WICKHAM: NEW MIOCENE COLEOPTERA FROM FLORISSANT. 469 



differs in the proportions of the antennal joints, which, in Ipochus, 

 decrease rapidly in length from the third to the fifth. The legs of 

 Protipochus are rather short, the thighs strongly clavate, but owing 

 to their showing through the specimen they are not represented in the 

 gross figure. The detail will give an idea of the appearance of the 

 middle leg. 



I take pleasure in giving this species the name of Dr. Edwin C. 

 Van Dyke of San Francisco. 



LEPTOSTYLUS SCUDDERI, sp. nov. 

 Plate 10, fig. 5. 



Form moderately elongate. Head with prominent jaws. Antennae 

 slender, about one and three fifths times the length of the body, first 

 joint long, subcylindrical, second short, third barely longer than the 

 first, fourth subequal to the third, fifth, and sixth a little shorter, the 

 remainder not distinctly separable. There is no visible antennal vesti- 

 ture. Prothorax nearly twice as broad as long, sides arcuate with no 

 defined spine nor tubercle. Elytra long, four and a half times the 

 prothoracic length, strongly tapering from about the middle to the 

 apices which are moderately sharply painted but unarmed. Legs 

 lacking except one which probably belongs to the middle pair; this 

 is of moderate length and stoutness, tarsal joints ill defined. Length, 

 from front of head to tip of abdomen, 11.35 mm. 



Described from a single specimen. 



Type. No. 2,598 M. C. Z. Florissant, Col. (No. 929 S. H. 

 'Scudder Coll.). 



The facies of this insect is entirely that of a Leptostylus, with which 

 genus it agrees in the antennal and thoracic structures. The long 

 antennae are in accord with those of the recent L. biustus and L. 

 terraecolor. The coloration seems to have been a mottling, arranged 

 in irregular transverse bands, the best marked of which are in the form 

 of two rather broad postmedian fasciae. It will be noted that the tho- 

 racic sides, as preserved, are not symmetrical, the left one showing about 

 the same shape as in L. biustus, while the other is simply rounded. 



PROTONCIDERES PRIMUS Wickham. 



A specimen of a lamiide in this collection, No. 2,599 M. C. Z. (No. 

 13,594 S. H. Scudder Coll.), differs from my type of P. primus in just 



