J. CHESTKK BRADLEY. 109 



2. The free part of M4 present (Fit;. 73). .FoeiillS Fabricius {Gasteruption auct). 



(Type Ichneumon anieclator L.) 



The free part of .AIj lost (Fig. 74) P<*en«IolV»iiiiS KieflTer. 



(Type (rasteriiption pednriicidiilnm Schletterer.) 



Ffjcmis maculicornis Cameron, from Mexico, l)elongs to tlie genu.- 

 Fseudoffienns. 



TABLE TO THE NORTH AMERICAN SPECIES GROUPS OF FCEXUS. 

 AND THE SPECIES OF THE MONTANUS GROUP. 



1. Ovipositor of the females as long as the abdomen tarsatorius group. 



Ovipositor of the females about one-quarter as long as the abdomen. 



montanus group (2l. 



2. Medial mesothoracic lobe shagreened, not striate (3 1. 



Medial mesothoracic lobe transversely rugose-striate iilifrura Kicfler. 



3. Second, third and fourth abdominal segments banded black and red. 



montaiiU!>i iiicertns Cresson. 

 Apex of second, third, fourth and fifth abdominal segments excejit dorsal 

 spots, entirely red, middle and posterior legs often red beneath. 



moutaiiUM Cresson. 



FwiiUN montanus Cresson. 

 1864. Fwnns montanus Cresson, Proc, Ent. Soc, Phila. iii, j). 132. 

 1864. Fcentis incertus Cresson, ibid., p. 133 (^ race incerius). 



1903. Gastentption micrura nigripectiis KieflTer, Ark. ZooL, i. p. ,")56. 



1904. GasterupHon nevadense Kiefler, Invert, pacifica, i, p. 41 (race montanus). 

 Black, abdomen often partly rufous, legs sometimes light, ovipositor 2..5-3 mm. 



Length 7.5-13 mm. 



9 . — Head black ; occiput and face very minutely roughened, with close punc- 

 tures several times smaller than the facets of the eye, giving the whole a dull 

 opaque lustre; jaws black, punctures larger and not so close; no area on the face 

 separated by grooves; face impubescent, except for a fringe of yellow hairs on 

 the edge of the clypeus, which is emarginate, its articulation marked by a very 

 fine suture; a short ridge between the antenniu above; face not narrowed ; head 

 very broadly rounded behind the eyes, posterior margin simple; first joint of 

 flagellum strongly clavate, two-thirds the size of .second, which is subcylindrical, 

 third scarcely longer than the second, but perfectly cylindrical; antennse more 

 minutely punctured than the face, glabrous to the middle of the third segment 

 of the flagellum, where it becomes pubescent; head beneath glabrous. Neck 

 short, finely wrinkled anteriorly belove, smooth posteriorly, with a few scattered 

 punctations; above more coansely reticulate. Thorax black; margin of pro- 

 thorax wavy, without any well-marked tooth; propleura and mesothoracic lobe 

 finely roughened with punctures somewhat larger than the facets of the eye, 

 especially the former; parapsides smooth and more sparingly punctulate. with- 

 out an impressed longitudinal line; meso- and metapleuiaj more coarsely punc- 

 tulate; scutellutn very finely punctulate; wings hyaline, without violaceous 

 reflection, veins dark. Legs nearly black, somewhat subcastaneous, evenly and 

 most minutely punctulate, tibige and tarsi covered with short pubescence. .-Vbdo- 



TEANS. AM. ENT. SOC. XXXIV. APRIL, 1908. 



