68 PSYCHE [April 



Club of antennae 6-jointed ..... Hexaplasta Forster 



= Didyctium Riley 

 (Type Cothor.aspis hexatoina Hartig.) 



59. Club of antennae 4-jointed or less ....... 60 



Club of antennae 5-jointed ..... Pentarhoptra Kieffer 



(Type Eucoila tomentosa Giraud) 



60. Club of antennae 4-jointed . . . Tetraplasta Ashm., gen. nov. 



(Type T. unica Ashm.) 

 Club of antennae 3-jointed ...... Eutrias Forster 



61. Metathorax produced into a long neck the length of the hind coxae, the abdo- 

 men abnormally petiolated, the petiole long and slender, longer than the thorax 



Zamischus Ashm. 

 Metathorax normal not produced, the abdomen subsessile. 



Abdomen at base bare, without a hairy girdle .... 62 

 Abdomen at base with a hairy girdle ••••-. 73 



62. Mesonotum with parapsidal furrows ....... 63 



Mesonotum tcithoiit parapsidal furrows ...... 68 



63. Parapsidal furrows distinct to base of scutellum .... 64 

 Parapsidal furrows not distinct to base of scutellum, converging and meeting 

 before reaching the base of the scutellum, thence to base as a delicate carina ; 

 marginal cell closed ; antennae 1 5-jointed . . Eucoilidea Ashmead 



64. Parapsidal furrows converging and meeting at the base of the scutellum 65 

 Parapsidal furrows almost parallel or some distance apart to the base of 

 the scutellum ........... 67 



65. Marginal cell closed ■&\o\'\^ the front margin; cup of scutellum large ; antennae 

 1 5-jointed, the first flagellar joint longer than the second, excised towards base 



Gronotoma Fr>rster 

 Marginal cell open along the front margin ; antennae 1 5-jointed 



Diglyphosema Forster 



66. Marginal cell open along the front margin . . . . . . 67 



Marginal cell closed along the front margin 



Cup of scutellum large, rounded, its disk concave; antennae 1 5-jointed, 

 the third joint longer than the second, strongly excised 



Microstilba Forster 



67. Mesonotum luith 5 carinae .... Tropideucoela Ashmead 



Disorygma Forster 

 . . . 69 



71 

 70 



Mesonotum without carinae 



68. Marginal cell open along the front margin 

 Marginal cell closed along the front margin 



69. Scutellum normal, unarmed 



Scutellum abnormal, armed with two horns behind Dicerataspis Ashmead 



