320 DR THOMAS SCOTT ON THE 



Habitat. — Scotia Bay, South Orkneys; collected in June 1903; Station 325, 

 60° 43' 42" S., 44° 38' 33" W. 



Remarks. — The present form has at first sight a superficial resemblance to Lao- 

 plionte minuta, Boeck, but a closer examination reveals certain differences in the 

 structure and armature of the first and fifth pairs of thoracic legs, as well as one or two 

 other anatomical details sufticient to exclude it from that species. 



Laophonte tviltoni, new species. (PL VII. figs. 7-15.) 



Female. — Body slender and elongated and somewhat similar to the species described 

 above in its general appearance. Length of the specimen represented by the drawing 

 is about 0'9 mm. 



The antennules are composed of seven joints, and the first three are tolerably large 

 and subequal ; the fourth and fifth are very short, while the next two, which are nearly 

 of equal size, are each about one and a half times as long as the fifth. Antennae and 

 mouth organs nearly as in the species previously described. 



The first pair of thoracic legs are tolerably slender, the outer ramus, which reaches 

 to the middle of the first joint of the inner ramus, is three-jointed, and the middle joint 

 is rather longer than the first or third. The next three pairs are somewhat similar to 

 those in Laoplionte australis. 



In the fifth pair, the basal joint is somewhat narrow and suljtrianguhir in outline, 

 and reaches to beyond the middle of the second joint ; it is provided with six seta3, 

 three of which spring from the inner margin and two from the outer margin, and one 

 is articulated close to the apex. The second joint is moderately expanded, the greatest 

 width more than half the length ; distal end produced, triangular in form and provided 

 with one seta on the inner margin, one at the apex, and five on the outer margin. 



Caudal rami as long as the last segment of the abdomen. 



Habitat. — Scotia Bay, South Orkneys, in some siftings from dredged material 

 collected in June 1903 ; Station 325, 60° 43' 42" S.,'44° 38' 33" W. 



Remarks. — This species is rather smaller than any of the other Xaop/ionies described 

 here, and it may be distinguished from them not only by its size Imt also by the 

 structure of the first pair of thoracic legs, and by other, though perhaps less obvious, 

 difi"erences. The species is named in compliment to Mr D. W. Wilton, one of the 

 naturalists who took part in the Scottish National Antarctic Expedition. 



Genus Laophoiitodes, T. Scott, 1894. 

 Laophontodes whitsoni, new species. (PI. VIII. figs. 1-8.) 



Female. — Body narrow, elongated, and tapering slightly towards the distal extremity ; 

 the animal has a general resemblance to the female of Laophontodes typicvs, T. Scott, 

 but is rather more slender, and the caudal rami are sliort, whereas in the species men- 



(koy. sog. edin. trans., vol. xlviii., 566.) 



