6 
II.-DESCRIPTION OF THE SPECIES. 
RHYNCHOTA. 
Sub-order — HOMOPTERA. 
Family — Cl CA T>TT)yF. 
Genus — CICADA, Linnaeus. 
Cicada ? Lowei, sp, nov. 
Plate I, Pig. 1. 
Sp. Char. — Elongate, moderately robust, the three divisions of the 
body — bead, thorax, and abdomen — very distinct; head rather large and 
broad, Avith a lateral tuft of sette on each side at the base ; no antennae, 
rostrum, eyes, or ocelli Ausible ; thorax longer than broad, truncate both 
before and behind, the sides rounded ; abdomen nearly one-half longer than 
the head and thorax together, slightly constricted at the base, narrowed pos- 
teriorly, with se\"en distinct segments of nearly equal length ; Avings ample, 
rather narrow, reaching considerably beyond the extremity of the body, 
evidently hyaline ; fore- wing with the costa slightly arcuate, rounded at tlie 
extremity, the venation chiefly longitudinal, a hind-marginal vein unites tlie 
longitudinal veins, and cross-veins dmde the apical from the basal area of 
the wing at a point about its middle ; hind- wing much shorter than fore-wing. 
Length, 16 mm. ; length of fore-wing, 14 mm. ; greatest width of abdomen (at 
second segment), 5 mm. 
Ohs . — This fossil is provisionally referred to the Cicadida?, as its 
general form and the plan of the venation of its fore-AAungs, as far as can be 
judged from the limited material at our disposal, seem to forbid its inclusion 
in any other family. The presence of a marginal vein uniting the longi- 
tudinal veins at the extremity of the fore-wings, and the fact that cross-veins 
exist near the middle of the wing.s — serving, it seems to us, as an indication 
of the point where the ulnar and apical areas may be distinguished— are 
characters which give strong support to this view ; and there is additional 
evidence in the structure of the thorax, inasmuch that it presents two con- 
spicuous divisions corresponding to the j)i’onotum and mesonotum. But, in 
