810 ^Yiscons{n Academy of Sciences, Arts, and Letters. 



acic parts slope gradually from the dorsal eyes, the thoracic 

 slant becoming steeper after the first third. The sides are but 

 little wider below than above. They diverge very slightly from 

 the first row of eyes, and are only a little Avider than the third 

 row, but behind this point they widen out. As a usual thing 

 the front eyes form a curved row, the middle being less than 

 twice as large as the lateral, and close together, while the lat- 

 eral are a little separated from them. In some cases these eyes 

 are close together in a straight row, and the middle eyes may be 

 twice as large as the lateral. The quadrangle of the eyes is 

 from one-fourth to one-third wider than long, is wider behind 

 than in front, and occupies from two-fifths to one-half of the 

 cephalothorax. The first and fourth legs are always longer 

 than the second and third, the first leg being always longest in 

 the male. 



Hentz, in his North American Spiders, described a number 

 of small Dendrypli antes which are very difiicult to identify. 

 After comparing a large number of specimens from different 

 parts of the country, we have concluded that parvus is the fe- 

 male of capitatus. Our aestivalis and also aestivalis Emerton, 

 are identical with capitatus. We had supposed that octavus 

 and hehes H. were also to be referred to this species, but Mr. 

 EmeTton writes to us as follows: ^'As to identification of 

 Hentz's names it is not much more than giiess work at best. I 

 ^an agree with you on capitatus and parvus being probably the 

 eame species as our aestivalis, but octavus and Jiebes are quite 

 as likely to be something else. I have just looked at the original 

 colored figures in the Society of ^N'atural History Library, and 

 they are less like D. aestivalis than the engravings and descrip- 

 tions." Our D. alhoimmaculaius would better go into the 

 genus Ballus. D. vitis of Cockerel], and our D. elegaus, we 

 now think are better placed in Icius. D. bifida Banks and D. 

 aeneolus Curtis are synonyms of D. montanus Emerton. We 

 have compared them carefully and the only difference is that 

 the joints of the palpus are heavier in montanus than in aeneo- 

 lus. Montanus was published in the latter part of 1891, aeneo- 

 lus early in 1892, and bifida in 1895. 



Key to some of the males of the genus Dendry pliant es, includ- 



