12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 70 



37. Wings with a dusky area in middle; body 5 mm.; ovipositor longer than 



body No. 41 perplexum Huber. 



Wings entirely hyaline -38 



38. Thoracic dorsum minutely sculptured 39 



Thoracic dorsum with large discoidal punctures 68 



39. Thorax crimson; abdomen brownish-crimson in some lights; legs light, shin- 



ing brown No. 42 cruentatum Huber. 



Not as above 40 



40. First joint of funicle not more than one-half as long as the second 41 



First funicle joint as long as the second 42 



41. Ovipositor no longer than abdomen; first joint of funicle one-half as long as 



the second No. 43 multicolor Huber. 



Ovipositor longer than body; first joint of funicle less than one-half as long 

 as the second; parapsidal furrows hardly apparent. 



No. 44 koebelei Huber. 



42. Body deep blue with a crimson tint in some lights; parapsidal furrows not 



well defined; scutellar apex highly polished No. 45 lividum Ashmead 



Body entirely brown except a slight tinge of green; about 2.5 mm 43 



Body green or some combination of colors 45 



43. Body elongate; legs uniform, shining, light brown, except that the femora 



are slightly tinged with purple and the hind coxae highly crimson. 



No. 46 dyrophantae (Ashmead). 

 Legs not as above, femora much darker than the tibiae 44 



44. Thorax very robust; ovipositor shorter than the body. 



No. 47 anthomyiae (Ashmead)" 

 Thorax elongate; ovipositor as long as the body. ..No. 48 aeneum Ashmead. 



45. Scape green or greenish-brown 46 



Scape generally yellow or testaceous 49 



46. Ovipositor no longer than abdomen. 47 



Ovipositor as long as or longer than the body 67 



47. Thorax strongl}'^ robust, dark blue and minutely punctate. 



No. 49 dasyneurae Huber. 

 Thorax elongate, metallic or bluish green 48 



48. Thoracic dorsum with transverse, elongate reticulations. 



No. 50 thalassinum (Crosby) . 

 Thoracic dorsum reticulately-punctate and bluish No. 51 rohweri Huber. 



49. Face below the antennae deeply and conspicuously punctured; first joint of 



funicle two-thirds as long as the second No. 52 punctifrons (Ashmead). 



Face and antennae not as above 50 



50. Joints of funicle all distinctly longer than wide, the first joint about as long 



or longer than the second 51 



Joints of funicle not all longer than wide 61 



51. Body small, not more than 3 mm.; ovipositor generally much longer than 



body; thorax minutely punctate No. 53 tubicola Osten Sacken. 



Body normally large, seldom smaller than 3.5 mm. and often as much as 

 5 mm.; joints of funicle of nearly equal width 52 



52. Ovipositor distinctly longer than the body which is 4-5 mm 53 



Ovipositor not as long as the body 58 



53. Margins of parapsidal grooves coarsely sculptured; scutellar apex more finely 



sculptured than rest of scutellum No. 54 mexioanum (Ashmead). 



Parapsidal grooves not so bordered and the scutellar apex not as above. 54 



54. Body entirely indigo blue; dorsum transversely rugose; femora, tibiae, and 



scape dark testaceous No. 55 coeruleum Ashmead. 



Body not as above; green or blue 55 



