IO6 ENTOMOLOGICAL NEWS. [Mar., '17 



The Occurrence of the Genus Monobaeus Foerster 

 in North America (Hym.) 



By A. A. GIRAULT, Glenn Dale, Maryland. 



The following species is the first of this genus to be describ- 

 ed from North America. The genus, as represented by the 

 new species, has the parapsidal furrows distinct, as is also 

 sometimes (or often) true for Ormyrus. The two genera 

 differ in the number of ring-joints only. The species differ 

 much in the sculpture of the abdomen, especially as regards 

 the arrangement of the coarser punctures at the base of the 

 segments. The club is sub-solid, but its articulations are still 

 visible. 



Monobaeus hegeli new species. 



Female : Length, 3.00 mm. Abdomen distinctly longer than the rest 

 of the body, substylate at apex. 



Very similar to Ormyrus ventricosus Ashmead but more robust and 

 the abdomen, besides the usual median carina dorsad and the scalloped 

 cross-ridges, bears a single row of coarse punctures at base of seg- 

 ments 4 and 5 and is densely pin-punctate instead of scaly, while seg- 

 ment 6 is densly thimble-punctate. Also the propodeum is bicarinate 

 at the meson instead of tricarinate as in ventricosus. Funicle I hemi- 

 spherical, shortest, over thrice the size of the usual ring-joint; other 

 funicle joints a little wider than long. Body downy. Types compared. 



Described from one female from Michigan (C. P. Gillette). 

 Type: Catalogue No. 20239, U. S. N. M., the specimen on a 

 tag, an antenna on a slide. 



Perhaps this genus may grade into Ormyrus; that is, the 

 second ring- joint be larger and larger in relation to the first, 

 so that it is no longer possible to distinguish one from two ring- 

 joints in some cases. Then the two genera must be merged as 

 Mayr has done. 



A Correction in Spelling (Col.) 



Mr. Edw. M. Ehrhorn, Superintendent, Division of Entomology, 

 Territory of Hawaii, has recently called my attention to the wrong 

 spelling of Acythopcus in my paper on "Some Unusual Orchid In- 

 sects," in the "News" for January, 1917, where it appears as Ac\po- 

 thcns. I was misled in this by following the spelling in Mr. Champion's 

 paper in the "Entomologist's Monthly Magazine" for September, 1916, 

 where it also appears as Acypothcus, evidently due to a printer's mis- 

 take. HARRY B. WEISS. 



