170 Some Chaiu/cs iv Crin^tarcan Nomcvrlatnri'. 



1 . The Linn?ean genus Cancer is abandoned by Weber, and 

 among its dissevered parts we find the genus Alphens for that 

 group oi crabs whicli tliree years later Fabricius kept as typical 

 of Caneer. Alplu'ii>< Weber therefore may be considered a 

 synonym of Cancer, and, as it is a synonym, it can no longer 

 1)C employed foi' the macrnran giMUis which has so long served 

 as the type of the Alpheida". 



2. The name Cravgon appears first in Weber attached to the 

 four species of shrimps whidi were later called Alpheus by 

 Fahricius, viz^,, (irams, tdiinihis^ rapax and inahiharieus ; all Vait 

 the last were noinliKi muhi at that time, and therefore malaharira 

 is the type of C;v///.(/o//. In place of Cranyoii Fabricius 1798, we 

 may use Crac/o Tjamarck,*type Crayo cnlt/aris {= Caiieer era nyoii 

 Linnams). 



3. In Weber we find the genus H()iiiarii--<, which is usually 

 attril)uted to Milne EdAvards lS37.t As Weber used Alplien^ 

 to include the typical crabs, abandoning (7a //rr/- altogether, so lie 

 used Jloiiiarus for the lol)ster, crayfish, and other typical species 

 of A-'^tdcii'^ Fabricius 177o and al)andoned Abacus altogether. 

 Instead of I'cgarding lloniarn^ Wel)er as a synonym of Antaeus 

 Fabricius, it is desirable to allow l)oth names to stand each with 

 the type later assigned to it, viz, Hoinaru^^ ga)innarus (Linmeus)'l 

 and Astaeus adaru.s (Linna-us).^ Tliis is in accordance with 

 Canon XXVI of the A. (). U. code, which follows an earlier and 

 similai' canon promulgated 1)y the British Association. 



4. PartJtenope ^^\■l)cr 17'.).") contains six species, fornicata, 

 (I'lrajfa, lovgimana, regina, hir and dubla. Of these the second 

 and last three were lurwiiui inula at that date, levying for iiieata 

 and loiigi 111(1 ua the only valid species. Pa liJienojx' Fahricius has 

 up t(-) this time been limited according to the specification of its 

 type by Leach 1814, as horrida Linnaeus, a species included l»y 

 Weber not in Parfhruope Imt in a list of doul)tful species of 

 Cancer listed in his introduction. Strictly speaking, the lim- 

 itation of Parthenope took place at an earlier date than that of 

 Leach. In 1801 |i Lamarck formed the genus Maja by uniting 

 Inachus and Parthenope, giving the type of the latter group as 



*Syst. Anim. sans Vert., 1.59, ISOl. 



t Hist. Nat. Crust., II, 333, 1837. 



X Milne Edwards, Hist. Nat. Crust., II, 333, 1837. 



H'fttreille, Consid. sur les Crust., 422, 1810. 



ilSyst. Anini. sans Vert, 154, ISOl. 



