332 Capt. P. P. King’s South American Diptera. 
conspicuz : abdomen fuscum ; segmenta basi sordidé flava: pedes pallidé 
fusci, pubescentes; core et femora flava: ale hyaline, iridescentes, cili- 
ates, costam versus flavescentes; nervi pallidé fusci, pilosi, ad costam 
obscuriores: halteres flavi, apice fusci. 
Taken at Monte Video in Brazil, where it abounds, and is called the Mos- 
quitto by the inhabitants. 
*2. CHIRONOMUS ANTARCTICUS, N. $. 
Mas et fem. Canus, thorace maculato, abdomine nigro, pedibus obscurè flavis, 
alis albo-hyalinis. 
Corp. long. 24—24 lin. Alar. 33—4 lin. 
Caput canum: oculi nigri: antenne nigro-fusce: os fuscum: thorax canus, 
maculis 3 nigris, media anteposità; pectus nigrum, nitidum: abdomen 
nigrum, pubescens ; segmenta apice fusca, mari feré nigra: mari pedes 
pallidé flavi, pilosi; fem. obscureé flavi, pubescentes; farsi fusci: ale 
albo-hyalinze, iridescentes ; punctum solitum fuscum ; nervi costales fusci, 
bené determinati; czeteri vix conspicui: halteres obscure flavi. 
Taken at Port Famine in the Straits of Magellan. 
3. CHIRONOMUS LATERALIS, 7. S. 
Mas. Ater, thoracis lateribus anticé rufis, pedibus nigro-fuscis, alis subfuscis. 
Corp. long. 1—1£ lin. Alar. 12—2 lin. : 
Ater, nitidus: antenne nigrae: os fuscum: thorax utrinque antice rufus: ab- 
domen nigrum, obscurum, pubescens: pedes nigro-fusci, pubescentes: ale 
subfuscze, iridescentes ; nervi fusci, optime determinati: halteres albi. 
Taken at Port Famine in the Straits of Magellan. 
*4. GONOMYIA? ANTARCTICA, N.S. ` 
Mas et fem. Fusca, obscura, thorace utrinque maculato, pedibus basi flavis, 
alis subhyalinis. 
Corp. long. 23—3 lin. Alar. 61 lin. 
Gonomyid non benè convenit; alarum nervi nonnulli dissimiles: caput fus- 
cum: antenne nigro-fuscæ, pilose : thorax griseus, fusco trivittatus ; vitta 
media lata; vittæ laterales angustiores, breviores: abdomen sordidè fusco- 
