202 BR. W. T. CALMAN ON THE MACRUROUS [Mar. 6, 



distal spine reaching middle of second segment. Antennal scale 

 (Plate XIV. fig. 59) little more tlian half length of carapace, ex- 

 ternal spine not reaching beyond ditjtal margin. Third maxillipeds 

 reaching a little beyond tip of anten-nal scale, terminal segment 

 a little longer than preceding. First and second perteopods not 

 dissimilar in shape and size ; fii'st pair (Plate XIV. fig. 60) hardly 

 extending beyond penultimate segment of third maxillipeds. 

 Carpus of fii'st paii- neai-ly three quarters as broad as long, less 

 than half length of chela ; that of second pair (Plate XIV. fig. 61) 

 hardly longer than broad, about two-fifths of length of chela. 

 Third perieopods (Plate XIV. fig. 62) stouter than the following ; 

 merus with four spines on distal half of lower edge ; propodvis 

 more than half as long as merus ; dactylus, including terminal 

 spine, a little more than one-fifth of propodus, with three spines 

 on its lower edge. Fifth perfeopods (Plate XIV. fig. 63) with 

 propodus longer than merus ; dactylus, including terminal spine, 

 about one-fourth of propodus, with about 43 spines on lower 

 edge. 



Total length, female (not ovigerous) 13"5 mm. 



Occurrence. — Mbete, 1.x. 04. " Taken on rocks, shallow water." 

 Many specimens. 



Near mouth of Lofu, 6.x. 04. " Taken on rocks, shallow 

 water." Many specimens. 



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

 specimen. 



A very small specimen taken in a rock-pool at Kasakalawe, 

 4.viii.04, is referred with some doubt to this species. 



Atyella longirostris, sp. n. (Plate XIV. figs. 65-72.) 



Description. — Rostrum (Plate XIV. fig. 65) about five-sixths 

 of length of carapace, equal to or a little longer than antennular 

 peduncle, nearly horizontal, teeth - - ~ , unarmed above and 

 below for one-third of its length from tip, teeth on upper edge 

 becoming long and slender anteriorly. Antennular peduncle 

 (Plate XIV. fig. 66) a little longer than antennal scale, first seg- 

 ment less than second and third together, external spine of fii-st 

 reaching beyond end of segment, distal spine reaching to end of 

 second segment. Antennal scale (Plate XIV. fig. 67) about three- 

 fourths of length of carapace, external spine hardly reaching 

 beyond distal mai-gin. Third maxillipeds not quite reaching tip 

 of antennal scale, terminal segment equal to oi- a little longer 

 than preceding. Fii-st and second perteopods similar to those of 

 A . hrevirostris ; carpus of first pair (Plate XIV. fig. 68) five-eighths 

 as broad as long, about half length of chela ; that of second pair 

 (Plate XIV. fig. 69) nearly thi^ee-quarters as broad as long, less 

 than half as long as chela. Third perajopods (Plate XIV. fig. 70) 

 considerably stouter than the following ; merus with five stout 

 spines, of which the first is one-third of length of segment from 

 its proximal end ; propodus less than two-thirds of length of 



