94 
THE VOYAGE OF H.M.S. CHALLENGER. 
West American Species. 
Lambrus hyponcus, Stimpson. Panama, Mexico ; Mazatlan. (This species 
establishes the transition to the next section). 
2. Merus-joints of the ambulatory legs without distinct spines or tubercles — 
Atlantic and Mediterranean Species. 
Lambrus angulifrons (Latreille) = Parthenope longimana, Costa. Mediter- 
ranean (to 50 fathoms, Heller). 
Lambrus serratus, Milne Edwards = Lambrus crenulatus, Saussure. West 
Indies (to 13 fathoms) ; Bahia. 
Lambrus agonus, Stimpson. West Indies and Florida Straits (to 84 fathoms). 
Lambrus guerinii, B. Capello. West Indies and Bahia ; Mauritius (type). 
This species, it will be noted, is found in both the Atlantic and Indo- 
Pacific Regions. 
West American Species. 
Lambrus depressinoculus, Stimpson. Mexico ; Manzanillo. 
Indo-Pacijic Species. 
Lambrus pelagicus, Riippell. Red Sea. 
Lambrus turriger, Adams and White. Philippine Islands ; Amboina (15 to 25 
fathoms); Borneo ; North and North-west Australia (to 36 fathoms). 
Lambrus rhombicus, Dana. Yanua Levu, Fiji Islands. 
Lambrus gracilis , Dana. Ovalau, Fiji Islands. 
Lambrus nodosus, Jacq. and Lucas. North, North-east and West Australia; 
New Zealand. 
Lambrus ajffinis, A. Milne Edwards. Indo-Pacific Region (Seychelles to New 
Caledonia). 
Lambrus dejlexifrons , Miers. Ceylon. (This species perhaps forms a distinct 
subgenus). 
Lambrus contrarius (Herbst). 
Cancer contrarius, Herbst, Naturgesch. der Krabben u. Krebse, vol. iv., Heft. 4, p. 8, pi. lx. 
fig. 3, 1804. 
Lambrus spinimanus, Desmarest, Consid. sur la Classe des Crust., p. 36, pi. iii. fig. 1, 1825. 
„ contrarius, Milne Edwards, Hist. Nat. Crust., vol. i. p. 354, 1834. 
Samboangan, Philippines, 10 fathoms (a female). 
The figure of Herbst is a very inexact representation of this species, if the specimens 
