140 



FAMILY EVANIIDiE. 



Hab. — Distributed throughout the world, and almost everywhere 

 the most abundant species. It is believed to have originally inhab- 

 ited Europe from whence it has become naturalized in almost all 

 countries along with the Blattidse on which it is parasitic. In the 

 United States it seems chiefly confined to the east, and is especially 

 common in some of the larger cities. Say's tmicolor was from the 

 Rocky Mountains, but we have no other records from that far 

 west. It has never been taken here at Ithaca, nor have I seen 

 specimens from north or west of here. 



Evania urbaiia n. sp. 



(Figs. 45, 66, 77.) 

 '^ , 9 . — Black. Sericeous pubescent, especially the face and propcideuni, shin- 

 ing silvery in certain lights. Face subconvex below the antennse, which are 

 situated rather far apart in a deep and very well defined basin, the anterior and 

 lateral margins of which are limited by a distinct ridge which starts from a cen- 

 tral point on the face below the antennae, running on each side outward and 

 upward, to a short distance from the eyes, where it turns inward again, becom- 

 ing lost before reaching the ocelli; another carina extends longitudinally be- 

 tween the antennae traversing the whole length of the basin ; as thus defined, 

 the basin is narrower than in E. app endig aster ; from somewhat within the lower 

 angles of the eyes a groove extends on each side to the inner angles of the man- 

 dibles, which, together with the carinse above described, enclose a shield-shaped 

 area embracing the entire face, which is subcoarsely and regularly longitudinally 

 striate, the strise converging somewhat towards the apex (clypeus), which appeals 

 as a very small triangular smooth and polished piece; the temples are roughly 

 substriate, below the eyes the cheeks are striate similarly to the face, the stria- 

 converging towards the face and mandibles; the vertex is covered with large 

 punctures; the ocelli placed close together, the central ones much smaller than 

 the other two, between the central and each lateral ocellus is a small smooth 

 prominence partly surrounding each ocellus, part of which it at first appears to 

 be; eyes small, prominent, removed by a little less than their length from the 

 mandibles; temples narrow, wider at the base of the eyes; antennas filiform, 

 somewhat thickened in the female ; average measurements as below : 



Thorax above like the vertex, roughly and rather irregularly covered with 

 coarse punctures; the sides, venter, propodeum and posterior coxse punctate to 

 shallowly reticulate; anterior grooves not evident, lateral and parapsidal grooves 

 very short and barely discernable ; metanotum not very deeply sunk, compara- 

 tively broad, forming a transverse lather squarely cut trough; furcula with 

 divergcTit tynes (Fig. 66). 



