140 LEANDER «ERHIFER. 



quite straight , in some specimens however is a little recur- 

 vated upwards at its distal extremity. In all oiir speci- 

 mens the distance between the two posterior teeth of the 

 upper margin is a little larger than between the others, 

 the anterior tooth of the upper margin is always more 

 or less remote from the apex , the latter armed on its 

 upper side with one or two very small teeth , very rarely 

 without a tooth. The number of teeth of the upper mar- 

 gin in most specimens amounts to eleven , in some others 

 to twelve, in others again to only ten , but having examined 

 77 specimens I found only two with nine teeth (as de- 

 scribed by Stimpson). The under margin is armed with four 

 teeth in 56 out of the 77 specimens, in 12 only with 

 three teeth. Our specimens therefore either present a re- 

 markable variety or Stimpson may perhaps have examined 

 only a few specimens , accidentally armed with nine teeth 

 on the upper and three on the under margin. It may 

 be allowed to quote the formulas of the teeth of these 77 

 specimens: 



12+2 , . 11 + ] . . 10 + ln 



— J — 1 specimen. — ^ — 5 specimens. -^ — 9 specimens. 



5 5 4 



12 + 2. 11 + 1qi 10 + 1 1 



— + — 1 » — -J — 31 » — ^ — 1 » 



4 4 3 



12 + U 11 + 1 K 10 + 1. 



12+1 ^ 11 + 2 ^ 9 + 2. 



^ 9 » r — 2 » ~ 1 » 



4 4 o 



12 + 1 11 + , 9 + 



-f- 2 » -^ 1 » —4— 1 > 



12 + ^ 11+0 ^ 



-4^ » -^2 . 



12 + . 



So that only one individual wholly agrees with the num- 

 ber of the teeth in Stimpson's description ; this specimen 

 lias a length of 50 nun (rostrum included); the legs of the 

 second pair are 30 mm. loj^g, the wrist extending nearly 

 Notes Irom tlie Leyclen Museiiiii, A'^ol. Ill, 



