The following new species of Arenetra have come to hand in working over some miscellaneous material in the Canadian National Collection. The genus Arenetra is referable to the tribe Lissonotini as defined by Cushman and Rohwer (Proc. U. S. N. M., 57, 392, 1920). The characters mentioned by Ashmead (Proc. U. S. N. M., 23, 50, 1900) will aid in separating species of Arenetra from related genera. Of importance among these are the non-areolated propodeum, sessile abdomen, distinct areolet, non-pectinate tarsal claws and long erect whitish or black pile on the head and thorax.

Male : Length 11 mm. Occiput and vertex black; front yellow with a shallow black triangle at vertex, the black extending in a rather narrow stripe to base of antennae, where it is slightly forked; face yellow, cheeks black, this black extending up about to the depressed grooves of the face, which are less yellow and more shining than the rest of the face and somewhat more whitish; lower ends of posterior orbits very narrowly reddish; antennae blackish with first and third joints more or less reddish; style short and thick, third joint somewhat pointed at tip, second joint with a large projection on the side; length of antennal joints about as 15-67-38, of style as 9; proboscis blackish, a little more than twice as long as head.

General ground color yellowish white to semihyaline. Color markings orange to red. Vertex with three white spots more or less surrounded with bands of color. Pronotum with almost rectangular median band touching pasterior margin and semblance of vitta from each anterior corner toward anterior margin, usual marks behind each eye. Scutellum with spot at tip, basal angles yellow more or less bordered with red or orange.

General ground color yellowish white to semihyaline. Color markings red or orange. Veitex with semblance of white spots surrounded with red, heavier red spot on tip. Pronotum with median, rather small, triangular spot with U-shaped anterior margin and usual angular spots back of each eye. Scutellum with spot on tip, basal angles yellow with red dash on exterior margin of each anterior corner. Clavi with usual red basal anchor-shaped mark, often broken in middle, and quite long dash near tip.

For the past several years live moths have been collected at the Entomological Laboratory, Lethbridge, Alta. for the purpose of securing eggs. Both light trap and bait have been used to make these collections.

The following synoptic revision of the family Cheliferidae is presented at this time in order to render available for routine systematic use the expanded classification of this important family necessitated by recent morphological and systematic research. It follows along the lines already laid down by the author in previous papers on the higher classification of the Chelonethida as a whole (Chamberlin, 1939, 1930 and 1931) and differs only in the fact that consideration of included species is omitted in all but a few special cases.