102 



MR. R. I. POCOCK ON THE 



[June 3, 



a solitary state, and it is, I believe, an exceedingly pugnacious 

 little animal . . . . " 



Mr. Robson subserviently supplied Dr. Powell with the following 

 additional observations : — " The nests of this spidei- do not, in my 

 opinion, occvir below low water ; but it is difficult to state positively. 

 The mouth of the Lithodomus-hole in which the nest is made is 

 often, if not always, under low water in a tidal pool, and the nest is 

 only to be got at by breaking up the rock with a hea\'5^ hammer, 

 The spider when going to the bottom of the pool, on being dis- 

 turbed, does not take down an aii--]mbble so fai- as I could see, 

 and is able to live a considerable time without air or only the 

 small amount to be found in sea-watei-. I have kept them alive 

 for several days in a bottle quite full [of water]. The cocoons of 

 eggs are found at the end of the hole and always quite diy. I 

 have not seen these spiders at any place but Cape Campbell, and 

 then not far above low-watei- mai-k, thei-e being many feet of 

 water over the i-ocks in which they live at high tide.' 



5. Desis kexvon^, sp. n. (Text-fig. 21.) 



Colour normal ; carapace and mandible }'ellowish red ; legs and 

 abdomen olive-yellow, sternum more uniformly testaceous than 

 the carapace, the scopula on the pi'otarsi of 2nd, 3rd, and 4th legs 

 showing as dusky patches. 



Text-fig. 21 . 



o 







o o 

 O O 



<::i 







B C 



Desis Tcenyonce. 



A, lower side of tlie left mandible, to show the arrangement of the teeth. 



B, eyes viewed from above, the anterior edge of the carapace uppermost. 



C, vulva. 



Carapace low, a little longer than tibia of 1st leg and also longer 

 than the patella and tibia, of 4th. 



