58 COXNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Polytaxonus MacGillivray. 

 °P. robustus (Provancher). Taxonus rohustus Provancher. 

 Black, with the following parts white: labrum, mandibles, 

 collar, tegulae, apices of coxae, costa, and apical two-thirds of 

 stigma ; with the following parts rufous : legs, except coxae, tarsi, 

 and apex of posterior tibiae, and a band covering abdominal 

 segments two to five; median fovea large, distinct, extending 

 nearly to median ocellus, ocellar basin not depressed; third seg- 

 ment of antennae very slightly longer than fourth. Length 8 mm. 



Eriocampa Hartig, 

 *E. rotunda (Norton). Sciapteryx rotundus Norton. 

 Black, with legs, except coxae and apices of middle and pos- 

 terior femora and posterior tibiae and tarsi, yellowish; head and 

 thorax strongly punctate; frontal area prominent; third segment 

 of antennae almost as long as fourth and fifth together; wings 

 hyaline with an indistinct fascia beneath stigma. 

 Farmington (E. N.). 



Pseudosiobla Ashmead. 

 °P. excavata (Norton). Siobia excavata Norton. 

 Tegulae black; body black, with the following parts yellow: 

 first, second, and base of third segment of antennae, collar, a 

 quadrangular spot on pronotum below tegulae, cenchri, basal plates, 

 trochanters, front femora except a dusky spot at base, their 

 tibiae and tarsi, middle legs beyond the middle of femora, a ring 

 at the base of the posterior femora, basal two-thirds of tibiae, and 

 the greater part of the metatarsus ; first abdominal segment yel- 

 lowish; wings slightly infuscated. Length lo mm. Larva feeds 

 on button-bush. 



°P. robusta (Kirby). Siobia robusta Kirby. 

 Tegulae rufous ; body black, with the following parts rufous 

 or yellowish rufous : the first, second, and base of third segment 

 of antennae, metathorax, basal plates, first abdominal segment, legs 

 in part, except where marked with black as in preceding species, 

 and costa and stigma; labrum, collar, area on pronotum below 

 tegulae, and tibiae yellow; wings strongly infuscated. Length 

 13 mm. 



