92 JOHN B. SMITH. 



In i^peaking of H. cytwf/ lossy m Hy. Edwards, in Pap. i, 103, Mr. 

 Butler says : " This species is neai-ly allied to the Texan insect to 

 which I gave the name of H. metathetis. It differs in being slightly 

 smaller and with the external dark brown border of the primaries 

 of only two-thirds the width ; these appear to be the only noteworthy 

 distinctions between the two forms." 



Hab. — Texas. 



In the Belfrage collection, which formed a part of the collection 

 presented to the Museum by Prof. Riley, I find a single specimen 

 fully answei'ing Mr. l^utler's brief characterization. As in Mr. But- 

 ler's specimen this also bears Mr. Belfrage's label Sesia axillaris, 

 making it almost certain that it is the same form sent Mr. Butler 

 under that name. This species is so close to thetis that I cannot find 

 any seizable distinctive features. The material, however, is too scant 

 to authorize a positive reference in this genus.* 



H. rubens Hy. Edwards, Vr. Cal. Ac. Sci. vi, 88, Ilemaris; Grt., BuflF. Bull, iii, 

 '220, Ilemaris. 



Mr. Edwards gives only a comparative description of this form. 

 He says : " Under this name, if a true species, I wish to recognize 

 two s[)ecimens in my collection in which the apical red mark is very 

 distinct above and below, the oblique scale patch at the base of the 

 ])rimaries reddish and the costa and margins on the lower side also 

 with a decided I'eddish hue. In H. thetis the two preanal segments 

 alone are yellowish, but in the two specimens referred to above the 

 yellow is carried on to the third segment, dorsally and beneath, but 

 is interrupted on the sides by a black band. This a])pears to be a 

 strong character, as in my examples of thetis the yellow shade is dis- 

 tinctly confined to the two pre-anal segments. Slightly smaller than 

 thetis. The tuft of yellow hairs on the hind tibiaj is present in this 

 species. 



Hub. — Oregon, California. 



In the specimens examined by me the abdominal maculation is not 

 quite constant, though there are always more than two segments 

 yellow\ The species looks quite distinct from thetis, and is a good 

 one I think. 



"••■ A good colored figure of H. metathetis kindly .sent me by Mr. Butler jiroves 

 my identification correct, and makes it certain that it is a slight variation only 

 of H. thetis. Maassen's reference of the species to axillaris is wild. 



