O PROCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



clypeus projecting more than in the other genera, angular in profile. 

 Thorax with one pair of quite well developed prescutellar dorso- 

 centrals, and from one to three much shorter pairs in front of them, 

 becoming progressively shorter anteriorly; the other bristles consist 

 of: 1 humeral, 2 notopleurals, 1 supra-alar, 2 postalars, one })air of 

 prescutellar acrostichals, and one mesopleural: seutellum not longer 

 than thorax on dorsum, gradually widened from base to middle, from 

 there slightly narrowed, and broadly rounded at apex ; basal bristles 

 situated on disk, separated by about one-third of the width of seu- 

 tellum, and not over one-fourth from base, the apical pair situated 

 on extreme edge about one-third from apex, and upwardly directed. 

 Legs as in the other genera, but the hind tibia has a strong, black, 

 slightly curved, apical ventral spur which is almost as long as hind 

 metatarsus. Wings as in the other genera, the discal cell not sep- 

 arated from basal cell by a cross vein. 

 Genotype. — The following species. 



IDIOCELYPHUS BAKERI. new species 



Shining brownish testaceous ; clj'pcus violet-blue in front ; dorsum 

 of head and thorax with a violet tinge, the abdomen more bluish; 

 all bristles black. Palpi with their apices narrowly black. Wings 

 yellowish hyaline. Halteres yellow. 



Frons smooth, subquadrate, with a pair of fine convergent hairs 

 close to middle of disk; basal segment of antennae a little longer than 

 second, bare below, third slightly tapered apically, about 1.5 as long 

 as first and second combined ; basal wide portion of arista not as 

 wide as third antennal segment and a little longer than it and also 

 than apical hair-like portion; cheek higher than width of third an- 

 tennal segment ; palpi not dilated. Thorax smooth on dorsum, with 

 fine black hairs on mesonotum ; seutellum smooth, without hairs, but 

 with dense microscopic pile which is present also on thorax. Fore 

 femur with two or three posteroventral bristles. 



Length, 3.5 mm. 



Tyjye and three imratyyes^ Mount Maquiling, Luzon, P. I. (C. F. 

 Baker). 



Named in honor of the collector. 



ry/?^.— Male, Cat. No. 41073, U.S.N.M. 



This genus supplies a connecting link between the Celyphinae and 

 Sapromyzinae, the small size of the seutellum, and the presence of 

 scutellar bristles, showing an approach to some genera in the latter 

 subfamily. No other species in Celyphinae has scutellar bristles. 



Genus PARCELYPHUS Bigot 



I have before me two species of this genus, one of which appears 

 to be undescribed. They may be distinguished as below. 



