434 



pigment light red. Superior antennas scarcely attaining half the length of 

 the body, peduncle comparatively short and massive, with the joints succes- 

 sively decreasing in size, 1st joint rather thick, and divided at the end into 

 several acute lappets, flagellum about 3 times as long as the peduncle, and 

 composed of about 28 articulations, the 1st of which is very much elongated. 

 Inferior antennae of quite an unusual length, exceeding even that of the 

 whole body, basal joint very broad and produced at the end posteriorly to 

 a strong, deflexed spine, the last 2 joints of the peduncle nearly equal-sized' 

 flagellum extremely slender and elongated, being from 5 to 6 times as long as the 

 peduncle, and composed of numerous articulations, the 1st of which is much 

 the largest. Gnathopoda nearly exactly alike, both in size and structure, 

 carpus slightly widening distally, and having inferiorly several transverse 

 rows of fine bristles, propodos considerably shorter than the carpus and 

 somewhat expanded, being regularly ovate in form, about twice as long as 

 it is broad, palm occupying the greater part of the inferior edge, and defined 

 posteriorly by an obtuse angle without any spines but having across it a 

 transverse series of delicate bristles. Pereiopoda extremely brittle and densely 

 edged with fascicles of short bristles; the 2 anterior pairs fully twice as long 

 as the gnathopoda, and having the propodal joint very much prolonged, equal- 

 ling in length the 2 preceding joints combined; the 3 posterior pairs rapidly 

 increasing in length, the last pair considerably exceeding half the length of 

 the body, basal joint of antepenultimate pair rather small, that of last pair 

 more than twice as large, and considerably expanded in its proximal part, 

 posterior edge slightly sinuated and obscurely serrated; dactylus in all pairs 

 extremely elongated, and sharply pointed. The 2 anterior pairs of uropoda 

 rather small, especially the 2nd pair; last pair, on the other hand, very 

 fully developed, nearly attaining the length of the whole urosome, basal part 

 somewhat elongated, rami narrowly lanceolate, the inner one a little longer 

 than the outer, both being densely edged with small spinules and also, 

 along the inner edge, with slender setse. Telson not nearly reaching to the 

 end of the basal part of the last pair of uropoda, and oval triangular in 

 form, tip tridentate, the median projection considerably larger than the other 2. 

 Colour rather gorgeous, the body being variegated all over with red, orange 

 and pure white. Length of an apparently young specimen 10 mm. 



Eemarlis. - The present form described at an earlier date by the 

 author as a species of Halimrjes, somewhat resembles the Paramphitkoe 

 frayiUs of Goes, which latter form was referred by Boeck to his genus 

 Tritropis. It is, however, very markedly distinguished from that form, by 

 the absence of any keels on the metasome, by the rather different shape of 

 the gnathopoda, and by the structure of the telson, which is entire, not, as 



