Na. 461.) NORTH AMERICAN INVERTEBRATES. 311 
8. Posterior eyes closer together; S. E. on gain tubercles ; legs long and 
very slender . Microneta. 
Posterior eyes fanis apart; S. E. not on hedo legs less slender 
Tmeticus. 
9. P. M. E. plainly closer to P. S. E. than to each other, and larger than 
S. E.; femora with few if any spines . . Neriene. 
P. M. E. not closer to P. S. E. than to ide other 
Io. No spines on metatarsi; P. M. E. rather close ne 
TEMA 
Spines on metatarsi, at least one a1. 
11. P. M. E. very much larger than S. E. two or Ei times linee about 
one diameter apart, and as far from very small S. E., which are no larger 
than A. M. E. ; abdomen slender . ; \ i .  Linyphiella. 
P. M. E. not much larger than other eyes . |j Ir 
12. P. M. E. at least two diameters apart,or else gis daxthes ira S. E. 
than from each other; — of M. E. plainly wider above than 
below . . Linyphia. 
P. M. E. scarcely more dua diaiuster e and about as close to P. 
S. E. : ER E ts. 
13. All REN with some distinct spines. : : i . hog P 
All femora not with distinct spines . : ; ; i WE T 
14. Tarsus I two thirds of metatarsus I; quadrangle of M.E. rather nar- 
rower below . . Bolyphantes. 
Tarsus I only one ali: of metatarsus © quadrangle of M. E. as wide 
below as above Labulla. 
15. Abdomen high uid bres at Jun. Berne to a init behind 
epthyphantes. 
Abdomen elliptical or even broader beyond middle, not tapering behind 
Frontinella. 
16. Tarsus I io! about one half as long as metatarsus I, male with lobate 
. Hypselistes. 
Tarsus I two j thirds or more iol length " he metatarsus I . 17. 
17.2 Dorsum of male abdomen with a corneous shield ; often present also 
in female i = 18. 
Dorsum of abdome in Lon sexes en shie ld 20. 
18. Sternum broadly truncate and slightly concave behind between hind 
coxz; usually some corneous pen on venter ; tarsi I but little shorter 
than metatarsi I ; Ceratinella. 
Sternum less broad and FERN convex behind Daaa hind coxe ; 
no corneous pieces on venter . 19. 
apa Tarsi I plainly shorter than metatarsi ; no bole à in ide of eli head ; 
P. M. E. but little higher than A. M. E. : . Exechophysis. 
! Linyphiella, new genus for Linyphia coccinea Hent ; 
* Beyond this the table is based on males, although da will frequently run 
to proper place. 
