1889.] NATURAL SCIENCES OF PHILADELPHIA. 343 



broadened and elevated by two separate blunt projections which are 

 surmounted by a blunt, rather prominent spine. In youth the abdo- 

 men is much higher in the middle region. See Plate XI, fig. b. 



The inferior spinnerets much thicker than the superior, two jointed 

 with the second joint much shorter than the first. Cribellum broad, 

 nearly the width of the abdomen, divided in the middle. 



Palpi with prominently thickened patellar and tibial joints and a 

 curved claw, that is provided with three teeth. 



Legs long, slender with short close pubescence and few scattered 

 short spines; the base of femur I and II at the inner side suddenly 

 compressed and in that compression a brush of long hair Calamistrum 

 itb of the length of metatarsus IV. 1. 2. 4. 3. 



( 'ephalothorax long 5mm. abdomen 11mm. 



Femur I 12mm. Patella 15 Tibia 10.4 Metatarsus 12 Tarsus 2.5 total 38.4 



Femur II 11mm. Patella ]. 5 Tibia 9.6 Metatarsus 10 Tarsus 2.2 total 34.3 



Femur III 9mm. Patel'a 1.3 Tibia 6.2 Metatarsus 6.4 Tarsus 1.2 total 24.1 



Femur IV 9,5mm. Patella 1.5 Tibia 8.5 Metatarsus 8. Tarsus 14 total 28.9 



Explanation of Plate XI. 



Fig. a. Dinopis spinosus Marx, enlarged. 



Fig. b. Cephalothorax from above. 



Fig. c. Cephalothorax from front. 



Fie', d. Cephalothorax from the side. 



Fig. e. Cephalothorax from below. 



Fig. f. Tarsal claws of 1st leg. 



Fig. g. Palpal claws. 



Fig. h. Epigynum. 



Fig. i. Spinnerets with cribellum:'" 



Fig. k. Abdomen of adult from the side. 



Fier. 1. Abdomen of young from the side. 



*& 



Fig. m. Metatarsus IV with calamistrum. 



