200 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxx. 



raised lines, the mesopleura polished with a median depression, while 

 tlie uietathorax is ragiilose, with two large smooth areas at base. The 

 abdomen has the first segment and the second to the first transver.se 

 impressed line, rather coarsely longitudinall}^ striated, the rest of the 

 abdomen being smooth. 



Ti/pe.—Cnt No. 7298, U.S.N.M. 



Locality. — Hakone (A. Koebele). One specimen. 



SiiljfaiTiily XVII. rtP^THiiisr^*:;, 

 Tribe II. HORNIIINI. • 



Genus CHREMYLUS Haliday. 

 CHREMYLUS JAPONICUS, new species. 



Female. — Length 1 mm. Head black, shining, the thorax and last 

 four joints of the antennte brown-black, opaque, the abdomen with a 

 reddish tinge, the rest of the antenna^ and the legs pale yellowish. 

 The metathorax is areolated, the upper hind angles briefl}" toothed, 

 the areola lozengoidal, petiolate at base. Wings hyaline, the stigma 

 and veins brown. 



Tyy^ti.— Cat. No. 7299, U.S.N.M. 



Locality, — Atami (A. Koebele). One specimen. 



ACANTHORMIUS, new genus. 



This interesting new genus maj^ be inserted in my table of genera, 

 Classification of the Ichneumen Flies, 1900, page 148, as follows: 



4. Subdiscoidal uervure interstitial. 



Kecurrent nervure received by the second cul)ital cell. 



Abdomen normal, with at least 6 segments, not longitudinally striated. 



HunniuK Nees. 



Abdomen abnormal, with only 3 segments, all longitudinally striated, the 



third with the hind angles produced into long, acute spines, nearly the 



length of the ovipositor (female) Acantliormius, new genus. 



ACANTHORMIUS JAPONICUS, new species. 



Fernale. — Length, 1.8 nmi. ; ovipositor about one-third the length 

 of the abdomen. Head and thorax pale brownish, the abdomen dark 

 brown above, longitudinally striated, beneath pale yellowish; head 

 smooth and shining, brownish yellow; palpi, tegula^, coxa^, and tro- 

 chanters whitish or yellowish white; rest of legs pale yellowish; meta- 

 thorax areolated. 



Tyj>e.—Cx\{. No. 7300, U.S.N.M. 



Locality. — Hakone, (A. Koebele). One specimen. 



