24 THE VOYAGE OF H.M.s. CHALLENGER. 
ee EEE 
Depth in Fathoms. Name. Geographical Distribution, ~ 
(2) (Deep- Ammothea brevipes, Hodge, List of the British Pycno- | Durham Coast ; Heligoland 
water). gonoidea, with descriptions of several new species, (Semper). 
Ann, and Mag. of Nat. Hist., 3d series, xiii. 113, 1864. 
Very insufficiently described. 
(2) Ammothea achelioides, Wilson, Transact. Connect. Acad., | Bay of Fundy (U S. A.). 
vol. y. part 1, p. 16, 1880. ‘In general appearance it is 
closely similar to Achelia spinosa, Stimpson” (Wilson, 
loc, ctt.). 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 distinet. 
Béhmia, Hoek (1880). 
Mandibles two-jointed, cheliform ; palpi seven-jointed ; ovigerous legs ten-jointed ; 
proboscis conical, entirely bent over to the ventral side. 
() Bohmia chelata, Bohn, sp.; Pycnogonum chelatum, Bohm. | (2) 
Pyenogoniden des Museums zu Berlin, Monatsb. der 
K. Akad. der Wiss. zu Berlin, 1879, p. 192 (pl. ii. 
fig. 55d). 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 Pyenogonum 
in the larval condition. I therefore propose to form a 
new genus for it, and to call it after Mr Béhm. 
Phanodemus, Costa (1836). 
Mandibles cheliform ; palpi three- or four-jointed ; ovigerous legs (2) ; proboscis conical. 
(’) Phanodemus horridus, Costa, Fauna del regno di Napoli, | Gulf of Taranto. 
Crostacei et Aracnidi, Napoli, 1838, p- 8. Deserip- 
tion of this species extremely insufficient. 
(?) Phanodemus collaris, Costa, Fauna del regno di Napoli, | Gulf of Taranto, Gulf of 
Crostacei et Aracnidi, Napoli, 1838, p. 8 Also Naples. 
described insufficiently. 
(*) Phanodemus inermis, Costa, Fauna del regno di Napoli, | Gulf of Taranto, Gulf of 
Crostacei et Aracnidi, Napoli, 1838, p. 9. Descrip- Naples. 
tion not better than those of the foregoing species. 
Rhynchothorax, Costa (1861). 
Mandibles cheliform, four-jointed ; palpi eight-jointed ; ovigerous legs (2) ; 
proboscis long-ovate. 
(2) (?) Rhynchothorax mediterraneus, Cos., Microdoride mediter- | North Coast of Africa. 
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 insufficient. 
