a 
436 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
but not widely separated. Hind coxae oval, transverse, contiguous 
or nearly so. Abdominal segments subequal except the first and last 
which are longer. 
Type.— P. tenuicornis, sp. nov. 
PROTACNAEUS TENUICORNIS, sp. nov. 
Plate 4, fig. 5. 
Form short, stout. Head incompletely preserved but of large size. 
Eye large, rounded. Antennae probably broken and with the joints 
of the proximal half not distinguishable as such, those of the distal 
half slender and about twice as long as wide. Prothorax broad at 
base, narrowed to apex the sides poorly preserved. Elytron, seen 
from beneath, showing traces of strial punctures, neither deep nor 
coarse, the striae moderately distant, punctures round, those of each 
row separated by about their own diameters. Underside of trunk | 
not visibly sculptured. Legs wanting. Length, to tip of abdomen, 
4.60 mm. . | 
Described from one specimen. | 
Type— No. 2,466 M. C. Z. Florissant, Col. (No. 9,227 S. H. 
Seudder Coll.). | 
Like the other Florissant Dascyllidae, this species fails to agree very 
well with the living forms. It seems to require a new genus for its | 
reception. It belongs to the Eubriini near Acnaeus which occurs 
today on our Pacific coast. | 
| 
Is 
\ 
MI0CYPHON, gen. nov. | 
; } 
Body form similar to that of the elongate species of Cyphon. An- 
tennae widely separated at base, 11-jointed, basal joint obscured, 
second smaller than the third, third to seventh subequal, scarcely. 
serrate, distinctly longer than wide, eighth to eleventh longer, though , 
not excessively so, a little wider than those preceding. Coxae not wel! 
defined on account of portions of the legs remaining in place, obscuring 
the view, but the front pair were approximate or contiguous, the middle | 
well separated, the posterior nearly or quite contiguous. | 
Type.— M. punctulatus, sp. nov. | 
