190 ./. //. Emerton, 



a half times as large as the other. The head is a little elevated, 

 highest just behind the upper middle eyes. The epigynum is very 

 simple, showing a straight edge behind, with a wide middle lobe 

 separated only by slight grooves. The sternum in both sexes extends 

 backward between the fourth coxae, where it is wider than the dia- 

 meter of the coxae. 



Lophocarenuin alpinum, Banks. 



Dismodicus alpinua, Banks. Can. lint., 1896. (Plate III, figures 3 

 to 3f.) 



An adult male and female were found in a thin web under a 

 stone near the summit of Mt. Washington, N. H., and another female 

 and a male not yet molted for the last time under other stones in 

 the same neighborhood. The male is 2 mm. long. The cephalo- 

 thorax is half longer than wide, narrow in front and extended a 

 little beyond the mandibles. The hump is rounded above and rises 

 between the eyes and the middle of the cephalothorax ; it is nearly 

 as wide as the front of the head, and inclines forward a little over 

 the eyes. The front of the hump is covered with short hairs, longest 

 below and turned outward toward each side. On each side of the 

 hump at the level of the eyes is a groove with a round pit at the 

 front end. The eyes are spread over the whole width of the head, 

 the lateral pairs largest, the front middle pair very small and near 

 together. The eyes of the upper row are equal distances apart. 

 The palpi are longer than the cephalothorax. The tibia is shorter 

 than the patella, and extended only a little over the upper side of 

 the tarsus, where it is divided into two teeth, the inner one longest 

 but slender and hooked inward at the end. The palpal organ 

 resembles that of the last species and of L. montiferum. 



A young male almost ready for the final moult, shows a small 

 hump behind the eyes and a slight extension of the front of the 

 head. The palpi are much enlarged, and show the form of the 

 male tibia and palpal organ indistinctly through the skin. 



In the female which is about the same size as the male, the front 

 of the head is not extended forward, but there is a slight hump 

 one-fourth as high as that of the male, in the same place between 

 the eyes and the middle of the cephalothorax. The epigynum has 

 a wide middle lobe curved on the edge and shows through the 

 skin the spermatheca; and two irregularly coiled tubes at the sides 

 (if the middle lobe. 



