5l8 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



8. Females: abdomen ovate, subcompressed, fourth and fifth 



segments subequal and a little longer than the others 



Bruchopbagus p. 520 

 Males: funicle 4-jointed, joints briefly pedunculate at apex, 

 with sparse, irregularly arranged hairs; body of abdomen 

 oval, fourth segment largest Bruchopbagus p. 520 



9. Head not cornuted, eyes oval or ovate; marginal vein longer 



than stigmal, or rarely shorter, never stigmated; abdomen 

 in female conic-ovate or conically pointed; antennae dis- 

 similar in the sexes, in female generally subclavate, in 

 male with joints of funicle excised or constricted at 



apex and with whorls of long hairs 10 



Head cornuted, much wider than thorax, eyes round; mar- 

 ginal vein four or more times longer than stigmal vein; 

 antennae ii-jointed , Axima p. 524 



10. Females; winged, marginal vein always longer than stigmal; 



metathorax sloping or rounded behind, not abruptly and 

 squarely truncate behind, thorax more or less distinctly 

 umbilicately punctate, punctate, or shagreened, opaque, 

 never smooth and shining; antennae usually ii-jointed, 



with one ring-joint, funicle 5-jointed li 



Males: marginal vein always longer than stigmal; metatho- 

 rax not abruptly and squarely truncate behind, either 

 sloping or rounded, thorax more or less distinctly umbili- 

 cately punctate or coarsely shagreened, opaque; head 

 sculptured like thorax 12 



11. Mesonotum umbilicately punctate, punctate or rugulose; ab- 



domen conically pointed, segments Subequal in length, 

 fourth not or only slightly longer than third. .Isosoma p. 522 

 Mesonotum with middle lobe nearly smooth, delicately punc- 

 tate, usually with delicate transverse scratches anteriorly; 

 abdomen conically pointed Evoxysoma p. 523 



12. Mesonotum more or less distinctly umbilicately punctate, not 



finely transversely scratched anteriorly; joints of funicle 

 more than twice longer than thick, constricted or briefly 



pedicellate at apex, and with indistinct whorls of hair 



Isosoma p. 522 

 Mesonotum not punctate as in Isosoma, middle lobe smoother, 

 delicately punctate, usually with delicate transverse 

 scratches anteriorly Evoxysoma p. 523 



Decatoma Spinola. 

 *^D. varians Walsh. 

 Female: length 2.5-4 mm. Male: length 2-3.5 ^^' ^^^^ 

 ocher-yellow to honey-yellov^r to rufous ; vertex with a black spot 

 in the immediate vicinity of the ocelli and variable in extent; 



