ANTnRFHID.T:— TROPIDERna. 161 



Head miidi linijivr than liig-h ; nt.struiu nearly twice as loiiji- as the rest 

 ot the liead, the front border arcuate; antennal scrobes subcireular, shaqtlv 

 definf'd, separated from the tip l)y less than their own width. Antennfv 

 fnlly hiilfas long again as the body, slender, first joint globose, second of 

 similar length but smaller, and shaped like the apical portion of the succeed- 

 ing third to ninth joints, which are elongate, subequal, apically clubbed, the 

 enlarged apex of the ninth forming with the two succeeding, which are half 

 as long again as broad, an elongate oval club about twice as stout as 

 the stem of the middle joints. Eyes small, oval, transverse. Prothorax 

 apparently quadrate, slightly tapering, scarcely so broad as long. Elytra 

 considerably longer than head and prothorax together, gently arched. Legs 

 slender, the front pair similar to the others. 



A single species occurs at Florissant. 



Saperdirhynchus pkiscotitillatou. 

 PI. I, Fig. 12. 



Head (including also at least the basal half of ro.strum, prothorax, and 

 elytra) uniformly, finely, closely, and rather delicately granulate, the granules 

 circular except on the elytra, where they show a tendency to become longi- 

 tudinal, the cause perhaps of their presenting a pectinate appearance, 

 though this is more probably due to the linear arrangement of the long re- 

 cumbent hairs, which lie in series about a fiftieth of a millimeter apart; 

 the elytra also show faint moderately narrow ridges about one-fifth of a 

 millimeter apart more clearly on one stone than on the other. Antenme 

 clothed sparsely with recumbent hairs half as long as the width of the 

 joints; the joints are better shown on the vertical than on the oblique an- 

 tenna on the jjlate. 



Length of body, 7-5"""; of head and rostrum, 3™"'; of elytra, 4-5°""; <if 

 antenna', 12"™; of one of the middle joints of antenna?, 1-6°"". 



Florissant, Colorado. One specimen, Nos 6000 and 6001. 



TRUPIDEKES Sch.-.nheiT. 



One of the most extensive genera of the fann'ly, having about fifty 

 species, of which neaily lialt' are found in .Viuerica, the others in various 

 MON XXI 11 



