^02 PROCEEDINGS OF THE ACADEMY OF [Marchj 



Size medium (25 mm.); body fusiform; surface rather polished, the 

 abdomen and forceps finely punctate, the whole sparsely beset with 

 stiff bristles, and the abdominal segments fringed with fine hairs. 

 Head considerably broader than the pronotum. Pronotum slightly 

 longer than broad; the anterior margin subtruncate, the posterior 

 rotundate; the median region bearing a shallow sulcation, deepest an- 

 teriorly. Meso- and metanotum with the tegmina and wings incom- 

 pletely developed. Abdomen rather broad, the four anterior segments 

 with the lateral folds but slightly developed. Anal segments large, 

 subquadrate, the posterior constriction being slight; median sulcus 

 slightly developed posteriorly. Forceps of medium length, robust, 

 triangular in section, the right more curved and less hooked than the 

 left, and crossing the latter; internal margins minutely undulate, ex- 

 hibiting no signs of true teeth. Femora short and robust, the greatest 

 thickness being toward the base. Tibiae slightly shorter than the 

 femora in the median pair of limbs, equal in the others. 



General color blackish-brown; clypeus, labrum, mandibles, tibige 

 and tarsal joints dirty yellow (gamboge); femora of the general color 

 with an apical ring of dirty yellow. Antenna? dull-brown with the 

 first, second, thirteenth and fourteenth joints yellow. 



Measurements. 



Largest Average of three 



Specimen. specimens. 



Total length, 25.0 mm. 22.7 mm. 



Length of pronotum, 3.2'' 28" 



Width of pronotum, 3.0 " 26 " 



Length of forceps, 45 " 37 u 



Length of anal segment, 3.1 " 2 7" 



Anterior width of anal segment, ... 5.1 " 4.2 " 



The other stage, which represents a lower and more undeveloped 

 type than that described above, is represented in the series by a single 

 specimen. 



Size rather small (13.5 mm.); body subfusiform, the greatest width 

 being abdominal; surface moderately polished and with stiff bristles 

 generally distributed, the apical dorsal segments of the abdomen being 

 margined with fine hairs, which are also present on all the ventrals. 

 Head rather elongate, broader than the pronotum. Pronotum about 

 as broad as long, the anterior margin subtruncate, the posterior ro- 

 tundate; median sulcus distinctly marked. Mesonotum posteriorly 

 truncate; metanotum centrally emarginate. Abdomen broad, each 

 dorsal segment (except the apical three) with the posterior n'largin 



