516 bulletin: museum of comparative zoology. 



seum of the University of Colorado; No. 6,572 of the Princeton col- 

 lection; and No. 2,734 M. C. Z. (No. 11,664 S. H. Scudder Coll.). It 

 is possible that No. 2,735, 2,736 M. C. Z. (No. 8,340, 10,492 S. H. 

 Scudder Coll.), represent the same species. 



Characters pointing to Limonius are seen in the coxal plates, hind 

 tarsi, prosternal sutures, and antennae. The short prosternal lobe 

 is more like Nothodes. Compared with L. aboriginalis, the present 

 species is much more roughly sculptured. 



Limonius praecursor, sp. nov. 

 Plate 5, fig. 8, 9. 



Form elongate, slender. Head finely but very regularly and dis- 

 tinctly punctured, the punctures separated by their own diameters 

 or less. Antennae short, showing only a few of the joints well enough 

 for description, but these are about one half longer than wide and 

 weakly serrate. Prothorax punctured similarly to the head but a 

 little more finely, the sides not in very good condition but evidently 

 subparallel, length and width subequal. Scutellum obscure. Elytra 

 about two and two fifths times the prothoracic length, subparallel, 

 finely but very distinctly striate, the striae with decidedly elongate 

 punctures which are separated in each row by their own diameters, 

 a little more or less, interstitial spaces broad and flat, very minutely 

 pimctulate. Underside of prothorax finely but clearly punctured, 

 rather closely on the flanks, less so on the prosternum, sutures double, 

 a little curved in front, nearl}^ straight behind, broader anteriorly, 

 lobe moderate. Length, from front of head to elytral apex, 8.50 mm.; 

 of elytron, 5.75 mm. 



Described from one specimen, with counterpart. 



Type.— No. 2,730 and 2,731 M. C. Z. Florissant, Colo. (No. 

 9,417 and 10,558 S. H. Scudder Coll.). With it is doubtfully asso- 

 ciated another specimen, also with counterpart. No. 2,732 and 2,733 

 M. C. Z. (No. 12,049 and 12,762 S. H. Scudder Coll.). 



In general form and sculpture, this approaches closely to L. floris- 

 santensis. However; the present insect has relatively shorter elytra, 

 with markedly finer and sparser cephalic and prothoracic punctuation. 



