470 PROCEEDING.^ OF THE NATIONAL MUfSEUM. vol.52. 



Described from one specimen. My first impression was that this 

 beetle belonged to the Clytini, but the antennae are not of the right 

 structm"e. They arc more hke those of some CaUidioides, notably 

 the recent North American CaUidium aereum, and since no generic 

 characters show which are available for separation, I have placed the 

 fossil in that genus. The antenna! structure will serve at once to 

 differentiate this from all similar described Florissant fossils. The 

 detail figure shows the sudden reduction in size of the distal four 

 joints. 



Genus BRUCHUS Linnaeus. 



BRUCHUS ANTAEUS, new epeciea. 



Plate 38, figs. 6, 7. 



Form fairly elongate. Head small. Eyes not large nor prominent. 

 Antemiae short, thick, joints beyond the third somewhat serrate 

 but not strongly so. Prothorax transversely subelliptical, very 

 nearly twice as broad as long, apex narrower, sides strongly and regu- 

 larly arcuate, sculpture fine, obscure. Elytra about three and one- 

 half times the prothoracic length, delicately striate, striae hardly 

 visibly pmictured, interspaces flat, broad, minutely roughened. 

 Legs not preserved. Length, from front of head to abdominal apex, 

 9.20 mm.; of elytron, 5.10 mm. 



Tifpe.—C&t No. 63450 U.S.N.M. 



This smgie specimen is by far the largest of any of the Florissant 

 fossil Bruchids, being more than half as long again as B, howditclii, 

 from these shales, which it resembles quite strongly in form, antennal 

 structure and elytral sculpture. The present insect has a much 

 more transverse prothorax and is imdoubtedly distinct. 



Genus PANDELETEINUS Champion. 



PANDELETEINUS NUDUS, new species. 



Plate 39, fig. 4. 



Form stout. Head fhiely but pretty deeply and very closely, in 

 part confluently pmictured, with a tendency to form transverse 

 rugae, 4he portion normally covered by the prothoracic front margin 

 extremely minutely, transversely strigulose. Eye small, subcircular, 

 nearly central m position. Beak not fully defined but evidently 

 short and broad. Antennae concealed or lost. Prothorax much 

 higher than long, a trifle more closely and much more rugosely punc- 

 tured than the head, the individuality of the punctures largely lost 

 m a confluence which tends to form longitudinal rugae. Elytra 

 moderately arched, deeply striate, strial pmictures strong, large, 

 deep, and rounded, separated in each series by less than their own dia- 

 meters. Literstitial spaces rather broad, convex, not punctured 



