200 DR. W. T. CALMAN ON THE MACRUROUS [Mar. 6, 



as tlie palm, a small tooth at base of immovable finger. Third 

 pei-feopods a little stouter than fourth (Plate XIII. fig. 50) ; merus 

 in both with three spines below ; propodus about three and a half 

 times as long as dactylus, wliich is unarmed except for the 

 terminal spine. Dactylus of fifth pair (Plate XIII. fig. 51) one- 

 third of length of propodus, with a comb of about 37 slender spines 

 besides the stout terminal spine. Telson (Plate XIII. fig. 52) 

 equal to sixth abdominal somite. Outer plate of uropods sliglitly 

 shorter than inner, with a transverse row of about fourteen 

 spines. 



Total length 9 mm. Eggs -45 x '62 mm. 



Remarks. — This species is at once distinguished from all other 

 Atyidfe known to me by the structure of the first pair of chelpe. 

 In the absence of spines other than the apical one on the dactyli 

 of the third and fourth pairs of legs, it resembles the species 

 described above as Limnocaridina parvida. 



Occurrence. — Kala, 19.xi.04, " Taken on rocks, shallow water." 

 One specimen. 



Kirando, l.xii.04. " Taken in about 8 fathoms of water among 

 shells." Six specimens. 



Utinta, 6.xii.04. " Dredged in about 15 fathoms, among 

 shells." Many specimens. 



Caridella minuta, sp. n. (Plate XIII. figs. 53-56.) 



Description. — Rostrum (Plate XIII. fig. 53) hardly reaching 

 beyond first segment of antennular peduncle, about one-quarter 

 of length of carapace, straight, teeth ^ . Antennular peduncle 

 not reaching to end of antennal scale, second and third segments 

 broader than long, external spine of first segment not reaching end 

 of segment, no distinct distnl spine. Distal edge of antennal 

 scale projecting beyond external tooth. Third maxilliped extend- 

 ing beyond antennular peduncle. First perseopods (Plate XIII. 

 fig. 54) very short and stout ; carpus bioader than long, strongly 

 excavated distally ; chela nearly three times as long as carpus and 

 a little broader, about twice as long as broad ; fingers two-thirds 

 as long as the palm, slightly gaping ; no tooth at base of immov- 

 able finger. Second perajopods (Plate XIII. fig. 55) more slender ; 

 carpus twice as long as broad ; chela one and a half times as long 

 as carpus, fingers a little longer than palm. Last three pairs of 

 pera?opods (Plate XIII. fig. 56) similar and rather stovit ; dactylus 

 at least one-third of length of pi'opodus, and little more than 

 twice as long as broad, with eight strong spines of which the 

 second, not the terminal one, is the largest. Telson equal to sixth 

 abdominal somite. Outer plate of uropods slightly shorter than 

 inner, with a transverse row of four spines. 



Total length 4 mm. Eggs -22 x 15 mm. 



Remarks. — Owing to the veiy small size of this species, it is 

 extremely diflicult to determine its exact branchial foimula, but 

 I have satisfied myself that it has no pleurobranch on the 



