Superfamily Arglopoidea 



TABLE OF GENERA OF THE CTENID/E 



A. With only two tarsal claws. 



B. Anterior row of eyes very strongly recurved. P. 556. 



Ctenus 

 BB. Anterior row of eyes only slightly recurved. P. 556. 



Titiotus 

 AA. With a third tarsal claw. P. 557. Cupiennius 



Genus CTENUS (Cte'nus) 



The eyes are in three rows, the anterior lateral eyes being 

 opposite the posterior median eyes or nearly so (Fig. 625). The 

 anterior lateral eyes are smaller than the anterior median eyes. 

 The tarsi bear only two claws. 



Three species have been found in the United States; the 

 following are the better known of these: 



Ctenus hibernalis (C. hi-ber-na'lis).— - This is a tawny species 

 with a median, longitudinal, yellowish band above extending 

 over both the cephalothorax and the abdomen, and with a darker 

 band on either side. The length of the body of the female is 

 one third inch. It is widely distributed in the Southern States. 



Ctenus punctulatus (C. punc-tu-la'tus). — This species is 

 described by Hentz as "yellowish rufous; cephalothorax with 

 two longitudinal blackish lines and two fainter scalloped ones 

 on each side; abdomen with two subobsolete lines of minute 

 white dots becoming more distinct toward the apex, where 

 may be seen a few irregularly placed white dots on the outside 

 of the lines, same colour unspotted beneath." The female meas- 

 ures one fourth inch in length. The species is widely distributed 

 in the South. 



Genus TITIOTUS (Tit-i-o'tus) 



The anterior eyes are in a slightly recurved row, are equal 

 in size, and are equidistant. The median ocular area is longer 

 than wide and its sides are subparallel. The clypeus is more 

 than three times as wide as the diameter of an anterior eye. 

 The following is the only known species. 



Titiotus calif omicus (T. cal-i-for'ni-cus). — The body of 

 the female measures two thirds inch in length. It was described 

 from California. 



556 



