Canadian Spiders, II. 149 



middle eyes are small, near together and half-way between the 

 mandibles and the top of the head. The upper middle eyes are 

 farther apart than they are from the lateral eyes and between and 

 below them is a cluster of hairs directed upward. On the front 

 of the under side of the abdomen, between the lungs, the surface is 

 marked with fine lines arranged in hexagons like a honeycomb. 

 The male palpi have the tibia extending on the upper side over 

 the tarsus with a short tooth turning downward and outward at 

 the end. Tigs. 3, 3a, 3b. PI. II. 



Lake Louise, Laggan, sifted from moss. 



Tmeticus obtusus. new sp. 



This is a little translucent spider, 1.5 mm. long, related to 

 T. entomologicus, Em., Trans. Conn. Acad., 1911, T. acummatus, 

 Em., Bull. Am. Museum, ^. Y., 1913, and T. digitatus, Em., 

 from Ithaca, 1^. Y., Journal JST. Y. Ent. Soc, 1914. The plainest 

 difference, as in all these species, is in the shape of the tibia of 

 the male palpus. In this species the tibia is widened at the end, 

 and has a shallow notch on the under side. On the upper side it 

 extends over the tarsus in a flat process as wide as the patella, 

 square at the end, and with a slight tooth in the middle of the 

 outer side. Fig. 4. PI. II. The palpal organ is very simple as 

 in the other species. The eyes have the two middle pairs far 

 apart, the upper pair about their diameter from each other, and 

 the lower pair nearly touching each other. 



Jasper, Alberta, in moss near the pond. Lake Louise, 1905. 



Lophocarenum dentipalpis. new sp. 



3 mm. long. Pale with head and ends of palpi a little dark- 

 ened with gray. The head is elevated behind the eyes and has 

 two humps rounded in front and extending forward at the sides 

 of the upper middle eyes and a little beyond them. Between the 

 humps are scattered long black hairs directed forward and between 

 the upper and lower middle eyes are two rows of hairs directed 

 outward. The head is narrow and rounded in front, and extends 

 forward beyond the mandibles. The male palpi are large and com- 

 plicated. The patella is longer than wide, and curved downward. 

 The tibia is narrow at the base, from which it spreads in all 

 directions over the tarsus. On the upper side of the tibia is a 

 small black tooth attached on the inside and extending beyond the 



