l68 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



XIPHYDRIID^.* 

 Key to Genera. 



Radial and radio-medial cross-veins present . . . . Xiphydria p. i68 

 Radial cross-vein present, radio-medial wanting ..Konowia p. 169 



Xiphydria Latreille. 



Key to Species. 



1. Abdomen in great part black 2 



Abdomen in great part red or yellow 4 



2. Antennae black; posterior tarsal claws with a moderate-sized 



tooth 3 



Antennae white at apex; posterior tarsal claws with a minute 

 tooth; body black, with two small spots above antennae, 

 orbits extending in a line behind eyes, base of mandibles, 

 two lines on vertex, four lines on notum, a spot before 

 the wings, and seven spots on each side of the abdomen, 

 white; legs honey-yellow; wings hyaline. Length 10 mm. 



maculata 



3. Legs rufous or yellow; third antennal segment about twice 



as long as second; body in female black, with a spot on 

 clypeus, sometimes wanting, line beneath eyes, sometimes 

 interrupted, two spots behind ocelli, posterior orbits, 

 collar, and spot on each side of each abdominal segment, 

 white; tegulae and legs, honey-yellow. Male has white 

 spots on first four abdominal segments. Length 13 mm, 



canadensis 

 Legs black, with bases of tibiae and tarsi white; third anten- 

 nal segment subequal in length to second; abdomen with 



white spots on four basal segments. Length 11 mm 



tibialis 



4. Head, thorax, and legs in great part, black; body in female 



black, with two pale spots behind ocelli, and bases of 

 tibiae and tarsi, white; abdomen red. Male uniformly dark 

 brown, with a yellow spot on pleurae and inner orbits, or 

 sometimes entirely reddish yellow. Length 12 mm. attenuata 

 Head, thorax, abdomen, and legs, honey-yellow; tips of man- 

 dibles, spot on vertex, a line above bases of antennae, lines 

 on neck, sutures of pleurae, sides of basal plates, and dor- 

 sum of following abdominal segments except at middle, 

 brownish. Length 10 mm erythrogastra 



* In the preparation of the tables dealinsr with this and the following families free use 

 has been made of the manuscript of a paper by Dr. J. Chester Bradley, "A revision of the 

 coll Rj grroup." The portion of this paper dealing with the Siricidae has been published 

 since this manuscript was submitted, under the title, Siricidse of North America, in Journal 

 of Entomol. and Zool., 1913, vol. 5, pp. 1-35. 



