58 bulletin: museum of comparative zoology. 



Lasiodora curtior/ sp. nov. 

 Plate 4, fig. 6, 7. 



Type. — M. C. Z. 63. 9. Brazil: Rio de Janeiro; Vassouras, 

 March, 1871. B. P. Mann. 



Paratype. — M. C. Z. 64. 9. Brazil: Rio de Janeiro ; Vassouras, 

 March, 1871. B. P. Mann. 



Integument of cephalothorax, legs, palpi, and chelicerae dark 

 chestnut; endites ventrally distinctly lighter as usual, more pinkish. 

 Pubescence mouse colored. Bristles brown, lighter distally. Hairs 

 of fringe of chelicerae and endites rust-red. 



Cuspules of labium and endites as usual. 



A line tangent to anterior edges of anterior median eyes passes 

 in front of middle of surface of each lateral eye. Anterior median 

 eyes equal in diameter to the laterals; their radius or slightly more 

 apart and an equal distance from the lateral eye on each side. Poste- 

 rior lateral eyes equal in long diameter to the anterior laterals, from 

 which they are separated by a little less than their radius. Posterior 

 median eyes with diameter smaller than that of the laterals in about 

 ratio 10: 13; very close to the lateral eye, distinctly farther from the 

 anterior median eye on each side. Posterior median eye situated 

 well caudad so that a line tangent to its caudal edge and that of the 

 lateral eye of the same side passes caudad of the anterior median eye 

 of the opposite side. Ocular area wider than long in the ratio 55: 28; 

 slightly wider behind than in front (55: 53.). 



Stridulating spines mostly varying in length, shorter, and decidedly 

 relatively more slender than in L. diffcrcns (Plate 4, fig. 6) and also 

 more numerous; also extending farther distad on the joint than in 

 that species. Plumose hairs found on trochanter and most of femur 

 as usual. 



Female (type). Length of cephalothorax, 19 mm.; width, 17 mm. 



