DESCRIPTION OF THE SPECIES. 2C5 



vein; the second is perpendicular and begins on the stigma; both 

 converge posteriorly and coalesce quite a distance from the 

 posterior margin, so that tbe cuneiform hyaline space between 

 them does not reach beyond the anterior angle of the basis of 

 the third posterior cell. The third black band runs over the 

 posterior crossvein and is parallel to the second band, so that 

 between both there is a somewhat irregularly limited hyaline 

 crossband, which is perceptibly dilated between the third longi- 

 tudinal vein and the anterior margin; it reaches the latter 

 immediately behind the stigma ; the posterior end of the third 

 band shows some inclination to coalesce with the second band 

 near the posterior margin. The fourth band completely coalesces 

 with the third between the costa and the second longitudinal 

 vein, and follows the margin of the wing some distance beyond 

 the end of the fourth longitudinal vein ; between the tips of the 

 second and fourth veins, however, there is a rather broad' hyaline 

 interval between it and the margin; beyond this point, it touches 

 the margin completely. 



Hab. New York (Dr. A. Fitch); Canada (Mr. Provancher). 



Observation. — In the first volume of the Monographs I ex- 

 pressed the supposition that the Tephrilis tabellaria of Fitch 

 may not be a Trypeta at all, but an Ortalida; this supposition, 

 however, proved to be erroneous ; it is a Trypetida, belonging 

 to the genus Iihagoletis. 



25. T. pomonella Walsh. J . — Fusco-nigra, capite, trochanteribus, 

 femorara apice, tibiis, tarsisque luteis, thoracis margine laterali, scutel- 

 loque praeter margines laterales et anticum albis, abdominis colore in 

 piceuin vergeute, seguientorum marginibns posticis confertim albido- 

 pollinosis, terebra. latissima, sed brevi ; alse hyalinae, fasciis quatuor 

 nigris, prima subbasali, reliquis tribus integris,antice conjunctis, postice 

 divergentibus. 



Brownish-black; head, second joint of the coxae, tip of the femora, tibiae, 

 and tarsi clay-yellowish ; lateral margin of tbe tborax and scutellnm, 

 tbe latter with the exception of its basis and of its lateral margins, 

 white; abdomen more pitch-brown, with crossbands of white pollen on 

 the posterior margins of tbe segments ; ovipositor very broad, bnt short ; 

 wings hyaline, with four black crossbands, the first of which lies near 

 the basis, the last three are connected near the anterior margin and 

 divergent towards the posterior one. Long. corp. 0.17, cum terebra 

 0.19; long. al. 0.17. 



Stn. Trypeta pomonella Walsh, First Rep. Illin. etc., p. 29-33, f. 2. 



