J. R. MALLOCH 6 



Three miles west (at El Alto) the railroad begins to descend the 

 Pacific slope. Cartago lies in an east and west valley (valley of 

 Guarco), bounded on the north by the volcano of Irazu (11,300 

 feet) and on the south by lower ranges (Serro de Las ( 'ruces) . The 

 country around the town is pasture land, coffee plantations and 

 some other cultivated fields, no forest, country well watered. 



El Alto. — Altitude 4950 feet. Point on the railroad where the 

 change from the Atlantic to the Pacific slope is made. El Alto 

 is a pass between the southwest side of the volcano Irazu and the 

 northwest side of La Carpintera (a mountain 5700 feet high which 

 bounds on the west the valley in which Cartago lies). Near El 

 Alto station is a flat place among the hills which is swampy, with 

 some standing water, called the Laguna de Ochomogo. There 

 are few trees and no forest near. At this laguna I collected on 

 July 7, 1909. 



Filadelfia. — (See Rio Tempisque). 



Guacimo. — June 5, 1909. I collected in the banana fields, in 

 a small clearing in the edge of high forest and also in low wet woods. 

 Do not know from which place the Diptera were collected. Al- 

 titude about 350 feet in all three, as the country is fairly level. 



Guapiles. — June 4, 1909; in the forest south of the town. Al- 

 titude 1 150 feet. June 5, 1909 ; along Rio CUiapiles flowing through 

 open pastures with here and there fringes of trees and under- 

 growth along banks; north of town, altitude about 980 feet. 



Florida Road. — ^A trail of a few miles west of Guapiles, leading 

 westward into rich tropical forest of mingled deciduous exogenous 

 trees and palms and dense undergrowth. Trees with many para- 

 sitic and epiphytic plants. The nearest point to the entrance 

 to this trail is the hacienda of San Jacinto (June 3, 1909). 



Irazu Volcano. — I have used 'Trazu" to cover a large area 

 of land, to the north of Cartago, gradually rising from say 4800 

 feet altitude to the rim of the highest crater, 11,300 feet altitude. 

 This highest point is 12 miles from Cartago railroad station. All 

 the southern slopes of Irazu, up to about 9000 feet, have been 

 cleared of most of the original evergreen oak forest. From 9000 

 feet to 10,300 feet on the road from Cartago to the crater was still 

 occupied by the oak forest. Above 10,300 feet the trees are about 

 10 to 15 feet high and more scattered. (In the oak forest the 

 trees are 50 feet or more in height.) Below 9000 feet, on the 



TRANS. AM. ENT. SOC, XL. 



