404 TiY- J. G. cle Man on 



If this specimen Is really the male of Spiront. rectuostris 

 (Stinips.), the sexnal difterences arc considerable. 

 Inland Sea of Japan. 



Spirontocaris propugnatr'uv, sp. n. 



Related to Spiront. stylus (Stimps.), gracilis (Stimps.), 

 and amabilis, Lenz.*, and characterized hy the elongate 

 rostrum and its toothing. 



Body slender. Carapace, rostrum included, little shorter 

 than abdomen ; exclusive of the rostrum the carapace measures 

 only one seventh of the whole length. The rostrum a little 

 more than twice as long as the remainder of the carapace, 

 arising at one third of its length from its anterior border ; it is 

 styliform, very little dilated, gradually tapering, and the 

 anterior half is gently ascending. Upper margin with seven 

 teeth that reach to the middle of the free portion, two on the 

 carapace ; lower margin with ten teeth that reach to the tip. 

 The rostrum extends two fifths of its length beyond the 

 scales. Antennal spine small ; supraorbital and pterygo- 

 stomial spines wanting. 



Third segment of the moderately geniculated abdomen 

 slightly produced in an obtuse lobe posteriorly. Fourth and 

 fifth segments of subequal length, postero-lateral angle of the 

 fourtii obtuse, that of the fifth ending in a sharp tooth. 

 Sixth segment twice as long as broad; telson one fourtli 

 longer than sixth segment. 



External maxillipedes very short, barely reaching to the 

 end of the antennal peduncle. 



Legs of first pair still shorter, reaching witli their lingers 

 beyond basal joint of antennal peduncle. Carpus of second 

 legs 7-articulate, the second and the sixth joints the shortest, 

 the third the longest. Following legs slender, e. g., mero- 

 podites of antepenultimate pair eleven times as long as broad. 



Length of single specimen 33'2 mm. ; carapace, rostrum 

 included, 15*2 mm. long. 



Inland Sea of Japan, 6 fathoms. 



Spii'ontocaris alcimede, sp. n. 



Closely related to Spiront. gracilis, Stimps., and Spiront. 



Jlexa, Rathb., from the north-west coast of North America f. 



Abdomen once and a half as long as carapace (rostrum 



* Confer Rathbun, I. c. pp. 77, 79, & 84. 

 t Rathbun, /. c. pp. 77 <fe 78. 



