I08 ENTOMOLOGICA.L NEWS. [April, '03 



occiput with white pubescence and hairs ; antennae entirely light yellow, 

 aristae black. Dorsal portion of the thorax a shining black ; humeri, 

 lateral margins, pleura and scutellum, light yellow ; the anterior por- 

 tion of the thorax, in certain light, shows a whitish sheen ; a pair of 

 bristles on the ante-alar and post-alar callosities, and four on the scutel- 

 lum. Abdomen black, shining ; the posterior edge of the second and 

 third segments narrowly margined with yellow ; a small yellow spot 

 bearing a tuft of black bristles on the sides of the first segment, the 

 remaining segments with more or less prominent hairs and bristles, 

 especially along the sides of the posterior margins ; genital portions dark 

 yellow ; halteres yellow, the knobs narrowly margined with brown above. 

 Legs light yellow. Wings hyaline, with a very slight brownish tinge. 

 Length, 6 mm. 



Two Specimens, Richmond Hill, I^ong Island, N. Y., July 

 2, 1901. 



This species is dedicated to my friend Mr. Erich Daecke. 

 The genus was recorded (but the species not described) by 

 Mr. Coquillett in Mrs. Slosson's "Additional List of Insects 

 Taken in Alpine Regions of Mt. Washington " (Kntom. News, 

 Nov., 1897, P- 239). The specimen was submitted to Mr. 

 Coquillett who pronounced it a different species, and also 

 stated that he had another specimen collected by Mrs. Slosson 

 at Franconia, N. H., which is identical. It differs from the 

 European N. flavicornis Zett. in having the aristae entirely 

 black, and only the second and third segments of the abdomen 

 banded with yellow ; from N. scutellatus Macq. in having the 

 third joint of the antennae large and bright yellow, not small 

 and brown, while the latter has five of its abdominal segments 

 banded with yellow. 



How Shall We Arrange Our Collections ? 

 By H. T. Fkrnald, Amherst, Mass. 

 This question has always been one which has caused much 

 trouble. Before the work of Darwin made itself felt, it was, 

 perhaps, of less importance, but with the development of the 

 idea of descent as applied to all animal life, the problem of 

 such an arrangement as should represent the varous stages of 

 evolution of the insects has become prominent. Formerly every 

 one expected to find the first tray of a collection devoted to Apoid 



