Sept. 1898.] TOWNSEND & COCKERELL : On MEXICAN COCCID^E. 119 



This species is allied to A. nigropunctatus Ckll. It resembles it in 

 general appearance by the blackish exuviae, and the lobes are similar in 

 form. It may be distinguished from that species by the lobes being en- 

 tire, not notched. The scales are also uniformly smaller than in nigro- 

 punctatus. 



Massed on leaves of Agave sp. Toluca, Mexico, August 29, 1897 

 (Koebele 1697). Div. Ent., No. 7935. 



Aspidiotus koebelei, sp. nov. 



Belongs in the subgenus Chrysomphalus. Allied to A. albopictus Ckll., from 

 which it differs as follows : Caudal end not so narrow and pointed. Caudolateral 

 glands 3, cephalolaterals 4. Tubular glands short, only about as long as the median 

 lobes, eight in number, the median pair having their origin posterad of the rest. In 

 immature females these glands are much longer, and much resemble those of albopic- 

 tus. Median lobes well separated, about as wide as long, rounded, entire. Second 

 pair of lobes removed from the median a distance equal to diameter of either lobe, 

 about same width as median, entire. Third pair pointed, tooth -like, somewhat farther 

 removed from second than are latter from median, less conspicuous than other lobes. 

 Farther down the margin a rudiment of a fourth lobe appears. Anal orifice (appar- 

 ently) close up near base of tubular glands. 



9. Scale circular to suboval, flat or but little raised, \yi to 2 mm. in diameter, 

 usually clear light brown but sometimes more or less grayish. Exuvias a little to one 

 side of center, marked only by a darker ring in some specimens, in others nearly con- 

 colorous with rest of scale, while in still others they are grayish or of a lighter color. 

 $ scales oblong or long-oval, usually pale grayish-brown, the exuviae usually neaier 

 one end and light reddish-brown in color. 



Numerous $ and 9 scales massed on leaves of orange, Oaxaca, 

 Oaxaca State, August 22, 1897 (Koebele 1656). Div. Ent., No. 7935. 



Aspidiotus albopictus var. leonis, var. nov. 



The characters of the O are the same as in albopictus, except that the caudolat- 

 eral glands number 5 to 6, and the cephalolaterals only 6 to 7. A. albopictus be- 

 longs in Chrysomphalus. One specimen is infested by an interesting fungus. 



9 . Scale circular, flat, averaging 1 yi mm. in diameter. Color of scale flesh-gray, 

 outer border more or less distinctly whitish, the whitish often invading most of sur- 

 face. Exuvia; often nearly central, pale brown. Although the characters of the 9 

 insect are nearly the same as in typical albopictus, the present specimens represent at 

 least a good variety in the considerable differences in the characters of the 9 scale. 



On leaves of orange, Linares, Neuvo Leon, Dec. 17, 1897 (Town- 

 send). Div. Ent., No. 7935. 



Diaspis baccharidis, sp. nov. 



9. Scale rather broad oyster-shell shaped, 2 to 2]/ z mm. long, iyi to 2 mm. 

 wide, flattened, exuvice at smaller end which corresponds to the hinge end of an 

 oyster shell, leaving a whitish film on bark when detached. The inside or underside 



