1T2 Journal New York Entomological Society. [Voi. v. 



each side of the three thoracic lines not curved outward at posterior end. Eyes vel- 

 vet black, face and front silvery ; the front with usually a trace of a linear black vitta 

 in one specimen very distinct, in another entirely wanting. Antennae yellowish, with 

 a silvery covering Thorax silvery, with three longitudinal lines ; the middle one 

 longest, very narrow and linear; the outer ones heavier, straight, slightly divergent 

 posteriorly. Looked at from directly above, the outer lines appear curved, outwardly 

 convex. Scutellum and metascutum below scutellum, both brownish in some lights 

 but in others they seem to be wholly silvery, the various portions appearing different 

 in color to the view at the same time. Abdomen silvery, but the third and fourth 

 segments wholly brownish, sometimes with a round median silvery spot on each. 

 Legs yellowish, shaded with silvery, tarsi blackish or brownish ; hind metatarsi yel- 

 jowish, except at distal end. Wings clear, whitish, veins dilute pale yellowish. Ilal- 

 teres and wing bases pale dilute yellowish. 



Four 9 's, Reynosa, Tamaulipas. A small species taken on car win- 

 dows of railway train, May loth. 



Described from four dried specimens. 



SYRPHID^. 

 Baccha clavata Fab. 



One $ bred from pupa found in square of cotton at Carmen, about 

 four miles up the river from Brownsville, May 24th. The pupa was 

 fastened by its anal end to the inside of the square. It may be described 

 as follows: 



Pupa. — Length, 57^ mm. Pale greenish yellowish. Oval with a 

 flat ventral surface, full and rounded on anterior end, more tapering 

 and pointed on posterior end. A few short hair-like filaments of in, 

 tegument on dorsal surface in five transverse rows, the first row being 

 on anterior end above cephalic plate. 



The adult was found issued May 31st. Facial stripe greenish 

 black. Thorax dark metallic greenish. Scutellum greenish across the 

 disk. Posterior border to the insertion of the antennae dark greenish. 

 Otherwise the coloring was normal. 



Baccha tropicalis, sp. nov. 



^. Length, nearly or quite 12 mm. Eyes of a beautiful soft yellowish-olive 

 color, frontal triangle rust-yellow except sides which are pale greenish-yellow, with 

 a round or slightly oval black spot anteriorly near basis of antennae, and a pointed 

 spot before posterior angle. Front with thin black hair. Antenna; rust-yellow, the 

 third joint with a brownish tinge, arista same color as third joint. Face pale green- 

 ish yellow. Ocellar area soft deep black, a brassy-yellowish space behind it between 

 eyes. Occiput gray-cinereous. Thorax on the sides, and scutellum, the same color as 

 the whole plurae, bright clear yellow with hardly a greenish tinge, the scutellum and 

 posterior sides of thorax with slightly more of a greenish or olivaceous tinge. Pectus 



