SPMROPHTHALMA. 335 



the vertex with a large mark of golden pubescence, its sides with some long black 

 hairs ; the front with some pale golden pubescence ; the apex of the clypeus rounded ; 

 the base of the mandibles broadly ferruginous, and covered with long pale hairs, 

 furrowed. The scape of the antennae covered with silvery hair ; the flagellum with 

 silvery pubescence ; the third joint twice the length of the fourth. The thorax is 

 coarsely punctured, not very much longer than the head, and narrowed towards the 

 apex ; the base is rounded ; the apex sharply oblique ; the middle with a shallow 

 indentation ; along the sides are two belts of golden pubescence. The basal segment 

 of the abdomen bears long white hair. The second segment bears short depressed 

 black hair, and laterally a silvery pubescence ; at the base are two small pale orange 

 marks, and nearer the apex are two large transverse oval maculae of golden hair. The 

 third to the fifth segments are finely and closely punctured at the apex, and fringed 

 with pale silvery hair. The pygidium is densely covered with golden pubescence. 



The next species agrees almost in coloration with S. phedyma and S. lycimnia, it 

 having the head covered with a dense fulvous pubescence, this being also the case with 

 the mesonotum, and the abdomen has two large and two small orange marks, the legs 

 being black. S. sonorensis, however, may be easily separated from these species by the 

 head being broadly rounded posteriorly, and not keeled down the edges, it being also 

 convex, not slightly concave behind. 



40. Sphaerophthalma sonorensis. (Tab. XIV. fig. 18, $ .) 



Long. 8 millim. $ . 



Hdb. Mexico, Northern Sonora (Morrison). 



Entirely ferruginous, except the apical segments of the abdomen, which are blackish 

 in the middle. The head densely covered with pale hair, small, much narrower than 

 the thorax, rounded in front, almost transverse behind; the eyes not projecting; the 

 part behind them not much longer than their width, hardly narrowed, the edges 

 rounded ; the tips of the mandibles blackish. The antennae thick ; the scape bare ; 

 the third joint rather more than one-half longer than the fourth. The thorax twice 

 the length of the head ; the base transverse, raised above the level of the head ; the 

 sides straight, without teeth or tubercle, not, or hardly, narrowed towards the apex ; 

 densely covered with long pale hair ; the apex of the median segment with an oblique 

 slope. The pleurae are shining and covered with long white hair. The abdomen is 

 longer than the head and thorax united ; the base rounded ; the segments from the 

 second becoming gradually and rather sharply narrowed towards the apex; the second 

 segment strongly punctured, the punctures clearly separated ; the third, fourth, and 

 fifth segments fringed with silvery pubescence ; the pygidium smooth, shining, im- 



