ALDRICH AND DARLINGTON. il 



Twenty-one males and eleven females. Aklrich : Pacific Grove, 

 Cal., May 9th. 



This species is common on the sand dunes south of Point Pines 

 Light, on Monterey peninsula. It flies close down to the sand, 

 resembling in its movements the drifting sand grains; when it 

 alights, its mottled color blends perfectly with the sand. No infor 

 mation was gathered as to its food habits or its larval stages. 



Anorostoina niarKiiiat» Ldew. 



Length 5.4 mm.; of wing, 5.2 inni. 



Head yellow; oceiput clay-yellow, with a rather wide black stripe running uji 

 the middle to the vertex ; front a little darker yellow, rather densely pubescent 

 below; antennai small, testaceous, third joint roundish, arista noticeably enlarged 

 at l)ase ; face strongly receding below; face and cheeks straw-yellow; one 

 vibrissa on each side of medium size. 



Thorax yellow, varying to brownish, doisum pubescent all over; the bristles 

 arising from dots; scutellum yellow, bare except the ordinary bristles; meso- 

 pleura with one strong bristle and two smaller ones on the posterior edge, and a 

 few small iiairs on the lower anterior corner ; sternopleura with one large and 

 one smaller bri.stle on the upper edge, besides jiubescence and strong bristles 

 below. 



Abdomen varying from yellow to brown ; hypopygium of the male large, 

 yellowish. 



Wings yellowish; the cross-veins and the end of the auxiliary vein stiongly 

 infuscated, forming a straight line of three dots running diagonally across the 

 wing. 



Legs entirely straw-yellow, pulvilli of about the same color. 



Fourteen males and twelve females. Daecke : Lucaston, New 

 Jersey, May 30th; Brown's Mills, New Jersey, June 21st; Manu- 

 muskin, New Jersey, May 10th. Melander : New Bedford, Massa- 

 chusetts, June 12th; Colorado. U. S. N. M. : Oswego, New York, 

 July 1st (labeled Anorostoma curoliitensis Desv.); Colorado. Cooley; 

 East Flathead, Montana, July 25th. Johnson : Manumuskin, New 

 Jersey, May 10th. Tucker: Tabernash, Colorado, August. 



L,I<:KI4 Desvoidy. 

 This genus includes all the members of the family having four 

 (iersocentrals, except those three small groups which offer addi- 

 tional generic characters distinctly their own {Q^cothea, w'ilh spines 

 on the middle of the middle tibite ; Eccoptomera, with very snuill 

 eyes, and Anorostomu, with peculiar face and oral margin); thus 

 Leria is a residual genus, not homogeneous, yet difHcidt to divide 

 by satisfactory characters. The genus Scolioceiitra, founded by 



TRANS. AM. KNT. SOC. XXXIV. M.ARCH, 190S. 



