BQ PERCY SLADEN TRUST EXPEDITION. 
In collection I. only, were species from depths below 100 fathoms, viz. :— 
Cyphocaris alicei, Chevreux. 
Stegocephalus globosus, sp. 1. 
Parandania boecki (Stebbing). 
Stenopleura atlantica, Stebbing. 
Chagosia gardineri, g. & sp. n. 
Eusiropsis riisei, Stebbing. 
All of these previously described have hitherto, so far as I know, only been found in 
the Atlantic. 
All necessary references will be found in Mr. T. R. R. Stebbing’s “ Amphipoda” of ‘ Das 
‘Lierreich,’ a work absolutely indispensable to all workers in this subclass, and a model of 
careful and accurate arrangement. I have followed this work in the descriptions of 
species, the basipodite or first free joint being now called the 2nd joint instead of the 1st 
as I have hitherto done. 
The following species may be mentioned as interesting :— 
Colomastix crassimanus (Heller). 
This has generally been united with C. pusillus, Grube, a species not uncommon in 
sponges on our own coasts, from which C. crassimanus is distinguished by the large 
hands of the 2nd gnathopods in the adult male. This form has not, so far as I know, 
been found in this country or anywhere north of the Mediterranean, and appears there- 
fore to be entitled to rank as a distinct species, notwithstanding the similarity of the 
females. 
Eusiropsis riisei, Stebbing. ; 
This species, described and beautifully figured by Mr. Stebbing in the ‘Transactions ’ 
(2nd ser. Zool. vol. vii.) of this Society, is remarkable for the structure of the last joints of 
the pereeopods, which, instead of the nail-like form usual in the Amphipoda, resemble the 
4. preceding joints. The specimen taken by Mr. Gardiner is probably the only one known, 
besides the two in the Copenhagen Museum from which Mr. Stebbing’s description was 
taken: if is fortunately in perfect preservation. 
Chagosia gardineri, g. & sp. n. 
Unfortunately there is only a single specimen of this, which I have assigned 
provisionally to the fam. Calliopiide ; it differs, however, from other members of the 
family in having the 3rd uropods uniramous. The mouth-organs have not been dissected, 
as to have done so would have destroyed the character of the specimen. 
