SPECIES WHICH INJURE THE PLANT. 43 



Allorhina mutabilis Gory. According to Mr. E. A. Schwarz feeds on fruit of 

 Cereus. 



Moneilema ulkei Horn. Cotulla. Falfurrias, and Brownsville, Tex. (J. D. 

 Mitchell) ; Sabinal, Tex. (F. C. Pratt) ; Oakville, Tex. (F. C. Bishopp). 

 Larvae in roots ; adults feed on joints. 



Moneilema variolate Thomson. Mexico (Duges). 

 Breeds in " Cactus Opuntia." 



Moneilema armulatum Say. 



On Opuntia in Kansas (Popenoe.) 



Moneilema semipunctatum Le Conte. 



On Opuntia in Kansas (Popenoe.) 



Moneilema crassum Le Conte. Cotulla and Maverick counties, Tex., May 

 (J. D. Mitchell) ; Encinal, EI Paso, and Sabinal, Tex.. April to September 

 (F. C. Pratt). 

 Larva? in roots; adults feed on joints. 



Moneiiema spoliatum Horn. Encinal. Tex., May (D. Griffiths). 

 Larva; in roots; adults feed on joints. 



Moneilema Iwvithoraw White. Mex. 



* Moneilema gigas Le Conte. 



Moneilema armatum Le Conte. 



Moneilema sp. Falfurrias, Tex., April (J. D. Mitchell). 



Coenopceus palmeri Le Conte. Bred from stems of Opuntia bcrnardina. South- 

 ern California. 



Disonyeha varicornis Horn. Devils River. Tex., May (E. A. Schwarz and F. C. 

 Pratt) ; San Antonio and Austin, Tex., April, August, and June (F. C. 

 Pratt). Confined to Opuntia leptocaulis and similar species. 



Gcrstackeria hubbardi Le Conte. Breeds in the joints of Opuntia vulgaris fol- 

 lowing injury by MeUtara sp. ; taken at Crescent City and Lake Worth, 

 Fla., and Selma. Ala. (H. G. Hubbard and E. A. Schwarz). 



Gersta;ckeria bifasciata Gerstaecker. Reared November 1, 1910, by F. L. Lew- 

 ton from Echinocactus setispinus collected in June at San Antonio, Tex. 



Gcrstackeria nobilis Le Conte. Breeds in the margins of the joints of Opuntia 

 engelmanni and causes great masses of black excrement and gum to form 

 on the outside of the joint. It has been taken at Dallas, Tex. (J. Boll) ; 

 San Antonio, Tex., November (H. Soltau) ; San Diego, Tex., April, May, , 

 September (E. A. Schwarz) ; Beeville, Tex., April, eating fruit of Opuntia 

 (C. L. Marlatt) ; Cotulla, Tex., April (F. C. Pratt) ; Live Oak County, Tex., 

 June (J. D. Mitchell) ; Floresville, Tex., October (F. C. Pratt) ; Corpus 

 Christi, Tex., May (A. C. Morgan), March (W. E. Hinds); Hondo, Tex.. 

 April (J. D. Mitchell) ; College Station, Tex., March (W. D. Pierce) ; 

 Encinal, Tex., April (J. D. Mitchell) ; Victoria, Tex., April (J. D. Mitchell). 



Gerstackeria porosa Le Conte. Denver, Colorado Springs, Colo. (Wickham 

 and Soltau) ; Sedalia, Colo. (II. Soltau) ; Albuquerque, N. Mex. (H. Soltau) ; 

 Mesilla Park, N. Mex. (C. N. Ainslie) ; Kansas (Snow) ; Fort Grant, Ariz. 

 (H. G. Hubbard and E. A. Schwarz) ; San Diego, Tex. (H. G. Hubbard and 

 E. A. Schwarz) ; Floresville, Tex. (F. C. Pratt) ; Live Oak County, Tex. 

 (J. D. Mitchell); DTlanis, Tex. (J. D. Mitchell); Hondo, Tex. (F. C. 

 Pratt). 

 The species breeds in flat cells in the discs of the joints of Opuntia. 



Gersta-rkeria basalis Le Conte. Denver. Colo (H. Soltau); Greeley and Canon 

 City. Colo. (H. Soltau) ; Sioux County, Nebr. (R. H. Wolcott). 



