168 F'LAGUSIA UEPRESSA SAY. 



the upper margin of the palm is marked by a somewhat pro- 

 minent line, which terminates anteriorly above the articu- 

 lation of the mobile finger into a small spine , two smaller 

 oblique lines parting from it inwardly; the fingers are a 

 little longer than the palm , smooth and a little punctate ; 

 the mobile finger a little arched , its upper margin pre- 

 senting in both sexes a series of eleven or twelve small 

 acute tubercles directed forward, the inner margins present 

 some small denticulations and the fingers have horny and 

 somewhat excavated tips. The convex inner surface of the 

 hands is granulated , but has vo trace of a granulated 

 crest or ridge. 



The ambulatory legs are short , with the meropodites 

 scarcely enlarged , their upper margin terminating anterior- 

 ly into a spine, their upper surface being a little rugose. 

 The propodites are hairy along the edges, and the dac- 

 tylopodites are very elongate and compressed, acuminate 

 and a little arched with hairy margins. 



Male. Female. 



25 m.m. 30 m.m. 

 22 m.m. 27 m.m. 

 24 m.m. 30 m.m. 



Distance of the external orbital angles 

 Length of the carapace 

 Length of the hands 



23. Plagusia depressa Say. 



Confer: Miers, On the Plagusiinae, in: Annals and 

 Magazine of Natural History for February 1878, p. 149. 



This species inhabits, according to Mr. Miers, the so 

 called Atlantic region , the closely allied Plagusia tuher- 

 culata Lam. being distributed throughout the whole Indo- 

 Pacific region. Now the Museum-collection contains , be- 

 sides many specimens of Plagusia depressa Say from Liberia , 

 Saccondi, Boutry, Acra d'Elmina and South America , also 

 a fine female individual from the shores of the island of 

 Amboina , presented by Mr. Hoedt, in 1864. This spe- 

 cimen loholly agrees with the individuals from the West- 

 Coast of Africa, so that this form has a much larger geo- 



Notes from the Leyden IVIuseum, Vol. V. 



