Syniipiidae, Synopia 271 



rather long. Upper lip bilobed. Mandible normal, but 2*^ Joint of palp large, 

 3'^ minute. Maxilla 1, inner plate witli scveral setae, outer witli 8 spines, 

 2^ Joint of palp witli spine-teetli ou apex. Maxilla 2, inner plate broader 

 than outer, fringed on inner margin. Maxillipeds strongly setose, inner plates 

 rather short, rounded at apex, outer long, narrow, 4^^ Joint of palp very 

 small. Gnathopod 1 scarcely subchelate (Fig. 68), gnathopod 2 simple 

 (Fig. 69). Peraeopods 1 and 2 with 4*'^ and 5*'^ joints dilated. Peraeo- 

 pods 3 — 5, 2*^ Joint expanded. Uropods 1 and 2, outer ramus sliorter than 

 inner, uropod 3 reaching furthest back, outer ramus the longer, 2-jointed. 

 Telson cleft. 



Marine. 



1 genus, 2 species accejjted, 3 doubtful. 



1. Gen. Synopia Dana 



1852 Synopia, J.D.Dana in: Amer. J. Sei., ser. 2 ».14 p. 315 | 1853 S., J. D. 

 Dana in: U. S. expl. Exp., v.l3u p. 991 | 1871 S., Claus in: Xachr. Ges. Götting., p. 157 \ 

 1886 S., Bovallius in: N. Acta Soc. Upsal., ser. 3 u 13 nr. 9 p. 4 ; 1888 S., T. Stobbing 

 in: Rep. Voy. Challenger, u29 p. 799 \ 1893 S., A. DellaValle in: F. Fl. Neapel, v. 20 p. 850. 



With the character of family. 

 2 species accepted, 3 doubtful. 



Synopsis of accepted species: 



Telson soraewhat triangulär 1. S. ultramarina . p. 271 



Telson oval 2. S. sehöeleana . . p. 272 



1. S. Ultramarina Dana 1853 & 55 S. u. -\- S. gracilis, J.D.Dana in: U.S. 

 expl. Exp.. u 13ii p. 995; t. 68 f. 6 a— h, 7 a— o j 1862 S.u., Bäte, Cat. Amphip. Brit. 

 Mus., p. 341 t. 54 f. 1 j 1886 S.u., Bovallius in: ' N. Acta Soc. üpsal., ser. 3 4;. 13 nr. 9 

 p.6 t. 1 j 1893 S. II. (part.), A. DellaValle in: F. Fl. Neapel, u20 p. 851. 



Body and front of head sharp-edged, peraeon segments 1 — 7 short, 

 pleon Segments 1 — 3 long and large. Front of head at right angles to 

 dorsal line. Side-plates 1 and 2 small, slightly bent forward, '6^ far larger, 

 quadrangular, emarginate behind, 4*^^ not large, triangulär, with the longest 

 side arcuate, 5*1^— 7*1^ small; pleon segments 1 — 3, postero-lateral corners 

 subquadrate. Eye seeraingly variable, round or oval, especially perhaps in Q , 

 the little lateral eyes having 3 or 4 lenses, colour coutinuing dark in spirit. 

 Antenna 1, flagellum in 9 with 5 joints, in ö with 10 — 14, in both 1^* long, 

 tapering, more or less fringed, accessory flagellum 2- (Dana: faintly 3-)jointed, 

 a little longer or shorter than 1^* of primary, the terminal Joint minute. 

 Antenna 2, ultimate Joint of peduncle much shorter than penultimate, flagellum 

 in Q with 12 — 14 joints, in d with 18. Triturating lobes of stomach fringed 

 with very slender spines. Gnathopod 1, 2*^ Joint rather widened distally, 

 5*^ Joint large and long, narrow at the extremities, fringed on bind margin 

 with long plumose spines or setae, 6*^ very -much smaller, broadly ovate, 

 fringed on part answering to palm with plumose spines or setae, finger 

 uearly as long as 6^^ Joint, slender, slightly curved, scarcely intended to 

 close against any palm margin, since the equivalent of the palm is clothed 

 as above mentioned. Gnathopod 2 much more slender, 5*^ Joint long and 

 narrow. 6*^ also narrow, more than half as long, both fringed on bind margin 



