280 TAGE SKOGSBERG 



Sub-genus Macrocypridina'-^ n. sub-gen. 



Cypridina (part.), a u t o r u in. 



Description: — Shell: — The form is somewhat, though only rather slightly, different in 

 the males and the females. — It is oval with a well developed posterior corner. The rostral 

 incisur is comparatively small, moderately deep and rather narrow. Near the inner edge of the 

 incisur there are two medial bristles situated close to each other. Presumably with com- 

 paratively weak calcification. The species belonging to this sub-genus are comparatively large. 



First antenna: — This is long, slender and eight- jointed. The sensory bristle of 

 the fifth joint has thirteen sensory filaments. The b- and c-bristles of the seventh joint have 

 a similar modification in the males as that described above p. 223 for the sub-genus Doloria. 

 The proximal filament of these two bristles, which is situated a short distance from the base 

 of the bristles, is, however, comparatively rather slightly metamorphosed; it is of moderate 

 strength, is onlv slightly swelled proximally and is not strongly chitinized and spine-shaped 

 distally, but more hyaline and ending in a short and very fine (sensory?) hair like most of the 

 filaments on the bristles of the two distal joints of this antenna. The f- and g-bristles of the 

 end joint are very much lengthened, being considerably longer than those of the females. 



Second antenna: — The protopodite has a medial-distal bristle. E x o- 

 p o d i t e: The bristle of the second joint is reduced. The natatory bristles of the third to the 

 ninth joints have no trace of spines. The third to the ninth joints have basal spines. The 

 endopodite is similar in the males and females, more or less strongly reduced, often with 

 a reduced number of joints. The distal (sensory?) bristle of the end joint is very long. 



Mandible: — Protopodite: The endite on the coxale is weakly bifurcated 

 distally; its spines are arranged in distinct groups, those situated medially and distally being 

 rather powerful. This joint has no bristles except for the small one on the endite, 

 Basale : Of the ventral bristles one d-bristle is very long and has numerous long secondary bristles 

 and short hairs distally, the rest are of moderate length or short and have short, fine hairs or 

 are bare. This joint has three dorsal bristles. Endopodite: The first joint has four bristles 

 ventrallv. The end joint has seven bristles, of which one of the anterior ones is long and powerful, 

 claw-shaped, the rest being relatively short. 



Maxilla: — Protopodite: Dorso-distally the coxale has a single bristle with 

 long, fine hairs. Proximally on the outside of the third endite there is a single bristle. On tlu> 

 boundary between the basale and the first endopodite joint there are three bristles, one close 

 to the exopodite, one at about the middle of the inside of the endopodite and one on the anterior 

 edge of the endopodite. Dorso-distally on the coxale there is a rather large lamelliform e jj i- 

 podial appendage. The exopodite is relatively well developed, has long, fine 

 hairs, situated close together, and is not displaced distally. The endopodite is relatively 

 short and very broad. 



■^ 11 is f>rol);ibly best iiol to use names oiiding with Ci/pris (c g. OiganUiciipris. I'l/roci/prif) for genera belonging 

 t(i ('iipri(linifori)ies. Thi^; siil'fix may be reserved tor real C y p r i d s. 



