Biptera of St. Vincent {West Indies). 273 



CHIRONOMID^. 



Chironomus. 

 Meigen, Illiger's Mag., ii., 260, 1803. 



Table of Species. 



1. Front metatarsi not more than one-and-a-half times the 



length of the front tibiae 3 



Front metatarsi two or more times the length of the tibiae . 2 



2. Wings spotted spilopterus^ n. sp. 



Wings not spotted anunijmus, n. sp. 



3. Dorsum of thorax yellow, with brown stripes forming 



ay hmglmanus, n, sp. 



Dorsum not so marked 4 



4. Dorsum of thorax with dark brown spots. . innocuus^ n. sp. 

 Dorsum yellow, or brownish yellow, not spotted .... 5 



6. Wholly light yellow^ sp. 6 



Abdomen brown or black luguhris, n. sp. 



1. Chironomus spilopterus, n. sp. (PI. IX., fig. 32, wing.) 



(^, 9 • Face and front yellow^ish brown. Basal joint of antennae 

 brownish-yellow ; flagellum brownish, the plumosity of the male 

 blackish grey. Mesonotum brown or yellowish-brown, lightly 

 whitish dusted ; in well-preserved specimens brown vittate on the 

 sides, and in front in the middle. Pleurae black, in part luteous. 

 Scutellum yellow or yellowish-brown. Abdomen black, with 

 yellowish hair ; in the male, slender ; in the female, broader, and 

 with a whitish posterior margin to the segments. Legs yellow, 

 with rather abundant yellow hair ; femora in part brown or 

 brownish ; front tibiae not more than one-half of the length of the 

 front metatarsi. Wings whitish hyaline, with pale blackish spots, 

 which are more distinct when seen obliquely, and situated as 

 follows : One near the base, another near the middle, and a third 

 near or at the tip of the first posterior cell ; a streak near the 

 middle, and a spot near the tip of the cell in front of the forked 

 cell ; a spot on the posterior branch of the furcation, and one or 

 two in the anal angle. Length lf-2j mm. 



Eight specimens. 



