Vol. xxi] ENTOMOLOGICAL NEWS. 335 



on tree-trunks and branches on the Atlantic slope than on the 

 Pacific. 



The principal objects of the speaker's researches were to 

 collect data on (i) the seasonal distribution of the Oclonata, 

 (2) their larval forms, and (3) their habits. Emphasis \vas 

 laid on the fact that he at no time planned the gathering of a 

 large collection of specimens or the making of a complete ex- 

 ploration of Costa Rica. Headquarters were established at 

 Cartago, on the line of the railroad, at an altitude of 4750 feet 

 on the Atlantic slope, three miles from the divide. Very com- 

 fortable accommodations were found in Weldon's Hotel in 

 that town, managed by Mr. Joseph Weldon, formerly of Pitts- 

 burgh and McKeesport, Pennsylvania. The town was clean, 

 healthy, lighted with electricity, was supplied with good water 

 piped to the houses, and was drained by an underground sewer 

 system. 



In furtherance of the first object of investigation mentioned 

 above, collections and observations were made at intervals in 

 the same places and as nearly as possible in the same spots, 

 and record was made each day of all species seen. The prin- 

 cipal points at which this work was done were as follows : 

 On the Atlantic slope, 



Banana River region, 50 feet, Nov. 



Guapiles, 984 feet, June, Nov. 



Peralta, 1088 feet, Aug., Mar. 



Turrialba, 2000 feet, July. 



Juan Vinas, 2500-4000 feet, June, Aug., Oct., Dec., Feb., 

 Mar., April. 



Cachi, 3600 feet. Mar. 



Cartago, 4750 feet, every month. 



Volcano Irazu, 4750-11,300 feet, July, Sept.. Mar. 

 On the Pacific slope, 



Tres Rios, 4260 feet, and La Carpintera to 5700 feet. 

 Dec., Mar. 



Alajuela, 3100 feet, Sept., Dec. 



Turrucares. 1800-2200 feet, Aug., Dec.. April. 



Surubres, 800 feet, Oct. 



Puntarenas, TO feet, Feb. 



Province of Guanacaste (chiefly near Liberia and Santa 



Cruz), 0-2200 feet. Jan. 



At all of these places search was made for larvae and their 

 exuviae as well as for the imagos. Living larvae were car- 



