very small, with the inner expansion of proximal joint not extending beyond the 

 middle of the distal joint and armed with '2 spiniform seta? only. 



Colour whitish. 



Length of adult female ().(;."> nun. 



!! murk*. This form, recently described hy Prof. Lilljeborg. is nearly 

 allied to .!. fit/iiiim-ii. hut of larger si/e. and moreover differs in the shape of 

 the caudal rami, as also in the structure of some of the appendages. 



On-urn i/re. Only a few specimens of this form have hitherto come under 

 my notice. They were taken many years ago from a shallow swamp in eastern 

 Kinmark. at some distance from Yardo. 



Di*trH>ntiii)i. Northern part of .Sweden (Lilljehorg). 



129. Attheyella Duthiei, Scott. 



(PI. CXXXIII). 



.\flln i/i'Uii Ihitli'ni, Si-..tt. (in some iif\\ ami rare British Copi-poda. Ann. Mg. Nat. HUt. S.T. fi. 



Vol. XVIII, p. 4, I'l. II, ligs. 1 18. 



s\n: Canthocamptus Inilhiri, Lilijrborg. 



. Body moderately slender, slightly tapering 

 hehind. Cephalic segment comparatively large and produced in front to a rather 

 prominent rostral projection obtusely rounded at the tip. Caudal segments fringed 

 at the hind edge ventrally and laterally with small spinules; last segment shorter 

 than the preceding one, anal opercle small, somewhat angular in the middle, and 

 perfectly smooth. Caudal rami comparatively large and thick, slightly divergent 

 and somewhat tapered distally, dorsal face exhibiting a slight carina terminating 

 in a knob-like prominence outside which the dorsal seta issues; seta; of the outer 

 ed-je very slender and elongated, the distal one remote from the apex. Anterior 

 antennae of moderate length, and gradually attenuated distally, terminal part not 

 attaining the length of the proximal one. Posterior antenna- with the outer ramu^ 

 uniarticuhiti-. 1 st pair of legs with the outer ramus a little shorter than the 

 inner, middle joint wanting the usual seta inside: inner ramus Inarticulate, with 

 the distal joint fully as long as the proximal one. but much narrower and pro- 

 vided inside, in about the middle, with a sh-nder seta not found in the other species. 

 Nataion le^s moderately strong, with the proximal joint of the inner ramus more 

 fully developed than in the other species: outer ramus of 2nd pair of legs with- 

 out any seta- inside. La>t pair of le^> with the distal joint rather large and oval 

 in form, being finely ciliated inside, inner expansion of proximal joint narrow 



