54 PAPERS BY DR. B. CLEMENS. 



conceals it, not as long as the body and about one-half as 

 long as the fore-wings. Maxillary palpi very short, scaly 

 and concealed beneath the labial palpi. Labial palpi cylindric, 

 with a tuft of hair beneath, and with lateral bristles ; the third 

 article smooth and quite short. Tongue not quite as long 

 as the palpi. Wings exceeding the body ; the anterior 

 oblong-ovate, with elevated tufts of scales; the posterior 

 ovate, with the costa excavated at the insertion of the costal 

 nervure. 



(fi'fyjkh't X. primiramiella.* Antennas yellowish-white. Palpi 

 and head hoary. Thorax hoary, dusted with brownish. 

 Abdomen dark brown. Fore-wings blackish-brown and 

 luteous-brown, somewhat varied with whitish, with patches 

 of elevated scales at the base and along the fold ; with an 

 indistinct whitish band crossing the middle of the disc, one 

 nearer the base still fainter and one about the end of the disc, 

 with a white dorsal spot at the inner angle and a whitish 

 streak from the costa above it, with another whitish costal 

 streak between this and the tip; a blackish spot at the tip, 

 white-margined before; cilia brownish, white at the dorsal 

 spot. The luteo-brownish hue usually prevails toward the 

 tip of the wing, and sometimes the whitish markings are 

 indistinct. Hind-wings dark brown, somewhat tinged with 

 reddish, cilia the same. Exp. al. 6 to 6*5 lines. 



The larva of this insect feeds on the woody excrescences 

 found on the branches of the plum tree. These nodose 

 tumours have recently attracted the fruit-grower's attention, 

 but I am unable to say whether the larva is the cause of the 

 disease. It does not confine its operations to the cortical 

 portions of the node, but bores the wood likewise. I have 

 found it associated with another much larger larva, but the 

 imago of the only specimen I received, escaped from the 

 vivarium before I saw it. Both pass the winter in the larval 

 state, and may be taken in recent excrescences, during the 



* Dr. Clemens sent me two specimens of this insect ; it appears allied to 

 Ochsenheimeria and Hajjai/e?^. H. T. S. 



