ALDRICH AND DARLINGTON. 95 



Tiiiddle cross-veiu stiaiglit, uiiriglit; lower cross-vein straiglit, very sliglitlr 

 ohlique, parted by more than twice its length from the middle cross-vein, by 

 tiirice its length from the end of the foiirtli longitudinal vein, and by near half 

 its length from the end of the fifth lotigitudinal vein; poiseis tawny; scales 

 yellow, very small. 



"Length of the body IJ.t lines ; of the wings GJ lines. 



"Nova Scotiti. From Lieut. Redman's collection." 



♦ 

 lleloinyza fsiNciafa Walker. 



" Body clothed with black hairs and bristles ; head gray, adorned with white 

 reflections on each side of the crown and on the foi-e part, which is tawny ; sides 

 of the face without bristles; epistoniu not i)roniinent; eyes red, convex ; all the 

 facets very small ; sucker black, clothed with tawny liairs; feelers black, nearly 

 as long as the face; third joint slightly conical, rather deep, rounded at the tip. 

 very much longer than the second joint; first and second joints dark feriugi- 

 neous; bristle bare, rather stout at the base, more than twice the length of the 

 third joint; chest and breast gray ; chest with a tawny tinge; shoulders ferrugi- 

 neous, breast more hoary; abdomen tawny, shining, spindle-shaped, a little 

 longer than the chest, slender at the tip; sutures of the segments black; legs 

 tawny, clothed with black liairs and bristles; feet black, tawny at the base; 

 foot-cushions very small ; wings pale gray, with a very slight tawny tinge; wing- 

 ribs pale tawny; veins pitchy, pale tawny toward the base; lower cross-vein 

 parted by much less than twice its length from the middle cross-vein, having two 

 very indistinct curves, the lower outward, the upper inward ; scales very small, 

 whitish, with pale yellow borders; poisers tawny. 



"Length of body 2 lines, wings 4 lines. 



" Nova Scotia. Lieut. Redman's collection." 



The two descriptions immediately pi'eceding, l)y Walker, need not 

 give the student much trouble. They are inserted merely for coin- 

 j)letene.ss, and to satisfy any curiosity which might arise, but not 

 with the expectation that they will be identified. In fact, one would 

 almost certainly go wrong in identifying a species under either 

 name, no matter how well the description fit. Czerny (ojo. cit., j)p. 

 202-205) has reported the results of his examination of Walker's 

 types of Helomyzidie ; out of 36 cases examined, there was 7iot one 

 that even belongs in this family, the types being mostly Sapron)y- 

 zidtie, with an admixture of Trypetidie, Anthomyidse, etc. How- 

 ever, he does not say anything about tincta, and reports fascluta 

 lacking in the Museum. Hence we have not even the satisfaction 

 of positively excluding them from the family. 



Two specimens of harheri were received from the U. S. National 

 Museum under the name tlncia Walker, but it is probable that the 

 name was applied before Czerny publi.-hed his results; at any rate 

 we do not accept it. 



TR.\NS. AM. KNT. SOC. XXXIV. M.ARCH. 1SW8. 



