186 ./. //. Emerton, 



The epigynum is simple, with a middle lobe a little longer than 

 wide. 



The male palpi have the patella long and widened at the end, 

 with a large tooth on the under sider. The tibia is very short and 

 has a tooth on the upper side as long as that on the patella but 

 more slender. The palpal organ has a slender pointed process at 

 the end, and a short and flat basal hook, PI. II, tig. 6. 



Three-mile Island and Jaffrey, N. H., Mt. Tom, Mass., Simsbury, 

 Conn., Balsam, North Carolina. 



Caseola, new genus. 



General appearance like Ceratinella, but without any hard plate 

 on the abdomen. The cephalothorax is as wide as long, in the male 

 alliceps, elevated in front. The two rows of eyes are of equal 

 length the upper middle pair as far from the front middle pair as 

 they are from each other. The abdomen is oval, not much larger 

 than the cephalothorax and covered with scattered hairs. The 

 legs are short and differ little in length. The mandibles have 

 three very small teeth on the inner side of the claw groove and 

 two or three larger ones on the front. The maxillae are longer 

 than wide and a little pointed at the inner corners. The sternum 

 is as wide as long, widest between the first and second legs and 

 extends backward between the fourth legs, where it is as wide as 

 the coxae. The male palpi have the patella and tibia both short 

 and the palpal organ simple with a slender curved tube, at the base 

 of which is a flat process widened and oval at the end directed 

 outward. 



Caseola herbicola, new. (Plate II, figures 1 to Id.) 



1.5 mm. long and resembling Ceratinella, but without any hard 

 spots on the abdomen, which is covered with scattered stiff hairs. 

 The color is pale and whitish, without the orange which is usual 

 in Ceratinella. The cephalothorax is darkened a little toward the 

 head, and in the male is browner than in the female. The cephalo- 

 thorax is nearly as wide as long, very little narrowed or raised 

 toward the head in either sex. There is nothing peculiar in the 

 arrangement of the eyes. The front middle pair are as usual smallest 

 and about two-thirds the diameter of the upper middle eyes, with 

 which they make a quadrangle slightly higher than wide. The 

 front row of eyes is almost as long as the upper row, with the 

 lateral eyes a little raised above the head. The mandibles have 

 four or five very small teeth each side of the claw. The sternum 



