466 bulletin: museum of comparative zoology. 



Pro thorax broad at base, finely and inconspicuously punctured. 

 Elytra wide at base, rather rapidly tapering to their apices which are 

 conjointly rounded, disk with about ten to twelve striae of fine but 

 sharp regularly spaced elliptical punctures, their long axes following 

 the strial line, these punctures separated by about their own lengths. 

 Interspaces relatively broad, flat, and smooth. Legs showing the 

 femora of the hind pair and one of those of the front, not much thick- 

 ened. Length, from front of head to abdominal apex, 9.25 mm. 



Described from one specimen. 



Type— No. 2,587 M. C. Z. Florissant, Col. (No. 9,165 S. H. 

 Scudder Coll.). 



The best place for this beetle appears to be in Gaurotes with which 

 it agrees in form and antennal structure and fairly well in sculpture 

 which seems to be of a type rather uncommon in the Lepturoides. 

 The recent G. cyanipennis has striatopunctate elytra but the punc- 

 tures are finer and the striae more numerous than in the fossil. 



Leptura nanella, sp. nov, 

 Plate 9, fig. 4. 



Form elongate, fairly slender. Head of moderate size, eye elliptical, 

 the outline hardly well enough preserved to show whether or not it is 

 emarginate. Antenna a little longer than the head and prothorax, 

 slender, not serrate, the joints rather indistinctly set off so as not to 

 allow of separate description. Prothorax, in side view, campanulate, 

 punctuation fine and poorly preserved. Elytron obtuse at tip, 

 strongly and deeply but rather sparsely punctate, the punctures 

 circular, separated on the basal region by about once or twice their 

 own diameters but becoming much finer and more widely spaced 

 apically. Sternal side-pieces nearly smooth. Abdomen finely and 

 sparsely punctate, each puncture carrying a short fine hair. Legs 

 apparently moderately stout. Length, 4.10 mm. 



Described from one specimen. 



Type— No. 2,588 M. C. Z. Florissant, Col. (No. 9,682 S. H. 

 Scudder Coll.). 



A small species, about the size of the recent L. haematites and L. 

 violyhdica. It is smaller than any of the described Florissant forms 

 of this genus, the nearest approach in this respect being L. leidyi 

 which reaches a length of 7.50 mm. 



