36() Annals of the South African Mtiscimt,. 



his Hip2}a adactyla. But, as they are now considered 

 generically distinct, the species emeritus has to find a new 

 generic name. This appears to be supplied by an entry in 

 Sherborn's Index AnimaHum, p. 327, 1902. 



Gen. EMEEITA, Meuschen. 

 1778. Emerita, Meuschen, Mus. Gronovianum, p. 87 (Sherborn). 



This name was accepted by Benedict, Bull. U.S. Pish. 

 Comm. for 1900, vol. ii., p. 138, but attributed to Gronovius, 

 and with this attribution Miss Eathbun appears to agree, only 

 correcting the Gronovian date from 1763 to 1764 (Proc. Biol. 

 Soc, Washington, vol. xvii., p. 171, 1904). I am not in accord 

 with these esteemed carcinologists in regarding Gronovius as 

 any authority for Linnean nomenclature, but the intervention 

 of Meuschen allows me to follow them in using the name 

 Emerita. 



Emerita emeritus (Linn.). 



1767. Cancer emeritus, Linn., Systema Naturae, ed. 12, p. 1055. 



1778. Astacus emeritus, Fabricius, Systema Entomologiae, p. 416. 



1778. Emerita e., Meuschen, Mus. Gronov., p. 87. 



1791. Cancer e., Herbst, Krabben und Krebse, vol. ii., pt. 1, p. 8, 

 pi. 22, fig. 3 (not 4 as stated in text). 



1798. Hippa e., Fabricius, Suppl. Ent. Syst., p. 370. 



1837. Hippa emerita, Milne-Edwards, Hist. Nat. Crust., vol. ii., 

 p. 209, the footnote including a reference to the undated 

 Eegne Animal, ed. 3, Crust., pi. 42, fig. 2, a-i. The 

 footnote wrongly attributes Hippa emerita to Fabricius, 

 instead of Hijjpa emeritus. 



1852. H. e., Dana, U.S. Expl. Exp., vol. xiii., p. 409, pi. 25, 

 fig. 9 a-c. 



1910. Emerita emeritus, Stebbing, S.A. Crustacea, pt. 5. 



A specimen sent by Mr. Quekett, from the Durban Museum, 

 has a carapace measuring 30 mm. in length from the central 

 tooth of the tridentate front to the hind margin. 



MACRURA GENUINA. 



1901. Macrura, Alcock, Catal. Indian Deep-sea Decap. Macrura and 

 Anomala, p. 8. 

 In Borradaile's classification, Ann. Nat. Hist., Ser. 7, vol. xix., 

 p. 457, 1907, which Caiman accepts in the Crustacea of Lankester's 



