1895.] NATURAL SCIENCES OF PHILADELPHIA. 36o 



MICROBEMBEX Patton. 



Microbembex Patton, Bull. U. S. Geol. Survey, V, 364, 1879. 

 Bembcx (in pt.) Handlirsch, 1. c. p. 660, 1893: Fox, Proc. A. N. S. Phila. 

 1894, p. 303. 



Microbembex inonodonta Say. 



Bembex monodonlaS&y, Exp. St. Peter's River, Appendix, p. 335. 

 Bembex filial a Lepeletier de St. Fargeau, Hym., Ill, 379, $ . 

 Bembex argentifrotis Cresson, Proc. Ent. Soc, Phila., IV, p. 141, O g . 

 Microbembex monodonta Patton, 1. c, p. 364. 

 Bembex monodonta Handlirsch, 1. c, p. 882. 



Occurs throughout the United States and extends' to Guatemala. 

 In the S the markings of the abdomen are extremely variable ; 

 and I have a specimen before me in which the abdomen is entirely 

 yellow. 



MONEDTJLA Latreille. 



Monedula Latreille, Hist. Nat. des Insects, III, 345. 1802. 

 Stictia Illiger, Faun. Etrusca, Ed. 2, 285, 1806. 



Monedula Handlirsch, Sitz. d. k. Akad. Wissensch. Wien. Math.-naturw. 

 Classe, XCIX, Abth. I, 77. 1890. 



Females. 



Second ventral abdominal segment a little prominent aud truncate 

 basally; anterior ocellus round, not placed in a pit 2 



Second ventral abdominal segment not prominent, fiat; anterior 

 ocellus reniform, placed in a strong pit 3 



2. Sides of thorax almost entirely, four longitudinal stripes on dorsu- 



lum, line on scutellum and metanotum and a curved one on 

 middle segment, yellowish; femora yellow with a dark stripe 



above signata. 



Sides of thorax except tubercles and lateral angles of middle seg- 

 ment, black; dorsulum with a yellow spot near the tegula j only, 

 the scutellum with a small lateral spot; middle segment with 

 or without a curved yellow line Carolina. 



3. Dorsulum with a U-shaped yellow mark (pulvilli large and dis- 



tinct) 4 



Dorsulum at the most with two longitudinal yellow marks ... 5 



4. Length 16-22 mm.; eyes converging above; abdomen about equally 



yellow r and black speciosa. 



Length 10 mm.; eyes not converging above; abdomen almost 

 entirely yellow scitula_ 



5. Pulvilli large and distinct 6 



Pulvilli small, indistinct 10 



6. Head small, narrower than thorax (head and thorax more hairy 



than usual; no marks on dorsulum or mesopleuree; markings 



pale yellow ' emarginata. 



Head as usual, as wide as thorax 7 



