278 DREDGING REPORT, 1862. 
described C. ciliata with its short telson approaches more nearly 
to Mr. Spence Bate’s two species, but the description of these 
latter forms are so brief, that we have no means of judging how 
far C. gracilis and C. longicornis agree with C. ciliata. The 
known species of Cyrianassa may, however, be thus separated :— 
C. elegans, Norman. Telson produced. Abdominal feet, 
three pairs. 
C. gracilis, Spence Bate. Telson very short. Abdominal feet, 
five pairs. 
C. ciliata, Norman. Telson very short. Abdominal feet,two pairs. 
C. longicornis, Spence Bate. Telson very short. Abdominal 
feet, one pair. 
Tt must be understood that the foregoing Catalogue has 
reference to the Crustacea exclusively as regards the particular 
expedition to which it refers; and that many species here recorded 
as r., are abundant in other localities off our coast. 
Crangon Allmanni (Kin) was dredged abundantly everywhere. 
I also found this species to be common in deep-water in the 
Shetland seas, and Mr. Edward has taken it at Banff. It will 
probably prove to be widely distributed around our coast, and that 
shrimps dredged in the Coralline Zone, and hitherto referred to 
as Crangon vulgaris belong to this species. 
Crangon spinosus (Leach). A few examples dredged in 35 
fathoms, 20 miles east of Tynemouth, and also in deep water off 
Berwick. A specimen from the latter locality was remarkably 
large, measuring two inches and a quarter from the extremity of 
the telson, to the end of the antennal scales. 
Mysis spiritus (Norman.) The male of this species, which was 
not previously known, was found in some numbers, together with 
more numerous females. It was taken on all the sandy ground 
which was dredged. The fourth abdominal foot of the male 
terminates in two long nearly equal, ciliated, branches, and thus 
differs widely from the same organ in J. flecuosa (Miller), which 
has the inner branch very short, and the outer very long, and 
girt through its distal half with a spiral row of exceedingly 
minute spines. The male of Mysis flexuosa (Miiller) is synonymous 
with Themisto brevispinosa (Goodsir), and the genus Themisto, 
