ART. 19 PLANT AND INSECT FOSSILS COCKERELL 9 



lobes with low obtuse teeth at intervals of about 7 mm, and only faint 

 indications of denticulation between. The points in no case as dis- 

 tinctly produced as in Z. styraciflua. I am unable to see any pubes- 

 cence in the axils of the veins (it is absent in L. orientalis Miller of 

 Asia Minor), but the state of preservation admits of no certainty 

 in this regard. Fruit about 15 mm. in diameter, on a slender stalk, 

 in all respects typical of the genus, the hardened projecting styles 

 very numerous, slender, and straight or nearly so, features which 

 distinguish the species from L. europaemn A. Braun. 



Green River Eocene, Roan Mountains, Colorado, leaf found at 

 Station 2 of 1922 expedition (head of Salt Wash) by John P. Byram. 

 This may be taken as the type. 



H oloty pe.—Cdit. No. 36861, U.S.N.M. 



Fruit found by Mr. Byram at head of East Alkali Gulch about 

 eigth miles south of DeBeque, Colorado. The probability that the 

 fruit and foliage belong together is so strong that this is presumed 

 to be the case. This is not the European Miocene L. europaeum^ the 

 leaves of which agree in form and outline with L. styraciflua. (On 

 the view that names of trees are feminine, we ought to write L. 

 europaea). The so-called L. europaeum described from the Ameri- 

 can Eocene may be at least in part identical with L. callarche. 



L. convexum Cockerell, from Florissant, is distinguished from the 

 present species by the convex sides of the middle lobe of the leaf. 



INSECTA 



COLEOPTERA 



Family ELATERIDAE 



CARDIOPHORUS EXHUMATUS. new species 

 Plate 2, fig. 2 



Length 9 mm., elytra 6 mm.; width of thorax 2.7 mm., length 

 about 2.3 mm.; width of elytra in middle 1.5 mm. Thorax with 

 sharply pointed posterior angles; elytra narrow, subacute, with 

 eight very delicate, not punctate, striae, the whole surface appar- 

 ently delicately pubescent. The metasternal cavity, middle coxal 

 cavities, metasternum and hind coxal plates appear to agree with 

 Cardiophorus^ as also the delicately hairy feebly striate elytra. On 

 comparison with the living C. pubescens Blanchard, from White 

 Rocks, Boulder County, Colorado, the hind coxal plates are more 

 pistol-shaped, narrower mesad, with the upper margin convex and 

 the lower (posterior) concave. Also, the metasternal plates appear 

 to be more obtuse or rounded at the outer hind corner than in 

 C. pubescens. The scutellum is unfortunately not preserved. The 

 elytra are without spots. 



