REPORT ON THE AMPHIPODA. 195 



" The other is an inch iu length, entirely crimson except its black eyes. The head is blunt, thi; 

 lower antenuiB ciliated and extending to the second segment, and the upper ones to the 

 third segment ; first two segments nearly as long as the three next, and about one-third of 

 the whole length ; on the middle of the first is a spine ; two last segments short and heart- 

 shaped. Hands having a long curved finger ; an imperfect thumb on the second pair of 

 legs ; a tubercle at the base of the ovate carpus, and a small spine at the middle. This 

 might be called C. sanguinea, from its colour, which it retains in spirit. 



" These curious animals are found among clusters of zoophytes and delicate sea-weeds. Their 

 mode of wall^ing is like that of some caterpillars, who bring the tail forward to the head 

 and then thrust the body forward its whole length to prepare for another step." 



Mayer, 1882, considers that the descriptions of Caprel la, •faru/uhiea given by Gould and Stimp.son 

 leave the species indeterminate. 



1841. Koch, C. L. See Note on Koch, 1835. 



1842. GooDsiR, Harry D. S., lost in Sir J. Franklin's Expedition of 1845. 



On a New Genus, and on Six New Species of Crustacea, with Observations on 

 the development of the Egg, and on the Metamorphoses of Caligus, Carcinus and 

 Pagurus. The Edinburgh New Philosophical Journal. Vol. xxxrii. Edinburgh, 

 1842. pp. 174-192. PI. 3. 



The pages 363-368 of this volume by the same author, though mentioned iu Boeck's list, do not 

 refer to the Amphipoda. Under the title above given. Section IV. is " On the Structure and 

 Habits of the Caprellx ; -with descriptions of some neio Species." 



Goodsir gives a short account of the circulation of the blood in the Caprellx, describes the ovaries, 

 and in regard to the process of exuviation says that the skin " bursts behind the head in a 

 transverse direction, and also down the mesial line of the abdominal surface." He speaks 

 of their being little known, owing "firstly, to their pelagic habitats," and further on says, 

 " they are in general local in their habitats, frequenting coralines which are found in deep 

 water." As a matter of fact, the Caprellidfc have a very extensive distribution, and may 

 be found in great profusion between tide-marks. The species which he describes and 

 figures are : — 



Caprella sjmiosa, of which he says, " this species difi'ers from the Caprella Phasina of 

 Colonel Montagu in having five spines on the first thoracic segment, and from the 

 segments being considerably longer. The third joint of the superior antennae is very 

 much longer, and the first pair of feet are also minute and slender, differing in so far from 

 those of Phasma, which are strong and powerful. The inferior edge of the last joint of the 

 second pair of feet is also armed with two strong spines, whereas in Phasma there is only 

 one strong spine." It is nevertheless identified by Mayer with Protella phasma without 

 hesitation, in accordance with the opinions of Bate and Westwood, and of Boeck. 



Caprella tuberculata, the full description of which is followed by the remark, " This species is 

 apt to be confounded with the Cajjrella acantlilfera of Leach, but may be distinguished 

 from it by the double fringe of spines on the lower edge of the inferior antennie ; tlic 

 superior antennas are also much shorter than those of the acanthifera." 



Caprella Ixvis, of which he says, " this species may be distuiguished from Caprella linearis, with 

 which it is most apt to bo confounded, by its greater comparative size, the structure of the 

 antenna ; by the shortness of the post-occipital segment ; the situation of the swelling on the 

 first thoracic segment, wh'ch is at the posterior edge, whereas iu the linearis it is at tlie 



