892 MB. F. O. PICKAKD CAMBRIDGE ON [NoV. 29, 



do, pending further material from Surinam, that M. Simon's 

 male is identical with Koch's species from the same locality, is 

 distinguished from the very closely allied genus Psalmopceus by 

 the absence of the stridulating- organ. 



I would like here to call attention to a characteristic feature 

 in these arboreal Theraphosids. "Without any doubt the long 

 feathery fringes on the legs assist the passage of the Spider through 

 the air, for though I have never witnessed such a passage in 

 connection with these spiders from Trinidad, I have noticed that 

 an Avicularia, if irritated off a tree high up, will leap with legs 

 outspread and fall quite softly, the hairs on the legs resisting the 

 air in the descent. An analogous character can be found on the 

 tail of the Pigmy Phalanger, which assists it in its passage amongst 

 the branches and from branch to branch. 



Mr. Potter has also sent me some valuable notes on the habits 

 of these interesting Theraphosids. He tells me that they live in 

 chinks in the bark of trees and in holes in the trunks, being 

 abundant also in the thatched roofs of the houses. The bite of 

 one of these huge spiders proved severe, laying up the victim for a 

 day or two with pains and feverish symptoms, but did not prove 

 fatal. Their food consists of cockroaches and other Orthoptera, 

 grasshoppers, locusts, &c. 



Trustworthy information at first hand on these interesting 

 points is very welcome, for although there is no great difficulty in 

 securing information, it is by no means easy to persuade oneself 

 that any of it is worthy of confidence. 



The following List contains the names of all the Spiders 

 represented in the Natural History Museum from the Island of 

 Trinidad. It need scarcely be remarked that such a list is merely 

 a beginning, and a very small one at that. Still we are very 

 grateful to the kind correspondents who have enabled us to draw- 

 up any list at all, and look forward to a great deal more material 

 being sent over for identification in the near future. 



Fam. CtenizidjE. 



Pseuclidiops hartii Pocock. Mr. J. H. Hart. 

 Actinopus hartii Pocock. Messrs. J. H. Hart, Beaven 



Pake, and Dr. W. Ince. 



Fam. THEEAPHOSIDiE. 



Avicularia avicularia Linn. Dr. W. Ince, Mr. Beaven 



Pake, and the Zoological 

 Society of London. 



Psalmopoeus eamhridgii Pocock. Dr. W. Ince ; Messrs. 



Thos. Potter and C. Taylor. 



Hapalopus incei, sp. n. Mr. J. H. Hart. 



Stichoplastus sanguiniceps, sp. n. Mr. J. H. Hart. 



Fam. DiPLUEiD^. 



Brachyihele antillensis, sp. n. Dr. W. Ince. 



