414 PROCEEDINGS OF THE NATIONAL MUSEUM. voi..xxvii. 



and fortuately a male and a female of each. The smaller {tulereulatus) 

 has been described (p. 393); the other is a larger species, lacking- the 

 frontal tubercle and differing in various other details. 



Female: Head broadly rounded from occiput to frontal notch, which 

 is minute and inconspicuous. The lower row of genal bristles with 

 three members, the middle a little higher than the others and much 

 smaller. The upper row is represented by one rather small bristle on 

 the margin. The gena, below the eye, is posteriori}' broad and trun- 

 cate. Antennal groove with a number of small rather stout hairs on 

 the hind margin. The second joint of antenna with about ten ])ristles, 

 which extend beyond third joint. The hind margin of the head has 

 two or three bristles above and the usual stout one on either side 

 l)elow. One spine occurs on the disk of the vertex l)ehind the middle 

 of the antennal groove. The mandibles extend to one- third of the 

 anterior femora. 



The thoracic tergites each have a transverse row of al)out twelve stout 

 bristles and one distinct row of smaller ones. The pronotum has the 

 usual long spine on each lateral angle and on the hind margin a cte- 

 nidium of about twenty" stout black spines. The bristles on the abdo- 

 men are all unusually long and stout. Most of the tergites have about 

 eighteen bristles in the principal row, and sixteen to twenty in the 

 smaller row. The metanotum and first two tergites each with two 

 small teeth on either side of hind margin. Antepygidial bristles three 

 on each side, the inner in each group shortest, the middle longest, 

 though not exceeding pygidium. Most of the sternites have a prin- 

 cipal row of about twelve stout ))ristles, and four or six bristles in a 

 second row\ Beneath the pygidium on either side there are four large 

 bristles, the two outer shorter. The eighth segment on either side 

 below with a))out three rows of four bristles each. 



Style slightly swollen ))elow and narrowed to the apex, where there 

 is a long, stout l^ristle, below which is a shorter one; behind the apical 

 bristle is a transverse row of still shorter ones. Substjlar flap with 

 several longer bristles at the tip and a dense brush of short bristles on 

 the lower margin. 



Hind coxffi without minute teeth inside. Hind femur wnth a longi- 

 tudinal row of about nine minute bristles on the side. A spine on the 

 apex of second joint of hind tarsi equals joint III and IV together. 

 Spines on under side of tifth tarsal joint similarly placed in rows of 

 five on either margin. Lengths of hind tarsal joints in the proportion 

 19-11-8-5-9. Length 3.5 mm. 



Male: Head flattened and thickened aV)ove in the usual manner. 

 Middle bristle in lower row on gena longer than in female. Two bris- 

 tles occur in upper row, the first above the first of the lower row. The 

 ))ristles on the hind margin of the antennal groove are larger and fewer 

 than in female. Only one large antepygidial bristle occurs on either 



