190 THE CANADIAN ENTOMOLOGIST. 



without the surroundings as narrated by Drs. Harris and Fitch. I am 

 therefore incUned to the opinion, born of these facts, that the transform- 

 ation, barring strong winds, is as hkely to occur in the tree as on the 

 ground, and that the branch is eaten away by the young larva not for the 

 extraordinary reasons as cited, but for the more probable one, to prevent 

 the flow of sap, which, if not checked, may render the wood fibre un- 

 wholesome to the larva, or possibly affect injuriously the later condition 

 of pupa and imago. It would appear, moreover, that the beetle is devel- 

 oped in the autumn, and remains within the burrow during the winter. 



MONOGRAPH OF THE EMBIDINA. 



( Coiitimied from page 178.) 



BY DR. H. A. HAGEN, CAMBRIDGE, MASS 



10, Einbia Mauritanica. 



E. Mauritanica Lucas, Explor. Alger., vol. iii., p. 111-114; Neur, pi. 

 3, f, 2, a-n. Cuvier, Edit. Masson, Neur., pi. 106, f. 8 (copy of Lucas' 

 figure). 



E. Mauritanica Lucas, Ann. Ent. Soc. Fr., 1859, ser. iii., vol. vii., p. 

 440-444. 



I have never seen this species, and give the substance of the very 

 detailed description of Mr. Lucas. 



Winged imago : Length of body 13}^ mill.; exp. of wings 16 mill. 

 Body rufo-fuscous, rufous-villous ; head longer than broad, flat, smooth ; 

 depressed transversally behind the eyes ; frontal part reddish ; eyes reni- 

 form, black; antennae 15-jointed, smooth and not villous (as in E. 

 Savignyi), a little paler than the head ; the joints after the 6th succes- 

 sively longer ; labrum and palpi dark rufous ; max. palpi thinner than in 

 E. Savignyi, the two apical joints longer ; labial palpi also more slender 

 and the apical joint longer ; prothorax a little longer than in E. Savignyi, 

 with a transversal sulcus in the apical third ; mesothorax anteriorly 

 between the wings on each side with a yellowish transversal tubercle ; 

 metathorax similar. Legs dark rufo-fuscous, with the usual dilatation of 

 the femur and the basal joint of tarsi of fore legs. Wings as long as 



