58 Pomona College Journal of Economic Botany 



state of Morelos, for a few days of collecting. In spite of the frequent 

 rains we found this region very productive. I was enabled here to see the 

 work of the Mexican orange-maggot, the larva of Trypeta ludens. At this 

 time the oranges had not begun to ripen, but the mangoes, which are also 

 attacked by this same maggot, were at their best. I attempted in all the 

 places visited during the summer to acquaint myself with the exact extent 

 of the injuries and the measures taken toward its control or extermination. A 

 detailed account of these observations with the measures used and other 

 measures proposed has appeared in a report on the Trypeta hidcns in Mexico, 

 published in the Pomona Journal of Entomology. 



The climate and topography of Cuernavaca make it quite subtropical in 

 vegetation as well as in its faunal life, so that this spot has become quite 

 famous to entomologists. To the agriculturist it ought to be much more 

 valuable. With its fine soil, abundant rains, even climate and a tremendous 

 market in Mexico City, only four hours distant by rail, the Cuernavaca 

 Valley should be one of Mexico's garden spots. 



From Cuernavaca to the City of Mexico the train passes over a high 

 range of mountains, slightly more than ten thousand feet above sea level at 

 the highest point reached. On our return to the city we stopped for one 

 day at a small Indian village, called Parres, very near to the summit just 

 mentioned. Some very interesting specimens were taken at this elevation, as 

 might be expected. 



Leaving Mexico City for the second time we set out for the state of 

 Chiapas, on the Pacific side and at the extreme southern end of the Republic. 

 Although it is not a very great distance from the Capital, yet the journey 

 required over four days, owing to slow transit over rather new road beds. 

 Our headquarters in this state were made at the Soconusco Rubber Plantation, 

 Hacienda Dona Maria, near Escuintla. We were given many favors by the 

 field manager of the plantation, Mr. Rolf Olssen-Seffer, which aided very 

 much the work of the expedition. From this place a trip was made to 

 Tapachula, only a few miles from the Central American border, and from 

 this latter place another trip far up into the mountains where lies the 

 great coffee district of the state. The type of insect fauna in this state is, 

 of course, tropical, and except when hindered by the frequent tropical thunder 

 showers, we were able to do some very good collecting. I had been re- 

 quested by Dr. Pehr Olssen-Seffer to make what studies I could on a certain 

 boring beetle existing in the rubber trees, Castilloa elastica, and try to find 

 some effective remedy. A report of these investigations has been published in 

 the American Review of Tropical Agriculture. The well known coffee mildew 

 was found very abundant in the coffee district in the mountains. Attempts 

 have been made in various ways to control the moisture which favors the 

 mildew, but they do not seem to be entirely successful. Resort may have to 

 be taken, as was suggested to one of the planters, to cutting narrow lanes 

 in the direction which the wind takes. This has been tried in other places 

 with more or less success. Mention need not be made of the numerous minor 



