NO. 1199. CRUSTACEANS OF WEST AFRICA— BATHBVN. 301 



The generic name Hippa has here a different signification from that 

 commonly indicated. Hippa was established by Fabricius in 1787.* 

 Five species were assigned to it, one of which should still remain in the 

 genus. Of these five species four were removed in 1798 by Fabricius 

 himself to other genera, namely, the species symnista, dorsipes^ and 

 scahra to Albtmea, and the species variolosa to SymetJiis=Zanclifer 

 Henderson, 1888. The single original species, adactyla, left by Fabri- 

 cius in the genus Hippa, should be regarded as the type of the genus. 

 This species was later made the type of the genus Bemipes by Latreille, 

 1806, under the name Remipes testiidinarius. Bemipes, therefore,, 

 becomes a synonym of Hippa. 



Tribe PAGURIDEA. 



Family OCENOBITID.^. 



Genus CCENOBITA Latreille. 

 CCENOBITA RUBESCENS Greeff. 



Coenohita rugosus Greeff, SB. Ges. Beford. Naturw. Marburg, 1882, No. 2, p. 28 



(not Milne-Edwards). 

 Coenohita ruhescens Greeff, SB. Ges. Beford. Naturw. Marburg, 1884, No. 2, j). 53. — 



OsoRio, Jor. Sci. Lisboa, XI, 1887, p. 222. 



West African islands. — St. Thomas Island (Greeff, Osorio); Rolas 

 (Greeff, Osorio). Apparently one species only inhabits these islands, 

 and was designated first by Greeff as G. rugosus Milne-Edwards, and 

 later as a distinct species, G. ruhescens Greeff. Osorio records it under 

 both names. 



According to Greeff, these hermits on the island of St. Thomas 

 inhabit many different kinds of shells as well as the tests of the sea 

 urchins, Ecliinometra suhangularis and Hipponoe eseulenta. They are 

 numerous near the beaches, but migrate into the interior, distributing 

 and misplacing their marine shells over the whole island, as the growth 

 of the inhabitant or the injury to the shell requires its abandonment. 

 In such cases they often take refuge in land shells, and returning sea- 

 ward scatter these again far from the place where they have arisen and 

 properly occur. For example, hermits were found on the beach at the 

 mouth of a river in land shells, which naturally do not occur on the 

 island at less than 800 meters altitude. 



Osorio found some examples living in the grains of a palm, Ulais 

 guineensis. 



Family PAGTJEID^. 



KEY TO THE WEST AFRICAN GENERA OF THE FAMILY PAGURIDiE. 



A. Pleon soft and membranaceous, imperfectly segmented. 



B. First and second abdominal segments without genital appendages. 

 C. Fifth leg of male on left side without an appendage at base. 

 D. No movable rostriform process. 



Mantissa Insectoruni, pp. 329, 330. 



