which 

 the walk is considerably shortened. Crossing this bridge 

 on foot gives one more opportunity to appreciate its great 

 height and the perpendicular rock walls of the river gorge. 

 The gorge is by no means straight so that one cannot see 

 far up or down the river from the bridge. 



Before reaching the bridge on December 21 I captured 

 one specimen of Pseudoleon superbus resting on the soil 

 alongside the railroad track, and Professor Tristan took a 

 second after crossing the bridge. This is a dragonfly with 

 very peculiar and bizarre wing markings and colorings, hith- 

 erto never recorded south of Guatemala. The most north- 

 ern specimen was taken in an Arizona cafion by Dr. Henry 

 Skinner. 



We went on to Atenas station where we breakfasted as de- 

 scribed in Chapter II. This concluded we went east again 

 for a short distance and descended the north side of the rail- 

 road embankment into a little ravine known locally as the 

 Quebrada de Salas, — Salas being the name of the owner of a 

 farm nearby. This ravine is occupied by a small stream of 

 clear water flowing between moderate-sized rocks, one of 



