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sometimes no discal spots on the second tergite, but never a médian, 

 unpaired spot. Thèse seem better subgeneric than generic différences 

 and since they cannot be correlated with other, better characters we 

 hâve reduced Glossotilla also to subgeneric rank. 



The only way in which Bischoff distinguishes the females of 

 Trispilotilla from those of Trogaspidia is that in the former the apex 

 of the first tergite has a médian pubescent spot, said in his generic 

 key to be lacking in Trogaspidia. Yet Trogaspidia junodi André and 

 T. biseriata (Saussure) possess such a spot and would in his own key 

 be determinable only as Trispilotilla. The maies differ from Tro- 

 gaspidia only in having the mandibles outwardly not toothed. As 

 noted above, Bischoff leaves maies with, and maies without an ex- 

 ternal mandibular tooth both in his genus Smicromyrme and his 

 genus Mimecomutilla, which is not consistent with separating Tri- 

 spilotilla because of the absence of a mandibular tooth. Of Trispilo- 

 tilla Bischoff says : « Wenn nicht die zugehôrigen Mânnchen wesent- 

 lich verschieden wâren, wùrde ich eine Abtrennung dieser Formen 

 von der Gattung Smicromyrme nicht fur gerechtfertigt halten ». 

 And elsewhere : « Die Mânnchen sind denen der Gattung Lobotilla 

 %. T. tâuschend âhnlich. » We therefore also include Trispilotilla 

 as one of the subgenera of Smicromyrme. 



The genus Ceratotilla was established for females related to Pris- 

 tomutilla in which the head is large and the greater number of which 

 although not ail, bear erect teeth on the antennal tubercles. It does 

 not seem désirable to recognize as a genus or even subgenus a group 

 which is distinguished only by virtue of having a large head and we 

 hâve therefore recombined Ceratotilla and Pristomutilla. Moreo ver, 

 there are species included by Bischoff in Pristomutilla which hâve 

 the antennal tubercles toothed. 



But we are obliged to go further with thèse groups. In the females 

 of Pristomutilla and Ceratotilla the meshes of the propodeum hâve 

 on the upper margin of the posterior face become elongated into a 

 transverse row of spines. In ail other respects thèse insects belong 

 to Trogaspidia and it is only by the présence of this character that 

 Bischoff séparâtes them from Trogaspidia. Yet he leaves in Tro- 

 gaspidia four species of his trigonophora group which are characterized 

 by having an exactly similar row of spines, except that they are shorter : 



