58 PECKHAM. [Vol. ?>. 



row. The third row is plainly narrower than the cephalo- 

 thorax at that place. The first leg greatly exceeds the others 

 through the elongation of the coxa and trochanter, which, taken 

 together, are a little shorter than the femur, the coxa being a 

 little longer than the trochanter. The first leg is longer than 

 the second by the tibia, metatarsus and tarsus. The coxa of 

 the first is nearly twice as long as the coxa and trochanter of 

 the second taken together. 



This genus belongs to Simon's "Groupe des Diolenii" 

 (Comptes-rendus de la Societe Entomologique de Belgique, 

 Seance du 5 Juillet, 1884), which has hitherto been thought to 

 be confined to the Malay Archipelago and Australia. 



The form and relative length of the joints of the first leg 

 and the length of the cephalic part distinguish it from the 

 other genera of the group. 



AVITUS DIOLENII, SP. NOV. 



Plate V, figs. 3-3c. 



S . Length, 7. Length of cephalothorax, 3 ; width of 

 cephalothorax, 2. '2. 

 Falces, 2.2, without the fang, which is as long as the 



falx. 

 Legs, 1432 ; first pair stoutest and much the longest. 



The palpus is long and slender. The clypeus is narrow. 

 The falces are long and horizontal, as seen in PI. V, fig. 3. In 

 the figure which gives the front view of the face, they are 

 shown fore-shortened. 



In our specimen the hairs are nearly all rubbed off". The 

 cephalothorax is dark brown, darkest on the cephalic plate ; a 

 few white hairs are left, on the sides and above. The abdomen 

 is of a much lighter brown with a white band around the an- 

 terior end and along the sides, and two pairs of white spots, 

 one on the anterior part of the dorsum and one about in the 

 middle, the anterior two being connected by slender lines 



