Zoology.-] NATURAL HISTORY OF VICTORIA. \_Crvstac ea 



membranous, crustaceous at base. Hind leg of male simple, of female feebly didactyle. 

 Outer maxillipede with a row. of spines on outer edge of fourth joint, which is 

 transversely ridged on convex lower surface ; thighs of two anterior pairs of legs 

 abruptly thicker than the others. Sternum semi-oval, with a short spine at hind outer 

 angle of last joint and more near middle of outer ends of other joints. Order of 

 length of thighs, two, three, four, one, and five. Colour: Reddish, dull cinnamon- 

 brown on upper surface, sides of carapace and outer antennas spotted with round, 

 darker, unequal clouds of same colour, and a few irregular marks of dark V^andyke 

 brown on telson and lateral tail flaps; underside of abdomen pale yellowish; under- 

 side of carapace cinnamon-brown, with blackish-brown on basal portions of outer 

 antennse and anterior spine of carapace, behind bases of legs and on swimmerets. 

 Measurements: Length of average specimen from anterior edge of outer antennae to 

 end of telson, 4 in. 7 lines. Proportional measurements to that length, as 100: 

 greatest width in front of carapace, i-^o', depth of lateral sinus, V<nj j width of ditto, 

 y?ny; space between inner angles of orbit, xo'sJ length of carapace, y,^s ; width of 

 second abdominal segment, ytj'ij ; length of telson, or last abdominal segment, -j^o"^ ; 

 length of first joint of outer antennae, ^-Jjy; width of ditto, y^oJ length of second 

 joint, T%'^ ; width of ditto, -f^jj ; length of third joint, yf o J length of lamina, y'J'jj ; 

 width of ditto, ^yjf ; length of first joint of inner antennse, y^^; width, ^-gij; length 

 of second joint, -y^^; width, yj^; third joint, -j-g^Tj. 



Reference. — Zool. Misc., v. 2; t. 119. 



I retain Leach's name for this species, as the first pul)lished, and 

 think it undesirable to use for it, as Mr. Spence Bate has done, 

 P^ron's manuscript name /. incisiis in the Paris Museum, referred 

 to but not used by Leach in his original description. 



One enormous specimen, 9 inches long and 5 in. 3 lines wide 

 at front of carapace, presented by D. Best, Esq., from Phillip 

 Island, is more roughly granular than usual and has seven 

 distinct, large, angular teeth behind sinus. Not very uncommon 

 in Hobson's Bay and on the shores outside Port Phillip. 



Explanation of Figures. 



Plate 199. — Fig. 1, dorsal view of average specimen, natural size, male. Fig. la, under view 

 of the same. Fig. 16, flagella of inner antennse, magnified to show tufts of hairs on outer 

 branch. Fig. Ij-f, inner antenna;, natural size. Fig. Ic, one of the outer antenusB, viewed from 

 below, natural size. Fig. \d, outer maxillipede, natural size, showing spinous crest on outer 

 edge of fourth joint, and transverse sulcation of its lower surface. Fig. le, jaws, natural size. 

 Figs. 1/, \(i, lA, \i, \k, five thoracic legs, natur.al size. Figs. \l, \7n, l«, lo, four swimmerets of 

 abdominal segments, twice the natural size. Figs. 2, '2a, 26, 2c, swimmerets of female, twice the 

 natural size. 



Frederick McCoy. 



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