of the Fisherij Board for Scotland. 



121 



lower half of the inner margin of the middle joint. The third pair 

 (fig. 28) are somewhat similar to the second, except that they are rather 

 more slender, and that the second joint of the inner branches bears a 

 small spine on the distal end of its outer margin in addition to the two 

 long terminal setse. The fourth pair, on the other hand, scarcely differ 

 from the third except that the outer branches are rather more elongated 

 (fig. 29). 



The fifth pair resemble very closely the fifth pair of the female in Cletodes 

 limicola, so much so that, with the exception of the basal joint being 

 rather more produced, the general configuration and armature of this pair 

 are in the two species almost identical (fig. 30). 



The male is very similar to the female. The antennules of the male 

 have, as usual, a modified structure (fig 22), and the fifth pair of thoracic 

 feet are very small (fig. 31). In the fifth pair of feet the basal joint is 

 nearly rudimentary, and the secondary joint, which is of a narrow cylin- 

 drical form, is provided with only two apical setse, as shown by the 

 drawing. 



Habitat. — Moray Firth ; moderately rare. 



Remarks. — The form just described has been known to me for a con- 

 siderable time, but has been left over from year to year, as I was in doubt 

 whether the difi'erences observed were of any real value. As, however, I 

 have not been able to find any described species to which this form could 

 be assigned, I have described it here under a distinct name. 



This form belongs to a group of Cletodes which are all closely related to 

 each other, and exhibit this relationship by the similarity in the structure 

 of the antennules and of the first pair of thoracic feet, but especially in 

 the structure and armature of the female fifth pair; and perhaps the most 

 typical species of the group is the Cletodes limicola of G. S. Brady. In 

 this group the antennules are usually composed of five joints, the penulti- 

 mate one being very small ; in the first pair of thoracic feet both branches 

 are short, but the inner rather shorter than the outer ; the second joint of 

 the inner branches is also distinctly narrower and considerably longer than 

 the first joint. In the fifth pair the basal joint is small, and only slightly 

 produced interiorly — sometimes not at all — and provided with few, 

 usually two or three, setae. The secondary joints, on the other hand, are 

 elongated and narrow and usually furnished with five setae — two at the 

 apex, one on the lower part of the inner margin, and two widely separated 

 on the outer margin. The form just described, while agreeing in some of 

 its structural details with several members of this group, differs in one 

 point or another from them all, so far as they are at present known 

 to me. 



Cletodes propinqua, Brady and Robertson. 



1875. Cletodes propimjua, B. andR., Brit. Assoc. Report, p. 196. 



This curious little Harpactid occurred very sparingly in the same 

 Musselburgh gathering with the Laopliontodes just referred to. Its 

 bathymetrical distribution appears to extend from the littoral zone down 

 to moderately deep water. The furcal joints are short and pyriform, and 

 seem to be characteristic of the species. One or two other species of 

 Cletodes, including C. limicola, G. S. Brady,* and C. lata, T. Scott,t were 

 also obtained in the same gathering. 



* Nat. Hist. Trans. Northumh. and Durham, vol. iv., p. 438, pi. xxi., figs. 10-17 (1872). 

 t Tenth Annual Report of the Fishery Board for Scotland, Part III., p. 257, pi. x., 



figs. 10-18 (1892). 



