64 REPORT UPON A COLLECTION OF 



The present writer has long been keenly aware of the possibilities of 

 extending our knowledge of these insects by explorations within this 

 region. With the financial support of the California Academy of Sciences, 

 the Department of Entomology of Stanford University and the United 

 States Bureau of Entomology, it became possible to spend some time 

 during the summer of 1919 in the southern portion of the peninsula for 

 the purpose, in part, especially of collecting these insects. It is upon the 

 results of this work that the present paper is based. 



ITINERARY 



Except for a few hours spent ashore at Ensenada, a port about fifty 

 miles south of the United States boundary, the collecting was confined to 

 the extreme southern portion of the peninsula of which I have already 

 spoken as the Cape Region. Accompanied by Mr. J. R. Slevin, assistant 

 curator of Herpetology of the California Academy of Sciences, I landed 

 at La Paz, a port about one hundred miles north of Cape San Lucas on 

 the gulf side of the peninsula. Here a few days were spent while arrang- 

 ing the necessary formalities connected with passing our equipment 

 through the customs, and then, with riding animals and a pack train, we 

 started upon a circuit of the region. 



Stops of a few days each were made at San Pedro, Triunfo, San 

 Antonio, San Bartolome (or, as it is commonly called by the natives and 

 will be called throughout this paper, San Bartolo), the Eureka ranch at 

 La Rivera, Agua Caliente, Miraflores, San Jose del Cabo and Cabo San 

 Lucas. From the latter place the route lay by the roughest of trails over 

 the mountains to Todos Santos on the western coast. From Todos Santos 

 a trip of a few days was made to La Laguna, a meadow near the summit 

 of the Laguna Mountains at an altitude of perhaps 5,000 feet, where one 

 finds himself in surroundings reminiscent rather of regions some hundreds 

 of miles to the northward than of the lowlands immediately about the base 

 of the mountains. From Todos Santos we then returned directly across 

 the peninsula to La Paz. 



CHARACTERISTICS OF THE SCALE INSECT FAUNA 

 There are listed in the following pages 85 species of Coccidae. Of 

 these, two, Pseudodiaspis larreae and P. dentilobis were not obtained in 

 the peninsula, although the former doubtless occurs there, but are in- 

 cluded because of their intimate connection with certain other included 

 species. Two others, Ehrhornia cupressi and Aspidiotus densiflorae are 

 represented by specimens taken from herbarium material from Guadeloupe 

 Island, an island in .the Pacific about two hundred miles off the coast of 

 Lower California. Three species, Erium lichtensioides (Ck.ll.), Pseudo- 



