CETPTUS. 205 



Head and thorax closely rugose all over, semiopaque, covered with short, white, glis- 

 tening pubescence ; eyes narrowly edged with white ; clypeus projecting roundly in 

 the middle ; a short tubercle on the face below the antennae. The antennas are nearly 

 as long as the body ; the base of the flagellum is obscure testaceous, the third and 

 the fourth joints obscure white; first joint of the flagellum as long as the second and 

 third together, the third joint a little longer than the fourth. Mesonotal sutures 

 subobsolete. Scutellum shining, with some punctures on the top, the sides rugose. 

 Metathorax more strongly rugose than the mesothorax ; its areas obsolete ; a distinct 

 blunt spine on either side, united by a carina which goes round the top. Petiole shining, 

 depressed in the centre at the base, the sides keeled above, the apex aciculated, the 

 extreme base black ; the rest of the abdomen finely and closely punctured. Hind femora 

 curved. Areolet 5-angled, the sides scarcely converging above. 



Closely allied to C. persimilis, Cresson, but that species is easily known from it by 

 having the first joint of the flagellum not much longer than the second, the thorax 

 " polished and feebly punctured," and without a tooth on either side of the 

 metathorax. 



B. Black, marked with white. (Species 7-13.) 



— 7. Cryptus aztecus. 



Cryptus aztecus, Cresson, Proc. Acad. Phil. 1873, p. 133. no. 1' ( ? ) \ 

 Hab. Mexico, Cordova, Orizaba 1 (Sumichrast). 



8. Cryptus tantillus. 



Cryptus tantillus, Cresson, Proc. Acad. Phil. 1873, p. 134. no. 2 (<?)'. 

 Hab. Mexico, Cordova x (Sumichrast). 



9. Cryptus tenuiventris. 



Cryptus tenuiventris, Cresson, Proc. Acad. Phil. 1873, p. 134. no. 3 (<?)\ 

 Sab. Mexico, Orizaba J (Sumichrast). 



10. Cryptus celaya. 



Cryptus celaya, Cresson, Proc. Acad. Phil. 1873, p. 135. no. 4 (?) 1 . 

 Hab. Mexico, Mirador 1 (Dr. Sartorius). 



11. Cryptus arcuatus. 



Cryptus arcuatus, Cresson, Proc. Acad. Phil. 1873, p. 135. no. 5 (?) \ 

 Hab. Mexico, Orizaba 1 (Sumichrast). 



12. Cryptus transversus. 



Cryptus transversus, Cresson, Proc. Acad. Phil. 1873, p. 136. no. 6 ( ? ) \ 

 Hab. Mexico, Mirador 1 (Dr. Sartorius). 



