242 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



the setae of each. Two narrowly separated setae in the isthmus be- 

 tween the antennae, and another pan of more widely separated setae 

 at the level of the lower edge of the sockets. A pair of widely spaced 

 frontal setae, and a submarginal row of three closely set setae on the 

 lower part of each gena. Clypeal setae long and closely set, in a row 

 of 30 or more; labral setae equally long but wider spaced, about 20 in 

 the series. Genae not margined, nearly flat, with only a vague me- 

 dian depression; the ends broadly rounded and not surpassing adjacent 

 margin of cranium. 



Antennae long (8-9 mm.) and slender, reaching back to caudal mar- 

 gin of 3d segment. Article 1 broadest, short, cylindrical, glabrous. 

 Articles 2-6 subequal in size and shape, each slightly clavate. Article 

 7 very short, slightly conical, the distal edge not in turned between the 

 4 small widely separated sensory cones. Antennae nearly glabrous 

 proximally (the setae of article 2 mostly on the ventral side), becoming 

 increasingly invested distally, the setae of article 6 very numerous, 

 long, and procumbent. 



Collum broad, smooth or finely coriaceous, its caudal edge almost 

 transverse. Lateral thirds of the anterior edge strongly curved caudo- 

 laterad and strongly margined, forming a bluntly acute angle with the 

 posterior edge. Lateral ends of collum not exceeding width of follow- 

 ing segments. 



Tergites of body segments smooth medially, becoming increasingly 

 coriaceous on the paranota, especially toward the end of the bod} 7 . 

 Paranota slightly depressed, inclined cephaloventrad, much longer 

 than median length of the metatergites. Caudal edges of paranota 

 directed caudolaterad on all segments posterior to 4th, becoming in- 

 creasingly angular caudad; paranota of segment 18 forming al- 

 most true isosceles triangles, the apices pointing directly caudad. 

 Paranota of segment 19 forming blunt lobes including only half the 

 length of the epiproct. 



Caudal edges of paranota not margined, lateral ends set off as elon- 

 gate, nearly parallel-sided peritremata (fig. 3,6, PT), the pores opening 

 dorsally near cephalic end of swelling, at about the midlength of the 

 paranota. Anterior to the pore, the peritreme is extended forward as 

 a strong, high marginal ridge (the scapulora), its free edge reflexed 

 caudad over the deeply impressed paranoial surface just behind. In 

 dorsal aspect the scapulorae extend in an irregular line directly mesiad 

 from the scapular convexity, and reveal the anterior face of the 

 paranotum sloping downward At juncture with the body cylinder 

 the scapulorae are so strongly reflexed caudad as to become appressed 

 and merged with the dorsum. 



No distinct interzonal furrow present, the surface of metazonites 

 somewhat lower than that of prozonites, which it meets at a sharply 



