NO. 1162. BRACIIYURA COLLECTED BY THE ALIlATliOSS—RATUliUN. 579 



42. MITHRAX HEMPHILLI Rathbun. 



Mithrax liemphilli Katiiiuin, I'ioc U. S. Niit. Mus., 1892, XV, p. 263, pi. xxxvii, 

 lig. 2. 



Abrolhos Islands, Brazil. 



43. MITHRAX HISPIDUS (Herbst). 



Cancer hlspidKn IIiCKiisr, Natur. Kriil)lirii ii. Krobse, 17!K), 1,]).217, pi. x\ iii. Ii<;. 



100. 

 AfUlirax hispidus Milnk-Kowahds, Mil■,^ /ool., 1832, II, i'l. VII. 



Abrollios Islands; otl" (Japo St. Hoque, Brazil, 20 fathoms, station 



44. MITHRAX SINENSIS' Rathbun. 



MUlirar Kinrnain 1»a iltiiUN, I'ntc. II. S. Nat. Mus., 1892, XV, p.2()(>, pi. \\\\ iii, li,u. 2. 



Southern part of (lulf of California, 7 to 10 fathoms, stations .5824 

 to 2828, inclusive. 



45. MITHRAX FORCEPS (A. Milne-Edwards). 



MithrttoiiliiH forcrpx A. Mii.nic-Kpwards, Crust. Koff. Mix., 187.'), j). 109, j)!. xxin, 



(ig.l. 

 Mitlira-r forceps MiKK.s, Cliallen;ier Kept., /ool., 188G, XVII, p\}. 87, 88. 



Abrolhos Islands, Brazil. 



46. MITHRAX CORYPHE (Herbst). 



Cancer coryphe Hkuhst, Natur. Krabbon u. Krobse, 1801, III, I't. 2, p. 8. 

 Mithrax cori/phe Rathiuin, Ann. Inat. Jamaica, 1897, 1, p. 11. 



Abrolhos Islands, Brazil. 



47. MITHRAX NODOSUS Bell. 



Mithrax nodomis BKi.h,Proc.7j00l.Soc. London, 183,^), III, p. 171; Tr.inH. Zoo!. Soc. 

 London, 18.3(>, II, p. 53. pi. xi, fig. 1. 



Charles Island, Hood Island, and Duncan Island, all of tlie (lala- 

 pagos group. 



rARTIIENOPIl).K. 



48. THYROLAMBRUS EROSUS, new species. 

 (Plato X LI I, lig. 1.) 



Surface Uiherculate and eroded ■ ixustcrior margin transverse and bor- 

 dered by blunt teeth or lobes; hand dentate or lobate, not spinate. 



This species, although possessing a strong resemblance to T. 

 astroides, differs noticeably in the sli;ij)o of the (jarapace and tlie char- 

 a(;ter of the surface. The carapace is longer, the outline more pentag- 

 onal; the lateral and i)08terior margins, instead of being thin and 



' From "ainuH," ;i gull' or bay, not " 8ina," China. 



