EXPLORATIONS IN CAPE REGION. 771 



Nine species, including one n. sp. type, collected by 

 expeditions 1888-1889. 



Ninety species, including thirteen n. sp. types, collected 

 by expeditions 1892-1893. 



Fox, William J. Third Report on some Mexican Hymenoptera, prin- 

 cipally from Lower California. Vol. v, July 20, 1895. 



The collections upon which this paper is based were 

 made exclusively in 1894, amounting to sixty-seven species 

 including five n. sp. types. 



The Hymenoptera, including Parasitic Hymenoptera 

 and Formicid^, are represented in all by seventy n. sp. 

 types, three hundred and thirty-two species, four thousand 

 five hundred specimens. 



Parasitic Hymenoptera. 



AsHMEAD, William H. Some Parasitic Hymenoptera from Lower Cali- 

 fornia. Vol. iy. April 25, 1894. 



Forty-four specimens, twenty-one species, nine n. sp. 

 types. 



Seven species, including one n. sp. type, collected by 

 expeditions 1888-1889. 



Fourteen species, including eight n. sp. types, collected 

 by expedition 1893. 



AsHMHAD, William H. Some Parasitic Hj^menoptera from Baja Califor- 

 nia and Tepic, Mexico. Vol. v, September 7, 1895. 



Thirty-eight species, twenty-two n. sp. types, collected 

 by the expedition 1894. 



This very extensive series comprises some of the largest 

 families of the order, the members of which in their 

 larval state, excepting the gall-feeding Cynipidae, are para- 

 sitic upon or within the bodies of other insects, using the 

 words of Westwood, " are of vast importance in the 

 economy of nature by preventing the too great increase 

 of different species of insects, especially of the cater- 

 pillars and moths, of which they destroy a great num- 

 ber." 



