MAPRURA. - SCHMITT. 325 



legs. In Parapcnceus paradovus, also, the epipodites on 

 the third legs may be well developed, or reduced, or 

 absent. It may be recalled in this connection that 

 Bouvier 17 himself originally instituted a new genus, 

 Neopenceopsis, for this species, but later referred it to 

 ParapencBUs. 



The inclusion by De Man 18 of such a peculiar form 

 as his PencBopsis challengeri (nom. n. for Penceus 

 serratus Bate) within that already rather heterogeneous 

 assemblage of species, Penceopsis (sensu lato), leads me 

 to suggest the placing of this doubtful Parapenaeid within 

 that genus at least temporarily. Parapaurus africanus 

 Balss, 19 which not only lacks the very important suture 

 lines on the carapace, but has exopodites on the first pair 

 of legs, was made the type of a new genus, Macropetasma, 

 by Stebbing, 20 on the basis of several males from Mossel 

 Bay, Cape Colony. It is to be regretted that Stebbiug 

 did not verify the branchial formula given by Balss 

 (Inc. cit.}, for if the species is definitely without podo- 

 branchs on the second pair of niaxillipeds, it is most 

 peculiar, in view of the forms to which it seems most 

 nearly related. 



PENMOOPSIS MONOCEROS 



(Plate Iviii., figs. 1-2.) 



Penceus ntoHOceros, Fabricius, Entomol. Syst., Suppl., 



1798, p. 409. Id. Haswell, Cat. Austr. Crust., 1882, 



p. 200. 

 Penceus master sii, Haswell, Proc. Linn. Soc. N.S.W., iv. 1, 



1879, p. 42 ; Cat. Austral. Crust., 1882, p. 203. 

 Penceus sp., Whitelegge, Proc. Roy. Soc. N. S. AVales, 



xxiii., 1890, p. 225; Whitelegge, in Ogilby, Ed. Fish 



and Crust. N. S. Wales, 1893, p. 203. 

 Penceus incisipes, Kishiuouye, Jour. Fish. Bur. Tokyo, 



viii., 1900, p. 18, pi. iv., fig. 2, pi. vii., fig. 6. 

 Metapeneus monoceros, Alcock, Cat. Indian Decapod 



Crust., 1906, pt. iii., fasc. i., p. 18, pi. iii., figs. 7-7c, 



and synonymy. Id. McCulloch, Rec. Austr. Mus., vii. 



4, 1909, p. 313. 



17 C. R. Acad. Sci. cxli., 1905, p. 747. 



18 "Siboga" Exped. xxxix.o, Decapoda, pt. i., Penseidse, 1911, p. 76. 



19 In Schultze, Zool. Anthrop, Ergebn. Forschungsreise west. 

 zent. Siidafrica, 1903-1905, v., 1913, Lief, ii., p. 105, figs. 1-6. 



20 Ann. South African Mus. xv., 1914, p. 22, pi. Ixxii. 



