LEPTURID.L. 183 



DESCRIPTION. 



Body rather short, black, downy, minutely punctured. Head very thickly and minutely punc- 

 tured, obsoletely channelled; antennas slender, shorter than the body, fifth joint considerably longer 

 than the fourth : prothorax shaped as in the preceding species but less depressed posteriorly ; very 

 thickly as well as minutely punctured : scutellum triangular : elytra pale-yellow, with an arched black 

 spot at the base, then follows an interrupted band consisting of three acute black spots placed in a 

 triangle, beyond the middle is a dentated black band which reaches neither the suture nor the lateral 

 margin ; the apex also, the suture, and the lateral margin towards the apex, are all black. 



Variety B. Head not channelled : spot at the base of the elytra coalescing with the intermediate 

 and lateral ones of the anterior band, and reaching the lateral margin ; interior 

 spot reaching the suture so as to form the half of a spot common to both elytra; 

 the intermediate band is broader and reaches both the suture and lateral margin. 



* tt a- 



(246) 8. * Leptura semivittata. Half-striped Leptura. 



L. (semivittata) linearis, nigra, supra nitida, subtus argenteo-sericea ; elytris vitta dimidiata, flexuosa, lutea, apice truncatis. 

 Half-striped Leptura, linear, black, above glossy, underneath silvery from silky hairs ; elytra with a luteous flexuose stripe 

 reaching half their length ; truncated at the tip. 



Length of the body G lines. 



Taken in Canada by Dr. Bigsby. 



description. 



Body long and narrow, black, underneath slightly and minutely punctured, with the sides of the 

 breast and abdomen brilliant with a silvery lustre from decumbent silky hairs, above glossy and almost 

 naked. Head thickly punctured, but behind each eye there is a levigated space ; antenna; longer 

 than the prothorax, intermediate joints not slenderer than the others, the fourth as long as the fifth ; 

 neck short and levigated : prothorax bell-shaped, not constricted anteriorly, depressed posteriorly ; 

 thinly punctured, especially in the disk : scutellum triangular : elytra punctured but not thickly, 

 punctures almost arranged in rows, towards the apex they are very slight ; a reddish-yellow subflex- 

 uose stripe runs from the middle of the base of the elytra a little more than half way towards the 

 apex, which is diverging and truncated : the ventral segments of the abdomen terminate in a reddish 

 membrane. 



