WICKHAM: NEW MIOCENE COLEOPTERA FROM FLORISSANT. 477 
PLECTROTETROPHANES, gen. nov. 
General outline similar to that of Plectrotetra with which it agrees 
also in the open front coxal cavities, the distinctly striatopunctate 
elytra and the relatively slender hind femora. It differs especially 
in the short antennae and the much more abbreviated prosternum 
which allows the front coxal cavities to become widely confluent. 
Type.— P. hagent, sp. nov. 
PLECTROTETROPHANES HAGENI, sp. nov. 
Plate 12, fig. 4. 
Form moderately elongate but probably less so than would be 
inferred from the figure since the specimen is preserved lying on its 
back but somewhat askew. Head of moderate size, eyes rather large. 
Antennae short for the Halticini, second joint more than half as long 
as the third which is a little shorter than the first, the fourth to seventh 
subequal and of nearly the same size as the third. Prothorax much 
broader than long, the exact proportions not ascertainable since only a 
ventral view is shown and the sides are badly damaged. Prosternum 
short and pointed between the coxae, rugose in front of them and not 
visibly carinate. The prothoracie flanks are distinctly but finely 
and sparsely punctate. Mesosternum rather narrowly separating 
the middle coxae, side-pieces nearly smooth. Metasternum very 
fnely punctulate. Elytra showing through the abdominal segments, 
strongly striatopunctate, the punctures circular and well separated, 
the striae subequidistant. Hind femur rather slender though possibly 
shown on edge. Abdomen finely punctulate. Length, 4.50 mm. 
Described from one specimen. 
Type.— No. 2,642 M. C. Z. Florissant, Col. (No. 8,125 S. H. 
Scudder Coll.). 
_ While the nature of the preservation of this insect obscures many 
important features, it seems to be related to the Mexican genus Plec- 
| trotetra in the chief characters shown. None of our North American 
“Halticini with striatopunctate elytra approach it nearly so closely. 
‘Compared with P. dohrnii from Jalapa, the fossil is more coarsely 
sculptured and the striae of punctures are much better marked. Most 
unfortunately the antennae are poorly shown, the joints beyond the 
bn all being lacking or mutilated, but what remains of these 
—o--- ° °° °°” 
