282 Professor Williston on the 



dark brown, the anteunte not as long as the thorax. Thorax black ; 

 mesonotum opaque yellowish pollinose, with three slender 

 indistinct lines ; in the middle behind, whitish ; pleurae lightly- 

 whitish pruinose. Abdomen opaque black, the anterior segments 

 somewhat luteous ; the posterior margin of the segments very 

 narrowly whitish, perhaps due to the drying. Legs luteous. 

 Wings rather broaJ, tinged with brownish, leaving six or seven 

 rounded, hyaline or whitish spots in the cells ; tip of the costal 

 cell blackish. Length 1-1 5 mm. 



Four specimens, one of which bears the following' 

 label, apparently in Mr. H. H, Smithes handwriting : 

 ''This is the common 'sand-flj' about the southern end 

 of the island, but is not very troublesome. Bites late 

 in the afternoon, before sunset; sometimes during the 

 heat of the day.'' 



13. Ceratopogon lotus, n. sp. (PI. IX., fig. 47, wing.) 



(J. Two subcostal cells ; the third vein unites with the costa a 

 little beyond the middle of the wing ; wings hairy ; metatarsi as 

 long as the three following joints together. Antennae brown, yel- 

 lowish towards the proximal end. Proboscis yellowish. Mesonotum 

 brownish yellow, with yellowish hair. Abdomen black or brownish 

 black. Legs yellow, a little inf uscated towards the tip of the tarsi ; 

 with light coloured hair ; pulvilli wanting. Wings hj'aline beneath 

 the light coloured pubescence ; posterior branch of the fourth vein 

 indistinct in its prosimal part. Length 1-1 ^i mm. 



Two specimens. 1000 feet. 



14. Ceratojoojon sequax, n. sp. (PI. IX., fig. 48, wing.) 



^ . Two subcostal cells ; the third vein terminates distinctly 

 beyond the middle of the wing ; wings bare ; prefurca of anterior 

 fork short ; metatarsi as long as the two following joints together. 

 AntenniB dark-brown ; yellowish on the proximal portion, the 

 plumosity yellowish. Palpi and proboscis yellowish-brown. 

 Thorax brown, the scutellum and sides of dorsum more yellowish ; 

 only a little shining. Abdomen slender, dark brown. Legs 

 luteous or yellow, with long hairs on the tibiae. Wings hyaline. 

 Length I2 mm. 



