FiLiSTATA? (Latr.). 



Eyes 8, nearly equal in size. PI. 2, fig. 6 h; legs 1. 4. 2. 3. 

 lingua surrounded by the maxilla?, which are bent and pointed 

 at their apex. The mandibulae (cheliceres) are united together, 

 so as to have no reciprocal motion, except by means of their 

 teeth, which are very short. This is a remarkable character, 

 which induces me to believe this may not belong to Filistata, 

 and in that case must be the type of a new genus. These 

 spiders form white silk tubes, in walls and crevices of rocks ; 

 the orifices of those tubes are spread and closely fixed on the 

 edges of the stones which make their abodes. I kept several 

 alive under glass, and witnessed the reproduction of their legs. 

 The part torn off does not grow gradually ; but when the 

 spider casts its skin, that part comes out with all its joints from 

 the skin, only somewhat shorter than it was before. It is 

 important to observe that, owing to this fact, the character 

 derived from the respective lengths of the legs is often de- 

 ceptive, as spiders in their conflicts often lose their legs, and 

 frequently offer the characters of two different genera on that 

 account. It is therefore necessary to compare many specimens 

 and the two sides of the spider ; but that excellent character 

 ought not to be given up. One species. 



Dysdera, (Latr. Walck.). 



Eyes 6, PI. 2, fig. 2 h ; legs 1. 2. 4. 3. lingua truncated. One 

 species. A male and a female were sent to me by Dr. T. W. 

 Harris, one of the most accurate and indefatigable entomolo- 

 gists in this country, who found them in a cavity under ground. 



Segestria? (Latr.). 



Eyes 6 ; legs 1. 2. 4. 3. lingua longer than broad ; maxilla 

 elongated, narrower above. One species, which is found under 

 the bark of trees in silk tubes. I marked this with a point of 



