282 Professor Williston on the 



dark brown, the antennae 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 broad, tinged with brownish, leaving six or seven 

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

 cell blackish. Length 1-1 § mm. 



Four specimens, one of whicli bears tbe following" 

 label, apparently in Mr. H. H. Smith's handwriting ; 

 '^This is the common 'sand-fly' about the southern end 

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

 in tbe afternoon, before sunset; sometimes during the 

 heat of tbe day." 



13. Ceratopogon lotus j 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 hyaline beneath 

 the light coloured pubescence ; posterior branch of the fourth vein 

 indistinct in its proaimal part. Length 1-1 j mm. >»<--* 



Two specimens. 1000 feet. ^ t^oaX ^-^T^^f^^^ 



14. Ceratojpogon sequax, n. sp. (PL 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. 

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

 plumosity yellowish. Palpi and proboscis jellowish-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 tibise. Wings hyaline. 

 Length li mm. 



