2-1 



THE VOYAGE OF H.M.S. CHALLENGER. 



Deiith in Fathoms. 



(?) (Deep- 

 water). 



(?) 



(?) 



0) 



(?) 

 (?) 



(?) 



Name. 



Geographical Distribution. 



Durham Coast ; Heligoland 

 (Semper). 



Bay of Fundy (U S. A.). 



Ammothea hrevipes, Hodge, List of the Briti-sh Pycno- 



gonoidea, with descriptions of several new species, 



Ann. and Mag. of Nat. Hist., 3d series, xiii. 113, 1864. 



Very insufficiently described. 

 Ammothea wheJioides, Wilson, Transact. Connect. Acad., 



vol. V. part 1, p. 16, 1880. "In general appearance it is 



closely similar to Achelia spinosa, Stimpson" (Wilson, 



loc. cit.). No doubt there is a near relation between 



the genera Achelia and Ammothea, yet a minute 



examination of "adult" specimens of both genera 



makes it necessary to consider these genera pro- 

 visionally as distinct. 



Bohmia, Hoek (1880). 



Mandibles two-jointed, cheliform ; palpi seven-jointed ; ovigerous leg.s ten-jointed ; 

 proboscis conical, entirely bent over to the ventral side. 



Bohmia cheJata, Bohm, sp. ; Pycnogonum chelatum, Bohm. (1) 

 Pycnogoniden des Museums zu Berlin, Monatsb. der 

 K. Akad. der Wiss. zu Berlin, 1879, p. 192 (pi. ii. 

 fig. 5-5'?). As the specimen observed by Bohm is 

 furnished with ten-jointed ovigerous legs, I think there 

 is not a single reason to consider it as a P[/cno(jonum 

 in the larval condition. I therefore propose to form a 

 new genus for it, and to call it after Mr Bohm. 



Phanodemus, Costa (1836). 

 Mandibles cheliform ; palpi three- or four-jointed ; ovigerous legs (?) ; proboscis conical. 



Phanodemus horridus, Costa, Fauna del regno di Napoli, 

 Crostacei et Aracnidi, Napoli, 1838, p. 8. Descrip- 

 tion of this species extremely insufficient. 



Phanodemus collaris, Costa, Fauna del regno di Napoli, 

 Crostacei et Aracnidi, Napoli, 1838, p. 8. Also 

 described insufficiently. 



Phanodemus inermis, Costa, Fauna del regno di Napoli, 

 Crostacei et Aracnidi, Napoli, 1838, p. 9. Descrip- 

 tion not better than those of the foregoing species. 



Gulf of Taranto. 



Gulf of 



Naples. 



Gulf of 

 Naples. 



Taranto, Gulf of 



Taranto, Gulf of 



Rhynchothorax, Costa (1861). 



Mandibles cheliform, four-jointed ; palpi eight-jointed ; ovigerous legs (?) 



proboscis long-ovate. 



(?) Rhynchothorax mediterranews, Cos., Microdoride mediter- 

 ranea, Napoli, 1861, p. 8, Taf. i. fig. 102. A very 

 curious animal, with a short and narrow abdomen of 

 seven joints. The description, however, is uiisufficient. 



North Coast of Africa. 



