1895.] NATURAL SCIENCES OF PHILADELPHIA. 357 



12. Thorax rather densely clothed with long cinereous pubescence ; 

 femora about equally black and yellow ; markings of abdomen 



usually greenish-white or pale yellow Spinolce. 



Thorax not densely clothed with pubescence ; femora entirely 

 yellow, more rarely black at extreme base ; markings bright 

 yellow (markings of thorax variable) nubUipennis. 



13. Flagellum entirely black ; form large and robust . . nubUipennis. 

 Flagellum pale beneath ; form smaller and less robust ; stipes of 

 genitalia as in fig. 1, Plate XIV similans. 



1. Bembex amoena Hdl. 



Bembex amoena Handlirsch, Sitz. Akad. Wien., Math.-naturw. Classe, Abth. 

 I, CII, p. 769. $ J , PL I, f. 32; PL VI, f. 31. 



Illinois (Handlirsch); Colorado; British Columbia (Handlirsch); 

 California; Nevada; Utah and Lower California. 



This species is the lucce of Cresson, which was never described. 

 The abdominal markings are extremely variable, in some specimens 

 being almost entirely wanting. 



2. Bembex Belfragei Cress. 



Bembex Belfragei Cresson, (in pt.), Pr. Am. Ent. Soc, IV, p. 220, $ . 

 Bembex Cressonis Handlirsch, 1. c, p. 792, $ £> , PL V, f. 6. 



Texas. Cresson confused two species in his description of this 

 species and Handlirsch, unable to decide from it which form should 

 be called Belfragei, gives them both a new name. I have Cresson's 

 types before me and find that the specimen on the original label to be 

 Cressonis Handlirsch. Judging from this and from the fact that all 

 the Cressonis are from Texas, while on the contrary the other form 

 is from Georgia and Florida, I would place Cressonis as a synonym 

 of Belfragei. There is, of course some doubt whether this is the 

 proper course to pursue in the matter, but I think the facts cited 

 above are sumcent to justify this action. 



3. Bembex insignis Hdl. 



Bembex Belfragei Cresson (in pt.), 1. c, p. 220. $ . 



Bembex insignis Handlirsch, 1. c, p. 793, $ O , PL II, f. 7; PL VI, f. 32. 



Georgia, Florida (C. W. Johnson). 



4. Bembex Spinolae St. Farg. 



? Bembex fasciata Fabricius, Syst. Piez., 224, 1804. 

 Bembex Spinolce Lepeletier, de St. Fargeau, Hym. , III, 277. 

 Bembex fasciata Dahlbom, Hym. Eur., I, 487, 9 • 

 Bembex Spinolce Handlirsch, 1. c, p. 825. 



Occurs throughout the United States and has been known to 

 American students as fasciata Fabr., but as Handlirsch points out 

 Fabricius' description applies equally well to other species of the 



