20 PROCEEDINGS OF THE NATIONAL MUSEUM vol.78 



yellow, vertex similarly colored but darker^ occiput, temples, and cheeks 

 black, apical one-fourth of scutellum yellow. (Mexico). 



60. mexicanus Girault. 



72. Body entirely black or dark brown 73 



Body particolored 79 



73. Hind tibiae marked with blackish or entirely black 74 



Hind and middle tibiae yellow to whitish. All femora mostly black to 



dark brown. (Italy) 61. niger Masi. 



(Mexico) 62. mexicensis Girault.^^ 



74. Middle tibiae predominantly black or dark brown 76 



Middle tibiae entirely pale yellow or whitish 75 



75. All femora predominantly black or dark brown, the apices pale. 



(Japan) 63. yosMdae Nakayama. 



All femora pale yellow to whitish. (New York) 64. gossypariae Gahan. 



76. Paired bristles at apex of scutellum plainly less than one and one-half 



times as long as the scutellum 77 



Paired bristles at apex of scutellum one and one-half times as long as the 

 scutellum. Head predominantly dark. Legs entirely blackish brown, 

 only the tarsi obscurely pale. Marginal vein nearly twice as long as the 

 submarginal vein. Scutellum about one and one-half times as wide as 

 long. (India) 65. acanthosceles Waterston. 



77. Second and tliird funicle joints plainly longer than wide 78 



Second and third funicle joints plainly wider than long. Head and an- 



tonnae yellow. (Africa) 66. robustus, new species. 



78. Head and antennae fuscous. Legs mostly blackish brown; fore tibiae pale; 



middle and hind femora pale at ends. Marginal vein slightly longer 

 than the submarginal vein. (Africa) 67. quaestor Girault. 



79. Body, exclusive of scutellum, marked with yellow, alutaceous or 



whitish 83 



Body entirely black except for the scutellum which is more or less exten- 

 sively yellow or orange 80 



80. Hind femora mostly, if not entirely, blackish or dark brown. Head blackish 



or dark brown. Scutellum extensively marked with yellowish 81 



Legs mostly whitish, only the hind tibiae blackish, the apex pale. Head 

 mostly lemon yellow ; occiput above and ocellar area blackish. Apical 

 curvature of scutellum very narrowly margined with yellow. 

 (Panama) 68. saissetiae Gahan. 



81. Fore coxae black 82 



Fore coxae yellow ; middle and hind coxae and hind femora black, re- 

 mainder of legs yellow. (Europe, Africa, Australia, California). 



69. scutellaris (Dalman). 



82. Similar to the foregoing species except that all the coxae are black. 



(Japan) 70. ishiii, new species. 



83. Scutellum particolored, or yellow, or ferruginous, or black with a pale 



blotch on either side 86 



Scutellum entirely black or brownish 84 



84. Mesoscutum uniformly black or brownish 85 



Mesoscutum particolored, a broad band of yellow or orange extending from 



tegula to tegula including most of axillae and posterior part of mesoscu- 

 tum ; remainder of thorax and the abdomen black. (California.) 



71. scutatus Howard. 



=^ I have not seen C. niger Masi. O. mexicensis Girault is in agreement with Masi's 

 description so that it may prove to be a synonym. 



