29H J. H. Etnerton — New England Epeiridce. 



Tetragnathinae. 

 These differ considerably from the other Ej)eirida\ The maxillae 

 and laV)inm are shaped at the end as in the EpeiriiKe l)ut are much 

 longer. The mandibles, especially in the males, are very long and 

 toothed on the inner edge. The eyes are on the front of the head in 

 two rows, the lateral pairs not so distinctly separated from the others 

 as in Epeirinse. The epigynum is internal, consisting oidy of a pouch 

 with simple spermathecae. PI, xl, fig. 7, The palpal organs are not 

 enclosed by the tarsus and the tarsus has a long movable hook 

 jointed to its base. Pi, xl, figs, 5 and 6, The colors are light, usually 

 yellowish with gray markings and silvery spots and bands. Genera 

 Tetragnatha, PacJiygnatha. 



Epeira, 

 In Epeira the front of the bead is low and the lateral eyes are 

 much farther from the middle ones than these are from each other. 

 The abdomen is usually round, or short oval, sometimes widened 

 and thickened a little at the front end with two humps or horns on 

 the back. The epigynum is covered by a hook or finger which is 

 sometimes narrow and soft and placed between two elevations, and 

 sometimes Avide enough to cover all the other parts as in E. doniicilL 

 oriwi and trivittata. The males are always somewhat smaller than 

 the females and have longer legs, the second pair of which are often 

 thickened or curved. The palpal organs are large and have a short 

 tube with a large terminal hook and large hard processes at the base. 

 The tarsus lias a short curved spur at the base. The tibia and patella 

 of the male palpi are usually short. 



Epeira nordmanni, cinerea, silvatica, angulata, solitaria and corticaria. 



All these spiders have two slight humps on the front of the abdomen, which is a 

 little wider and thicker in front than in other species. The colors are generally dark. 

 Most of the spiders grow to a large size and are generally found in woods of large 

 trees. Silvatica, angulata and solitaria resemble each other closely and may be mis- 

 taken one for the other. Jn angulata the sternum has a yellow middle stripe and the 

 abdomen yellow spots V)etween the spinnerets and epigynum. In silvatica the sternum 

 is brown and the abdomen brown beneath with only indistinct markings. The male 

 angulata has a large spine on the coxa) of the second legs, while in silvatica this spine 

 is very smalk The enlarged tibia of the second legs in the male angulata is nearly as 

 long as tibia of the first legs. In silvatica the second tibia is more slender and much 

 shorter than the tibia of the first pair. The folium of silvatica has a row of oblique 

 black markings along the edge on each side, while in angulata it is evenly notched. 

 The male solitaria is much larger tlum tlie other species, it has the spines on the 

 second coxfc very large and smaller ones on the first coxic. The under side of the 

 abdomen and sternum are black and the folium indistinct. E. corticaria may be mis- 



