196 THE CA.NA.DIA.S' ENTOMOLOGIST. 



oval spots on abdominal segments two to four, yellow, the spots on the 

 second segment located between the centre and the lateral margin, those 

 on the other two segments situated slightly in front of the middle ; 

 abdomen widest at base, subopaque, becoming somewhat polished 

 posteriorly ; front legs yellowish brown, ends of tibue and first two joints 

 of the tarsi yellow, middle and hind legs black, base of middle tibiae, first 

 two j lints of their tarsi and first three joints of the hind ones, yellow; 

 wings hyaline, tinged with brown along the costa, the base and stigma 

 dark brown, the costal cell dark gray; length, 12 mm. Four males 

 collected February 24th and March grd to 9th. 



Habitat. — Frontera, Tabasco, Mexico. 



Type.— Cat. No. 6291, U. S. N. M. 



Lycastrirhync/ia Wiilistoni, new species. 



Head black, with a slight bluish tinge, front thinly gray pruinose, 

 crossed at middle by a velvet black fascia prolonged backward in the 

 middle and at each end, a transverse row of four velvet black spots on 

 vertex; face on upper part and the sides yellowish-gray pruinose, 

 prolonged on sides of snout almost to its middle; antennae reddish yellow; 

 eyes sparsely long haired on the upper part ; body black, slightly tinged 

 with bronze, thinly gray pruinose; me.sonotum marked with three velvet 

 back vittae, the median one complex, the lateral ones interrupted at the 

 suture, behind which they are double : scutellum velvet black on basal 

 half, second and third segments of abdomen with a pair of large yellow 

 spots narrowly separated from the lateral margin, remainder of these 

 segments, except their narrow yellow hind margins, velvet black, narrow 

 hind margin of fourth segment also yellow, this segment with three velvet 

 black spots in the form of a triangle, two along the hind border and the 

 other in the middle in front ; legs black, the front and middle knees 

 yellow, hind knees and first two j )ints of middle tarsi sometimes also 

 yellow; wings hyaline; length, 7 to S mm. Three uules collected 

 February 12th to 14th. 



Habitat. — Frontera, Tabasco, Mexico. 



Type.— Cat. No. 6292, U. S. N. M. 



Sphiximorpha ancora/is, new species. 



Head black, upper edge of occiput, lower part of front, except a 

 median line dilated at base of antennie and prolonged laterally on the 

 face, and the face, except a median vitta, yellow ; antennal process 

 slender, dark brown; antennae brown, the joints subequal in length, the 



