OF WASHINGTON. 341 



plants above the surface of the ground ; the larvae of a few species 

 (bicolor, elongatus, myagri, and tnucidus} are crown-borers t or 

 even bore in the roots of plants ; two of our species, concavus 

 and macer, girdle the stems from within, while musculus and 

 parcus form galls or swellings on the stems which they inhabit. 



The more strongly developed anterior femora in macer ap 

 pear not to have been generally observed, and would lead us to 

 look for some habit of this species differing from those of its con 

 geners, and calling for superior muscular powers and greater 

 length of these parts. 



Mr. Schwarz remarked that the discovery of the food habits of 

 Lixus rubellus should not be credited to Dr. Lintner, but to Mr. 

 Fred. Blanchard, who published a note on the subject in the first 

 volume of Psyche. 



Mr. Hubbard then sead the following : 



DESCRIPTION OF THE LARVA OF AMPHIZOA LECONTEI. 

 BY HENRY G. HUBBARD. 



Body elongate, fusiform, widest in the middle, regularly arcuate on the 

 sides, tapering gradually to a conical tip, strongly convex above; the 

 dorsal shields chitinous. entirely covering the segments, and with broadly 

 explanate margins ; beneath moderately convex, not chitinous. Color 

 above varying with the moults from testaceous to piceous ; the head 

 darker; beneath yellowish white; head, legs, and tip of body testaceous. 

 The upper surface with fuscous markings obliquely crossing each seg 

 ment, commencing with the mesothorax, and forming, when the body .is 

 contracted, two dorsal and two submarginal bands, the former more 

 sharply defined than the latter. The prothorax shows on either side of 

 the dorsal face a cluster of translucent spots, like dots and dashes of the 

 Morse alphabet, produced by indentations reducing the thickness of the 

 chitine; each of the following segments with a smaller cluster of similar 

 spots. Chitinized portions of the body strongly punctured, in some places 

 transversely rugose, sparsely covered with procumbent bristles curved 

 at the ends. A deeply incised median furrow from the head to the apex 

 of the body. Length, 12-13.6 mm. ; width, 4.1 mm. 



Head rather large, hexagonal, more convex below, widest behind the 

 middle, angularly narrowed behind, minutely narrowed anteriorly; genae 

 forming a ridge, curving upwards, not reaching the posterior margin ; 

 front margin above and below nearly straight ; hind margin above straight, 

 below sinuous; upper surface with shallow foveie on the vertex, each 

 branch of the Y-suture ending in a deep sinus at the base of the mandible; 

 underside with anterior border rising abruptly from a broadly arcuate 



