NO. 2332. VARIOUS NEW SPECIES OF HYMENOPTERA—OJRAULT. 189 



The male antennae are filiform, the club solid, funicle 1 over 

 twice longer than wide but shorter than the club. This form appar- 

 ently the variety h of Howard. The funicle 6 is distinctly shorter 

 than the solid club. 



Encyrtus solus Howard resembles the species but its head is not 

 longer than wide, its marginal vein is longer. 



The Copidosomae of Australia differ notably from the above 

 species in having the abdomen large and much compressed, the 

 ovipositor much extruded. Some specimens of both sexes (E. gele- 

 chiae) reared from the larvae of Gelechia gallaesolidaginis, Tallahas- 

 see, Florida, had the abdomen compressed somewhat as in the Aus- 

 tralian species but the ovipositor very short. 



Type locality. — Ottawa, Canada. 



Types — Cat. No. 21019, U.S.N.M., five pairs on two cards and a 

 slide with a female head. 



TYNDARICHOIDES, new genus (Encyrtini). 



The characteristics of the genus are essentially those of the geno- 

 type, a description of which follows: 



Genotype. — Tyndarichoides mexicanus, new species. 



TYNDARICHOIDES MEXICANUS. new species. 



FemaZe— Length, 1.00 mm. 



Dark metallic green, the wings hyaline but with a complete, slightly 

 bowed fuscous cross-stripe from the stigmal veins apex to the distal 

 fourth of the submarginal vein, the base infuscated slightly; the 

 cross-stripe is somewhat over twice longer than wide; venation black; 

 funicles 5 and 6 the club, cephalic knee tip of cephalic tibia, the tarsi, 

 the middle femur at apex broadly, middle knee, the middle tibiae 

 (except for three distinct black cincti, the middle longest, the third 

 at apex, narrowest) caudal femur at apex and base narrowly (the 

 knee capped with metalHc) and caudal tibiae except for two longer 

 cincti, the second longest (crossing at middle and extending over 

 half way to apex) silvery white; distal tarsal joint black (also the 

 proximal of the caudal legs), Cephalic frons (between the cephalic 

 ocellus and the apex of the scrobes) orange yellow. A silvery lunula 

 cephalad of the tegula (dorso-laterad). Head and thorax densely, 

 minutely scaly and with scattered, distinct, stiff, short, normal silvery 

 pubescence. Cephalic tarsi dusky. Head locustiform (longer than 

 wide, narrowed ventrad and truncate there); frons moderate, not 

 prominent, the scrobes long and straight, not quite joined above 

 forming a long concave triangle, reaching nearly three fourths 

 the way to the cephalic ocellus. Antennae widely separated, inserted 

 near the mouth, capitate, the club obliquely truncate from the 

 base of joint 3, nearly as long as the funicle and wider but not en- 



