8 PROCEEDINGS OF THE NATIONAL, MUSEUM vol.70 



CLARAPLUMULA, new genus 



Genotype. — Clarapluiyiula latifacies^ new species. 



Of the tribe Syrphini. Head large, inflated, broader than the 

 thorax; face yellow, very broad, nearly quadrate; antennae very 

 widely separated, the distance between them nearly equal to length 

 of antenna; below, on each side of face, is a deep slit; metasternum 

 long pilose ; wing entirely villose ; plumula large ; tergites two, three, 

 four, and five each with a pair of large yellow spots. 



The pilose metasternum separate this genus from all other 

 Syrphinae except Asarcina (Oriental) and Fazm (see below). It 

 is further separated from Syrphus by the large inflated head and 

 widely separated antennae; from Scaeva by the villosity of the 

 wings, and from Fazia by the broader face, less protruding oral 

 margin, and much broader oral opening. In GlarapluTnula the oral 

 opening is about twice as long as broad; likewise the torma is 

 twice as long as broad; in Fazia the oral opening is very long and 

 narrow, being more than four times as long as broad, and the torma 

 is about four times as long as broad. 



CLARAPLUMULA LATIFACIES, new species 



Readily recognized by the large head, the four pairs of large yel- 

 low spots on the abdomen, and the smoky wings. 



Male. — Ocellar triangle rather small, black pilose ; frontal triangle 

 very broad, black pilose; basal antennal joints yellowish brown, the 

 third darkened; arista arising near base of third joint, black, 

 slightly longer than antenna; face yellowish, with sparse, black 

 hairs; very broad, in profile nearly straight from antennal base to 

 the protuberance, thence rather sharply retreating to the anterior 

 oral margin which is slightly produced; jowls very broad, more or 

 less aeneous and pale pilose; mesonotum aeneous, with a pair of faint 

 stripes, sides yellowish, scutellum yellowish; femora and tibia red- 

 dish brown, tarsi darker; abdomen black with four pairs of large 

 3'^ellow spots, anterior corners also yellow ; wings smoky. Length 13 

 mm.; wing 11.5 mm. 



Two males. 



Type locality. — Tincochaca, 7,000 feet, Peru, Yale Peruvian Expe- 

 dition (August 9, 1911). Also Paltaybamba, 5,000 feet, Peru. 



Type.— Csit. No. 28768, U.S.N.M. 



CALOSTIGMA, new genus 



Genotype. — Calostigma elnora^ new species. 



Two female specimens representing a new genus and species are at 

 hand from Bolivia, which possess two unique characteristics for the 

 subfamily, Syrphinae, in which they belong. 



