1876.] 33 [Scudder. 



anterior lobe subtumescent in the middle posteriorly, and with a 

 broad and deep transverse depression on the front of the posterior 

 lobe, divided into halves by the sharp, but only here at all elevated, 

 median carina ; posterior border crenulate, broadly rectangular, the 

 lateral carinas sharp but not elevated, confined to the posterior lobe. 

 Tegmina as long as the head and pronotum together, broad, subfusi- 

 form, tapering rather rapidly and regularly on the apical half, the 

 apex well rounded, the whole of the color of the thorax, flecked with 

 rather large, roundish, inconspicuous, dusky spots, the larger ones 

 mostly collected in two transverse submedian rows, the smaller ones 

 scattered about the apex. Wings short and broad, lemon yellow on 

 the basal two thirds, or more; beyond it, in the anal field, a trans- 

 verse straight dusky fuliginous band, which unites above with a 

 broader longitudinal similar band running halfway to the base next 

 the upper border of the anal field, and gradually fading; beyond 

 these the wing is pellucid, with black veins, and at the very tip 

 again a little infuscated. Hind femora clay-brown mottled with 

 griseous, the broad superior and inferior expansions grimy, but their 

 extreme edges yellow; the interior surface dark blue, pale salmon at 

 tip; hind tibiae pale coral red, the outer posterior face (and base of 

 spines), especially above, white; tips of spines black. Length of 

 body, 37 mm.; of antennas, 10.5 mm. ; of pronotum, 11.5 mm.; of 

 tegmina, 19 mm. ; of hind femora, 21.5 mm. ; breadth of same, 8 mm. 



1 ?. Sauzalito (near San Francisco), California, June 7, Mr. J. 

 Behrens. Another species of this genus was taken by Baron Osten 

 Sacken, in Sonoma Co., California. 



68. Br achy s tola Behrensii. Of the same size and general 

 appearance as B. magna (Gir.), but differing from it strikingly in its 

 markings and some minor points of sculpture. The carinations of 

 the head are the same ; the eyes are scarcely larger ; antennae luteous, 

 with black incisures on the basal half, blackish fuscous beyond. 

 Sides of the upper surface of the pronotum more declivant, the 

 median carina slightly sharper, the hind border produced and well 

 rounded ; upper surface dark brown mottled with yellowish, the front 

 and hind border of lateral lobes narrowly, and the inferior border 

 broadly, yellowish, the remainder oftho lateral lobes black. Teg- 

 mina a very little smaller than in B. magna, roundish, black, with 

 yellow longitudinal veins. Hind femora noticeably slenderer than 



PROCEEDINGS B. S. N. H. — VOL. XIX. 3 APRIL, 1877. 



