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



distal spine i^eaching middle of second segment. Antennal scale 

 (Plate XI Y. fig. 59) little more than half length of carapace, ex- 

 ternal spine not reaching beyond distal margin. Third maxillipeds 

 reaching a little beyond tip of antennal scale, terminal segment 

 a little longer than preceding. First and second perseopods not 

 dissimilar in shape and size"; first pair (Plate XIV. fig. 60) hardly 

 extending beyond penultimate segment of third maxillipeds. 

 Carpus of first pair nearly three quarters as broad as long, less 

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

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

 Third pergeopods (Plate XIY. fig. 62) stouter than the following ; 

 mei'us with four spines on distal half of lower edge ; propodus 

 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 perteopods (Plate XIY. fig. 63) with 

 propodus longer than merus ; dactylus, inckiding terminal spine, 

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

 edge. 



Total length, female (not ovigerovis) 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 XIY. figs. 65-72.) 



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

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

 peduncle, nearly horizontal, teeth - 3^5 unarmed above and 

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

 becoming long and slender anteriorly. Antennular peduncle 

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

 ment less than second and third together, external spine of first 

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

 second segment. Antennal scale (Pla,te XIY. fig. 67) about three- 

 fourths of length of carapace, external spine hardly reaching 

 bieyond distal margin. Third maxillipeds not quite reaching tip 

 of antennal scale, terminal segment equal to or a little longer 

 than preceding. First and second perteopods similar to those of 

 A. hrevirostris ; cai-pus of first pair (Plate XIY. fig. 68) five-eighths 

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

 (Plate XIY. fig. 69) nearly three-quarters as broad as long, less 

 than half as long as chela. Third perseopods (Plate XIY. 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 



