48 



Mandibles without dental process. Maxillae I have a one-segmented 

 palp; an inner lobe is present. The lobes of maxillae II are narrow, some- 

 times fused. The outer lobes of the maxillipeds lack a palp; the inner 

 lobes are usually separate or not completely fused; in the latter case, a 

 suture separating them into two symmetric halves is present (except in 

 family Scinidae). The first two pairs of pereopods are weak and simple 

 (very rarely, pereopods I chelate). The 2nd article of all pereopods lacks 

 lobate outgrowths. Pereopods III-VII (often V-VII) in som^e groups with 

 retractile claws. Pereopods VII almost always with all articles and only 

 rarely lose the claw. 



The infraorder Physosomata includes seven families: Archaeoscini- 

 dae, Lanceolidae, Chuneolidae, Microphasmidae, Mimonectidae, Prosci- 

 nidae, and Scinidae. 



SUPERFAMILY ARCHAEOSCINOIDEA 

 BARNARD, 1930, NOM. NOV, 



The pereon does not bulge in males. Antennae I are short in both sexes, 

 not longer than the first two-three somites of the pereon. The cutting 

 edge qf the mandibles is narrow; the mandibular palp is thin, its 3rd 

 segment longer than the 1st and 2nd segments together. 



I. Family ARCHAEOSCEVroAE Barnard, 1930 



Small animals, less than 10 mm long*, with sexual dimorphism distinct 

 in body shape. The head in females is shorter and lower than somite I 

 of the pereon, in males much above the pereon and nearly equal to it in 

 length. The eyes are very small or absent. The structure of antennae II 

 differs notably in males and females. 



The mandibles taper sharply in the distal part, have a narrow cutting 

 edge, are devoid of accessory plate, and have a thin palp. Maxillae I 

 have a developed palp. The lobes of maxillae II are unequal in size. The 

 outer lobes of the maxillipeds are oval and very slightly armed; the inner 

 lobes are small and slightly separated in the distal part. The coxal plates 

 are ifree, the 5 th article of pereopods I is almost not enlarged distally; the 

 claw is attached subapically. The claws of pereopods I-IV are free, those 

 on V-VII may be retractile (genus Paralanceola). The uropods have long 

 free rami. The telson is shorter than the basipodites of uropods III. 



Woltereck (1909) separated the family Pygmaeidae, including in it 

 the genera Archaeoscina Stab., Micromimonectes Wolt., Mimonecteola 

 Wolt., and Microphasma Wolt. In doing so, he pointed out that these gen- 

 era were combined by him in one family only provisionally and, possibly. 



Changed from "cm" in Russian text by authors — ^Eds. 



