NO. 1142. XE W ENC YRTINE INSECTS— RO WARD. 239 



ASTYMACHUS JAPONICUS, new species. 



Female. — Length, exclusive of ovipositor, 1.16 mm.; expanse, 2 mm.; 

 greatest width of forewing, 0.32 mm. All specimens are mounted in 

 balsam, so that details of sculpture can not be made out. General color 

 bright orange yellow ; eyes black ; ocelli dark red ; antennae light brown ; 

 ovipositor-sheaths black; terminal joints of all tarsi dark brown. 



J7rr/f;.— Eesembles female in all respects except in the generic char- 

 acters pointed out above and in the primary sexual characters. 



Many male and female specimens reared by Mr. Albert Koebele from 

 a Lecanium-like coccid on Bamhusa^ Gifu, Japan (Koebele's No. 1259). 



T^j>e.— :No. 5031, U.S.N.M. 



HETERARTHRELLUS, new genus. 



Female. — Has somewhat the facies of Aphycns, differing mainly in the 

 antennae. Mandibles short, 3-dentate. Head short, vertex broad, eyes 

 naked, face not prolonged, scrobes subcircnlar. Antennae inserted near 

 mouth ; scape long, reaching above top of head, subcylindrical; pedicel 

 only half as long as first funicle joint; fimicle joint 1 six times as long 

 as broad, remaining funicle joints rapidly decreasing in length to 0, 

 which is about as broad as long; (;lub llattened, oval, slightly wider 

 than funicle joint 6 and somewhat longer than funicle joints 5 and G 

 together. Head and thorax opaque, closely microscopically punctate, 

 scapulae barely meeting at tips ; abdomen subopaque. Fore wings with 

 a short marginal vein and a longer postmarginal and stigmal, which are 

 subequal in length, the stigmal distinctly curved; submarginal very 

 close to costa. Hind wings with a very narrow costal cell, which, how- 

 ever, extends nearly to booklets. 



Male. — Resembles female except in antennae, which are filiform with 

 slightly enlarged club and furnished with long hairs not arranged in 

 whorls. The pedicel is very short and the funicle joints subequal in 

 length, the terminal ones perhaps a trifle shorter. 



HETERARTHRELLUS AUSTRALIENSIS, new species. 



Female. — Length, 1.28 mm. ; expanse, 3.4 mm. ; greatest width of fore- 

 wing, 0.59 mm. Head and mesonotum very finely microscopically punc- 

 tate, mesonotum and cheeks covered with dense short white pile; meso- 

 plenraand abdomen very finely shagieened, the latter with dense short 

 white pile. Ocelli forming a slightly obtuse-angled triangle, well sep- 

 arated from both occipital and eye margins. General color black ; head 

 and mesopleura orange; antennal scape with a white spot below", near 

 tip; propleura orange except tip, which is pallid; tegulae pallid with a 

 brown spot at tip; all legs honey yellow; hind tibiae dusky. Wings 

 hyaline, veins dark brown. 



Male. — What is probably the male of this species, although reared 

 from a different insect, is uniformly black except for an orange spot 

 each side of face between eyes, orange pleura and tegulae and legs like 



