BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 10. N:0 11. 15 



rouuded. The scventli segment is not lialf tlie lengtli of tlie 

 sixth (3:8) and much narrower; it is a little broader than the 

 first (17 : 13). 



The epimerals (Pl. III. fig. 25) of the second and third 

 segments are large, ear-shaped, each occupying more than half 

 the length of the segment. The epimeral of the foiirth seg- 

 ment is smaller, narrower behind, scarcely occupying half the 

 segment. The epimerals of the fifth and sixth segments are 

 long and broad; they occupy two thirds of the length of the 

 segment each. The last epimeral is high, perpendicular, con- 

 cealing the whole side of the segment. 



The first pair of pei-eiopoda (Pl. III. fig. 28) are the 

 smallest; the tibia is very broad with a short process against 

 which the dactylus impinges. The second, third, fifth, and 

 sixth pairs are very stont and strong; the dactylus of the third 

 pair is a little smaller than in the others (Pl. III. fig. 29). The 

 femora of the fifth, sixth, and seventh pairs are very broad, 

 but not as broad as long. 



The incahatory pouch consists of four feebly striated laminae 

 on each side. 



The pleon is immcrsed in the last segment of the pereion, 

 but not so deeply as in G. laticauda. The lateral parts of the first 

 segment are partly covered by the seventh segment of the pereion. 

 Its visible part is broader than half of the fifth segment. The se- 

 cond to fifth segments are equal in breadth; the fifth is the longest. 

 The pleon is shorter than the urus (7 : 9), but fully as broad. 

 The pleon and urus together are only a third of the length of the 

 pereion with the head, and a fourth of the length of the whole 

 animal. (In G. laticauda pleon and urus together are about a 

 .third of the whole length, in G. crassus exactly the third.) 



The pleopoda are largely developed, reaching över half the 

 under-side of the urus. 



The urus is broader by a third than long; its anterior 

 margin is broader than the postcrior (3: 2), deeply cmarginated 

 in the middle, with two lateral and one median angular exten- 

 sions. The lateral margins are straiffht, the hinder corners 

 feebly rounded. The posterior margin shows a very slight 

 emargination. 



The uropoda (Pl. III fig. 30) quite reach to the hinder 

 margin of the urus. They are robust with lanceolate subcqual 

 rami. The rami are longer than the peduncle. 



