Pseudotiron, Calliopiidac 285 



in guatbopod 1 half as long as 5t'\ in gnathopod 2 -/^ as long as 5*^, 

 finger rather long, nearly straight. Uropod 2 the smallest. Uropods 1 and 2, 

 the inner ramus the shorter (Chevreux, but?). üropod 3, outer ramus armed 

 with 3 rows of spinules, inner with a row of setules. Telson, apices subacute, in 

 ligure a little divergent Colour pellucid. L. Q 5 mm. 



Mediterranean (North of Tunis). Deptli 170 m. 



22. Farn. Calliopüdae 



1893 Calliopüdae, G. 0. Sars, Crust. Norway, v.l p. 431. 



Body compressed or with broadly vaulted peraeon, with or without 

 dorsal teeth. Head, rostrum unimportant. Side-plates small or of moderate 

 «ize. Antenna 1, peduucle usually short, accessory flagellum 1-jointed or 

 wanting. Upper lip rounded or faintly bilobed. Lower lip with inner lobes 

 small or wanting. Other mouth-parts varying little from the normal. 

 In Laothoes (p. 286), however, the palp of maxilla 1 is abnormally small, 

 and the outer plates of maxillipeds are abnormally large. In Sancho (p. 288), 

 and perhaps also in Paraleptaraphopus (p. 294), the gnathopods (Fig. 72, 73) 

 show striking sexual dififerences. Gnathopods 1 and 2 usually feeble, sub- 

 chelate. Marsupial plates large, broad. üropod 3. inner ramus much, or 

 more usually little, longer than outer. Telson entire, sometimes a little 

 notched or emarginate. 



Marine, generally distributed; rarely in woUs. 

 15 genera accepted, 1 imperfectly known, 29 accepted species, 8 obscure. 



Synopsis of accepted genera: 



I Lower lip without inner lobes — 2. 

 I Lower lip with inner lobes- — 8. 



Maxilla 1, palp very small: maxillipeds, 

 outer plates very large . ..... 



ixilla 1, palp not very small; maxilli- 

 peds, outer plates not very large — 3. 



, outer plates very large ...... 1. Gren. Laothoes [>. 286 



j Maxilla 1, palp not very small; maxilli- 



\ Back broadly vaulted — 4. 



1 Back not broadly vaulted — 6. 



I Antenna 1 without accessory flagellum; 



) telson notched 2. Gen. Chosroes p. 287 



I Antenna 1 with accessory flagellum; 

 ' telson not notched — 5. 



Maxillipeds, outer plates smaller than 



inner 3. Gen. Sancho p. 288 



I Maxillipeds, outer plates larger than 



' inner 4. Gen. Amphithopsis . . . p. 289 



j Body with sorae Segments dorsallydentate 5. Gen. Halirages p. 290 



\ Body without dorsally dentate segments — 7. 



Antenna 1 without accessory flagellum; 



uropod 3, rami uuequal 6. Gen. Xieptamphopus . . . p. 293 



(Antenna 1 with accessory flagellum ; 

 uropod 3, rami equal 7. Gen. Paraleptamphopus . p. 294 



) Telson at apex smoothly rounded — 9. 

 ) Telson at apex acute or notched — 10. 



