Supplement to the New England Spiders. 175 



cause it seems to me to show as well as any other the natural 

 relations of the species which I have been studying. 



At the beginning of the scries come two species which I have 

 described in N. E. Therididae under the name of Pholconnna at 

 the end of the Therididcr. P. hirsuta belongs to a genus near Phol- 

 connna, which Simon in Hist. Nat. Araignees has named An- 

 cyllorhanis. It has small mandibles and the pointed maxillae and 

 the simple male palpi of the Theridider. P. rostrata belongs to 

 quite a different genus, which Simon has called Histagonia, and 

 1 have adopted without having seen H. deserticola, the type species 

 Another species of the same genus is the Exechophysis palustris 

 Banks. Histagonia seems to me most nearly related to Diplo- 

 cephalus rather than to Pholconnna. The mandibles and maxilke 

 are like the Erigonea rather than the Therididar, and the modi- 

 fications of the head and complicated form of the tibia of the male 

 palpi resemble those of Diplocephalus. The tarsal hook is present, 

 though small, as it is in Diplocephalus. 



The new genus Cascola with two species herbicola and alticcps 

 resembles in form and habits Ceratinella, but does not have hard 

 pieces on the back and at the base of the abdomen, nor any of 

 the orange color of Ceratinella. The male palpi are simple in both 

 species, with a peculiar club-shaped process of the palpal organ 

 directed toward the inner side. 



Ceratinella consists of small round spiders, orange-colored or 

 orange brown, with a hard plate on the back of the abdomen in 

 one sex or both. The palpi of the males vary in length, but are 

 all on the same plan, with the palpal organ furnished with a long 

 slender tube turned backward from the distal end of the tarsus 

 toward the base. I consider this genus to include the European 

 C. brevis and the American species which Simon separates as the 

 genus Cera/icetus, the principal difference being in the sinuous claw 

 of the mandible of C. brevis. Ceratinopsis consists also of small 

 and brightly colored spiders with usually distinct black markings 

 on the head and sometimes on the palpi and feet. The palpi 

 resemble those of Ceratinella, with large and more variable tibia;. 

 There are no hard plates on the abdomen. 



Cornicularia includes species resembling Ccratinopsis, but with 

 usually more elongated cephalothorax, and in the males a horn on 

 the front of the head between the upper and lower middle eyes. 

 The male palpi have the tibia enlarged and extended over the back 

 of the tarsus in a long flat process, partly divided into two branches. 

 I include those species which have a double horn on the head, 



