63 



The branchial formula is as follows : — 



From Parapasiphiea tbis genus differs in having only one arthrobranch to tho external 

 maxillipeds, and the epipodite of the 2nd maxillipeds reduced to a microscopic rudiment : the 

 body is more compressed and tbe 5th pair of legs more reduced in length. 



Perhaps it should be regarded as a subgenus of Parapasiphiea. 



31. Sympasiphcea annectens, n. sp. 



Illustrations of the Zoology of the Investigator, Crustacea, Plate LI I. Fig. 7. 



Rostrum thin, compressed, ascendant, projecting beyond the eyes, armed a 

 little beyond the middle of the ventral surface with a single spine, produced 

 nearly to the posterior border of the carapace as a sharp carina the gastric 

 portion of which is armed with 5 teeth. 



From the post-orbital spine a ridge runs backwards, and after an initial 

 sinuous course passes across the branchial region almost to the posterior border 

 of the carapace. 



From the post-antennal spine another ridge runs backwards and after givino- 

 off a short branch that joins the post-orbital ridge, sweeps down and for a short 

 distance runs nearly parallel with the lower border of the carapace. 



The 2nd and 3rd abdominal terga . are faintly carinate, the 4th and 5th 

 are sharply carinate up to a sharp spine in the middle of the posterior border 

 of each. Telson with a spinose tip, a little shorter than the endopodite of the 

 tail-fan, which again is a good deal shorter than the exopodite. Eyes brown : 

 a small papilla or inner side of eyestalk. 



The antennular peduncle reaches about two-thirds of the way along the 

 antennal scale : its basal joint is the longest and its middle joint the shortest : 

 its scale, which is nearly as long as the basal joint, ends acutely. 



The antennal scale is not half the length of the carapace proper ; in addition 

 to a midrib, its outer edge also is thickened and ends in a long spine. There is 

 a very strong declivous spine on the ventral border of the 2nd joint of the 

 antennal peduncle. 



