TRYPETIDAE. 81 



distinct black spots. The hair and even the bristles on the hind 

 border of the last segment are white. The flat ovipositor is glossy- 

 black, as long as the two last segments of the abdomen and mode- 

 rately tapering towards the tip. The legs and anterior coxae are 

 dark yellow, with white hairs ; the thighs with a blackish stripe 

 somewhat covered with whitish dust. Wings not very narrow, hya- 

 line, with the base very slightly yellowish ; their black reticulation 

 is not very dense and not very delicate, extending towards the base 

 of the wing as far as the base of the discal cell, and dissolving 

 towards the axillary angle into some scattered spots ; stigma black, 

 with a whitish dot; the middle and posterior transverse veins rather 

 approximate. 



Hob. Middle States. (Osten-Sacken.) 



Observation. The proboscis of this species being short with the 

 suctorial flaps but moderately prolonged, attention is to be paid to 

 its true place, which is among the species with a geniculated pro- 

 boscis. 



15. T. Immilis LOEW. . (Tab. II, fig. 17.) Cinerea, capite pedi- 

 busque flavis, femoribus nigris, alis rare reticulatis, stigmate atro non 

 guttato, peristomio valde producto, proboscide geniculata. 



Cinereous ; head and legs yellow, with the femora black ; reticulation of 

 the wings diffuse, and the black stigma including no limpid drop ; oral 

 border much prolonged ; proboscis geniculated. Long. corp. 0.09. Long, 

 al. 0.1. 



Among the kindred of the European Tryp. elongatula Loew, 

 but in its habit more resembling Tryp. absinthii Fabr. Head 

 yellow, considerably prolonged anteriorly. Front yellow, dis- 

 tinctly margined with white at the orbit ; frontal bristles black. 

 Face excavated with the anterior border of the mouth much pro- 

 longed. Antennse bright yellow, proportionately large and broad, 

 reaching as far as the prolonged border of the mouth ; the ante- 

 rior corner of the third joint a little pointed ; the second joint with 

 very short black hairs ; antennal bristles very long, black, with a 

 very short and hardly visible pubescence. Thorax and scutellum 

 yellowish ashy-gray with short whitish-yellow hairs and black 

 bristles. In the middle of the thorax there are four bristles, the 

 two foremost being very near the suture. Scutellum with only two 

 long bristles rather distant from the tip and not close by its lateral 

 border. Metanotum black with grayish pollen. Abdomen ashy- 

 6 



