SPIL&ROPHTHALMA. 383 



punctured ; the hair on it longer than on the mesonotum ; at the base is a rather deep 

 transverse furrow. The median segment has an oblique slope, the top rounded ; 

 reticulated all over ; at the base in the centre is a small area wider than long and 

 divided in the centre by a straight keel. The pro- and mesopleurse are coarsely and 

 closely punctured ; the metapleurse smooth, impunctate, and excavated at the base, the 

 rest reticulated. The abdomen is as long as the head and thorax united ; the petiole 

 not quite so long as the second segment, impunctate, covered with long white hair, 

 gradually dilated towards the apex ; the other segments smooth and impunctate, their 

 apices densely fringed with white depressed hair, the other portions being covered with 

 longer more erect hair ; the pygidial area finely and closely rugose, fringed laterally 

 with long white hair, the centre forming a well-marked space, somewhat acutely pointed 

 at the base, the apex transverse. The basal ventral segment is punctured, the punc- 

 tures large and widely separated; the central part projecting, terminating in a blunt 

 edge ; the sides have two keels. The following ventral segments are impunctate, more or 

 less infuscated, their apices densely fringed with long white hair, the other parts having 

 also long white hair ; the apical segment with widely separated punctures, the apex in 

 the centre depressed, sparsely covered with long white hair. The legs are pale yellow, 

 covered with long white soft hair; the tarsal joints slightly infuscated at the apex; 

 the long spur of the hind tibiae reaches beyond the middle of the metatarsus. The 

 radial cellule is twice the length of the stigma. The radius commences at the basal 

 third of the stigma ; at the base it is oblique, but the oblique part is not clearly separated 

 from the rest ; at the apex it is rounded. The base of the second cubital cellule is 

 almost triangular. The first transverse cubital nervure is a little curved and is longer 

 than the first abscissa of the cubitus. The first (and only) recurrent nervure is received 

 in the basal third of the cubitus, which is angled where it is received ; the cubitus is 

 obsolete beyond the second transverse cubital nervure. 



S.phylacis is closely allied to S. eubule, of which it may be a form; but, judging 

 from the material at my command, the present insect is larger and stouter ; the antennae 

 are thicker, with the third joint longer, compared with the fourth ; the mesonotum is not 

 so strongly punctured ; the scutellum is not so much narrowed towards the apex; the 

 median segment is longer and not so strongly reticulated ; the depression in the centre 

 of the mesosternum is narrower and less well marked; the petiole is more slender; the 

 abdomen is broader and more pilose; and the second transverse cubital nervure is 

 received nearer the middle of the radial cellule. 



139. Sphserophthalma eufoule. 



Ferruginea, longe dense pallide pilosa ; abdominis apiee nigro-fusco, thorace supra reticulato ; alis clare 



hyalinis, nervis stigmateque flavis. J . 

 Long. 11 inillim. 



Hab. Mexico, Northern Sonora (Morrison). 



