414 THE CANADIAN ENTOMOLOGIST. 



subequal yellow spots, one somewhat obliquely subquadrangular at two- 

 fifths and inner third, another rather smaller, rounded and marginal, just 

 visibly less basal and truncated by the margin, and another, somewhat 

 transversely oval, near the apical margin, and much more distant from the 

 suture ; beneath black, the abdomen pale niarginally, the legs pale. 

 Length, 2.6 mm.; width, 2.0 mm. Arizona (Nogales), Nunenmacher. 



To be classed with i/iedia/is, but not closely related, much larger, 

 with slightly more anterior discal spot and piceous head in the female. 

 The head is pale in both sexes of medialis. 



H. /astidiosa, n. sp. — Broadly suboblong-oval, convex, black, 

 polished, finely though rather strongly and closely punctate ; head ( ^ ) 

 dark rufo-piceous, gradually becoming blackish basally and yellowish 

 apically ; pronotum with a large yellow spot, internally angulate and wider 

 than long, at each bide ; elytra each with three large yellow spots, one 

 elongate-oval, from basal seventh to the middle and inner sixth to just 

 beyond the middle ; another, marginal, from the humeri to apical third, 

 acuminate anteriorly, and gradually though moderately dilated posteriorly, 

 the third large, subobtriangular, very close to the apical margin, and but 

 little further from the suture ; beneath black, the abdomen nubilously pale 

 marginally, the legs pale. Length, 2.2 mm.; width, 1.65 mm. California 

 (San Diego), Nunenmacher. 



H. co7ispirans^ n. sp. — Smaller, less broadly and more evenly oval, 

 convex, polished, black, finely, less closely punctate; head ( ^ ) bright yellow- 

 ish-white, abruptly black only at the base of the occiput; pronotum with a 

 large internally arcuate yellow spot, as wide as long, at each side ; elytra 

 each with three rather large similarly straw-yellow spots, one rounded, 

 from basal fourth to the middle and inner fifth to a little beyond the median 

 line ; another, marginal, semicircular, at the middle and the third 

 somewhat smaller, slightly irregular, subtransversely oval, distinctly 

 separated from the apical margin, and subequally so from the suture ; 

 under surface black throughout, the legs black, the anterior pale. Length, 

 1.6 mm.; width, i.i mm. Arizona (Nogales), Nunenmacher. 



Both of the above species are allied io ge?njna^ the first differing in its 

 very differently coloured head in the male, and total absence of the con- 

 spicuous yellow apical thoracic margin of genuna. The second has the 

 same pale yellow head in the male, but lacks the pale apical thoracic 

 margin or any indication that it could exist, as the lateral spots are 



