On North American Spiders. 101 
species was found in North Carolina. It is of a glossy brown, ex- 
cept the abdomen, which is piceous. The palpi are so elongated as 
to have all the appearance of legs. j 
Finisrata? (Latr.) — 
Eyes 8, nearly equal in size, ~° as 3 legs 1. 4. 2. 3. lingua sur- 
rounded by the maxille, which are bent and pointed at their apex. 
The mandibule (chélicerés) are united together, so as to have no re- 
ciprocal 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 Finsstara, 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 deceptive, as spiders in their conflicts often lose their legs, and 
equently 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 giv- 
en up. One species. 
Dysprra, (Latr. Walck.) 
Eyes 6, 0° "$ 3 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 entomologists in this country, who 
€m ina cavity under ground. 
Srcrstria? (Latr.) 
: Eyes 6, ae%s ; legs 1.2. 4. 3. lingua longer than broad ; max- 
ille elongated, narrower above. One species, which is found under 
© bark of trees in silk tubes. I marked this with a point of interro- 
Sthon, because’ Latreille in:his last work* excludes this from his 
Be ian ee Se etl ap 
* Familles Naturelles du régne animal. Paris, 1825. 1 Vol. 8vo. 
