10 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 66 



IDlate with a low but very sharp keel, beginning at the top, lower 

 part of the plate strongly narrowed by the ridges, the vibrissae 

 twice the length of the second antennal joint above the mouth; 

 facial ridges swollen below and convergent, covered with several 

 rows of short, spiny hairs, which extend upward in one or two 

 rows almost to the level of the arista ; palpi rather short, flat ; pro- 

 boscis very short, with fleshy labella, front of male nl)ove about 

 one-seventh the head-width, ocellar bristles, verticals, and upper 

 frontals reduced to hairs, the lower frontals gradually larger, end- 

 ing at insertion of antennae; parafrontals hairy down to same 

 point. Lower part of head without bristles except about three pairs 

 below vibrissae. Third antennal joint three to four times as long 

 as second; arista with a few rays of moderate length above near 

 base, and one or two below. Eyes bare. 



Thorax nearly bare of bristles above, of the dorsocentrals only 

 the hindmost are distinct; scutellum without discal bristles; post- 

 scutellum not developed; prostemum, pteropleura, and hypopleura 

 bare ; sternopleura with a single bristle in the anterior upper corner 

 and a considerable row of mixed bristles and long hairs along the 

 upper edge posteriorly. Abdomen entirely destitute of bristles; 

 first sternite hairy, 2 to 5 broad and hairy ; genitalia small. Calyp- 

 ters large, bare, the hind ones much larger and longer than the 

 others. Hind tibia without calcar. 



BAUOGLUTUM ILLINGWORTHI, new species 



Male. — Front 0.14 of the head- width at vertex, very gradually 

 v.idening below; parafrontals and parafacials golden poUinose, a 

 changeable dark spot at the level of the antennal insertion; para- 

 facials without hairs, shining; antennae reddish, the third joint in- 

 f uscated at tip and on upper side ; palpi reddish-yellow ; bucca one- 

 fourth the height of head. Mesonotum, scutellum, and abdomen dot- 

 ted all over with minute darker spots on a dense gray poUinose 

 ground, the mesonotum showing four rather distinct darker stripes 

 in front, abdomen not at all tessellated, scutellum with shining 

 black border. Pleurae subshining black. Chaetotaxy : Dorsocentrals 

 0,1 (and a few hairs in the row) ; acrostichals 0,1 (an indistinct 

 smaller pair close to the prescutellars) ; humeral 3 ; posthumeral 1 ; 

 presutural 1; supraalar 3; intraalar 1 (behind); postalar 2 or 3; 

 scutellum with 4 marginal, 2 submarginal, no discal; prothoracic 

 a strong tuft. Calypters white. Wings glassy hyaline, veins brown. 

 Legs black, with few bristles except the front femora, which 

 have the usual two rows above and one on lower hind side. Hind 

 tibia with short cilia on outer hind side. 



Female. — Front at vertex 0.24 of head-width ; no orbital nor cru- 

 ciate bristles. 



