105 



but not enough to call falciform ; the rostrum is regularly 

 tapering. The proportions of the carapax are also differ- 

 ent, the length being to the breadth as three to two. The 

 modification of the diagnosis of the genus proposed by 

 Mr. Lockington cannot be allowed, as the postocular is 

 present though small. 



Inachodes breviroslrum Lockington, 1. c., July 17, 1876. 



A single dry specimen of this apparently good species 

 was received. 



Epialtus minimus Lockington, 1. c., July 17, 1876. 



This apparently new form differs greatly from the other 

 species of the genus with which we are acquainted. 



Anaptychus cornutus Stm., Ann. Lye., vii, 184, pi. II, f. 1. Ala spinosa 

 Lockington, 1. c., July 17, 1876. 



The specimens in no way differ from the description and 

 figure quoted above. 



Atergatis rotundatus Stm., Ann. Lye., vii, p. 202. Atergatis cristatissimo 

 Lockington, 1. c., March 20, 1876; id., Sept. 4, 1876. 



One specimen received. 



Xanthodius Sterriberghii Stm., Ann. Lye., vii, p. 52. ActCKOdes mexica- 

 nus Lockington, 1. c., May 20 and Sept. 4, 1876. 



The two specimens sent agree with Stimpson's descrip- 

 tion and with specimens in the Museum of the Academy 

 from Panama. Mr. Lockington had the paper of Stimp- 

 son's quoted above. 



Xanthodes Taylori Stm., Ann. Lye., vii, p. 208, pi. V, f. 3. Xantho 

 spini-tuberculatus Lockington, 1. c., Feb. 7 and Sept. 4, 1876. 



The single specimen agrees perfectly with Stimpson's 

 description and figure. 



Panopeus purpureus Lockington, 1. c., Sept. 4, 1876. 



Is very near P. validus Smith, but the front is not as 



