Paramicruropus, Parapherusa 383 



Head and all the segments dorsally granulär, on each segment immediately 

 above the side-plates a strongly developed carina, and encircling the back of 

 each segment a broad, rib-like, granulär, transverse prominence; on pleon 

 segment 4 the prominence is divided by a deep longitudinal furrow; segments 5 

 and 6 very small, in the Q so overarched by segment 4 as to be invisible in a 

 side view, in the d more conspicuous. Head with rather long pointed rostrum, 

 lateral lobes produced into an acute process as long as rostrum. Side- 

 plates 1 — 4.setose. Eyes point-like, black. Antenua 1 scarcely 7* as long 

 as body, but much longer than antenna 2, 1^* Joint stout, flagellum shorter 

 than peduncle, 12-jointed, accessory flagellum 1-jointed. Antenna 2, flagellum 

 6-jointed. Gnathopod 1, 6*^ Joint oval, naiTowing to finger hinge. Guathopod2 

 not larger, oblong, in cS widening a little to the not very oblique palm. Peraeo- 

 pod 5, 2^ Joint broader below than above, with long setae on both margins. 

 Uropods 1 and 2 moderately long (not so long as in figure), reaching beyond 

 the rudimentary uropod 3. Üropod 3, both rami very short, conical, with 1 long 

 apical seta, inner ramus in ö ^/j^, in Q ^s shorter than outer (figure e difficult 

 to reconcile with description). Telson broader than long, apical margin concave 

 or shallowly emarginate. Colour wax-yellow. L. 10 mm. 



Lake Baikal. Depth 10 — 50 m. 



10. Gen. Parapherusa Stebb.*) 



1879 Harmonia (Sp. un. : H. crassipes), Harmomia (laps.) (non Harmonia E. 

 Mulsant 1846, Coleoptera!), Haswell in: P. Linn. Soc. N. S. Wales, vA p. 330 | 1883 

 Harmonia, Chilton in: Tr. N. Zealand Inst., u 15 p. 82 | 1880 Chloris (non Moehring 

 1758, Aves!), Haswell in: Ann. nat. Hist., ser. 5 v.5 p. 33. 



Side-plates shallow. Antenna 1 the shorter, accessory flagellum well 

 developed. Mouth-parts normal. Mandible, 2^ Joint of palp as long as 3^, 

 but stouter. Maxiila 1, inner plate with about 10 long setae, outer with 

 11 spines, 2"^ Joint of palp with 7 or 8 spine-teeth. Maxiila 2, inner plate 

 fringed on inner margin. Maxillipeds, inner and outer plates well armed. 

 Gnathopods 1 and 2 subchelate, 2^ much the larger in ö, but not in o. 

 Peraeopods 3 — 5 very stout. Uropod 3 very short, rami equal, shorter than 

 peduncle. Telson simple. 



1 species. 



1. P. crassipes (Hasw.) 1879 Harmonia c, Harmomia c, Haswelji in: P. Linn. 

 Soc. N. S.Wales, vA p.330, 349; 1. 19 f.3 | 18SS'Harmonia c, Chilton in: Tr. N. Zealand 

 Inst., V. 15 p. 82 t. 2 f. 5 a, h I 1893 Protomedeia? c, A. DellaValle in: F. Fl. Neapel, 

 v/20 p.442 ] 1880 Chloris, Haswell in: Ann. nat. Hist., ser. 5 v.5 p. 33. 



Pleon segments 5 and 6 very short. Head, lateral lobes rounded, little 

 produced. Eyes well developed. Antenna 1 scarcely shorter than antenna 2, half 

 as long as body, 2*^ Joint scarcely longer than P*, 3^ shoii, flagellum rather longer 

 than peduncle, about 18-jointed, accessory flagellum 8-jointed. Antenna 2, ultimate 

 and penultimate joints of peduncle equal, flagellum much shorter than peduncle, 

 about 10-jointed. Gnathopod 1, 6*^ Joint rather longer than 5*^, oval, palm 

 ill-defined. Gnathopod 2 in c?, 5**^ Joint short, cup-shaped, 6**^ very large, 

 widening to the well-defined, suboblique, undulating palm, which has a Square 

 spinuliferous prominence adjacent to finger hinge and a similar but more 

 convex one near the middle, finger strong, matching palm. Gnathopod 2 



*) Nom. nov. TTapd, beside, Pherusa (see p. 449). — The name Harmonia is 

 preoccupied (1846, E. Mulsant, Hist. nat. Col. France, Securipalpes p. 108), also the 

 name Chloris (1758, P. H. G. Moehring. Gesl. Vog., p. 3, 24). 



