1875.1 208 



PoLiETES. — This genus was separated by E. Desvoidy from the 

 Antliomi/iidcB and placed among the Muscides, from the resemblance 

 which the two species contained in it bear to some of the more highly 

 developed flies ; but it possesses the essential character of the family 

 in a very high degree, the fourth and fifth longitudinal veins diverging 

 considerably from each other at their extremities, thus leaving the first 

 posterior cells of the wings widely open. Of the two species which it 

 contains, one is the well known Musca lardaria, Fab., in size and foi-m 

 much like the common blue-bottle fly, but lighter and greyer in colour ; 

 and the other the Musca albo-lineata, Fall., the Macrosoma fioralis of 

 Desvoidy, which closely resembles Cyrtoncura hortorum in colour and 

 markings. 



IItetodesia. — This includes all the species (except the two in the 

 previous genus) which have plumose antennse and liairy eyes. It cor- 

 responds to the first half of the genus Aricia of Macquart and others. 

 The typical species are mostly of considerable size, have an oval abdo- 

 men, and form a very natural group ; but a good many aberrant species 

 of small size and oblong form are obliged to be associated with them. 



(To he contimiedj . ^j ,, , ^ '^ ^ ^\ 



DESCRIPTION OF A NEW SPECIES of BRASSOLIN^ from EOaOTA. 

 BY W. L. DISTAXT. 



Opsiphanes BoaoTANUS, n. sp. 



Wings above, cliocolate-brown, front wings with first half of costal area of a 

 more rufous-brown, from which, near the base, a semi-circular patch of the same 

 colour extends over about one-third of discoidal cell to base of internal area, a some- 

 what irregular band of yellowish-white extending from costal margin immediately 

 past extremity of cell to external angle, widening below cell and tei-minating in a 

 smallish sub-marginal patch; three sub-apical white spots. Hind-wings with 

 abdominal half of a more rufous-brown, which occupies lower half of cell and 

 extends through second median interspace to abdominal area which is yeUowish- 

 white, two sub-marginal, somewhat obscure, narrow waved bands of darker brown. 



Wings below very similar to O. Cm»ie/-j, Felder, and to 0. Orffetorix,'He-mtson. 



Expanse of wings, 4 in. 2 lin. Hab. : Bogota. 



A female, apparently of this species, is in the National Collection 

 from Yenezuela, and in colour and markings somewhat closely re- 

 sembles 0. Crameri, Felder. 



Streatham Cottage, Buccleuch Road, 

 West Dulwich, S.E. : 



January 2nd, 1875. 



