240 Transactions.—Zoology. 
16. Calliope didactyla, nov. sp. Fig. C.3. 
Cephalon without a rostrum; the whole back of the animal smooth. 
Superior antenne two-thirds as long as inferior ; joints of the peduncle 
subequal ; flagellum about 17-jointed, each articulation with an auditory 
cilium and a few short hairs. Lower antenne with the peduncle extending 
to middle of flagellum of upper; basal joint very short, next two subequal ; 
flagellum about 15-jointed. First pair of gnathopoda small; carpus pro- 
duced posteriorly into a large acute projection; propodos subquadrate, 
bulged posteriorly, with an ill-defined palm, and bearing a double-clawed 
dactylos. Second pair of gnathopoda large, carpus triangular, acute, its 
inferior portion separated into a narrow, arcuate projection, ciliated on its 
lower margin, and curving slightly round the base of the propodos; pro- 
podos dilated, ovate, with an oblique and tolerably well-defined palm, 
marked by a double row of long teeth, and its base by two stout spines ; 
dactylos arcuate, with a double row of very short, sharp, equi-distant teeth. 
First and second pairs of pereiopoda slender ; other pairs somewhat larger. 
Penultimate pair of pleopoda reaching slightly beyond the ultimate ; rami of 
all the pleopoda spinose. Telson foliaceous, truncate, slightly produced at 
the apex. : 
Female. Both pairs of ngathopoda small, subequal; carpus developed 
posteriorly into an obtuse projection, which has a small fringe at its apex; 
propodos with a transverse palm; dactylos single and slightly toothed. 
Whole body of a rich brown colour, with greenish grey eyes. Length, 
about °3 inch. 
Among kelp washed upon the beach at Taieri mouth. 
(When preserved in spirits the body becomes yellowish-white in colour, 
and the eyes jet black.) 
17. Calliope fluviatilis, nov. sp. Fig. C.4. 
Cephalon without a rostrum. Body slender, compressed. Eyes large, 
black, rounded. Upper antenne about one-fourth shorter than lower ; 
peduncle—with apparently only two joints—not reaching to extremity of 
penultimate joint of peduncle of lower. First pair of gnathopoda rather 
smaller than second; carpus triangular, developed posteriorly into a rounded 
lobe, ciliated at the extremity; propodos oval, palm transverse, dactylos 
acute, nearly straight, half as long as propodos. Second pair of gnathopoda 
apparently reversed ; carpus produced anteriorly (posteriorly) into a narrow 
obtuse lobe. Last pair of pereiopoda much longer than preceding. Pleo- 
poda long and slender; antepenultimate and penultimate pairs reaching to 
extremity of the ultimate. Telson squamiform, rounded, entire. Colour 
greyish, more or less marked with dark spots, and frequently covered with 
circular, wart-like markings. Length '2 inch. 
Common in fresh water round Dunedin, 
