272 



Synopia 



with long spines, fiuger small, witb a nail neaiiy as loug as the base. 

 Peraeopod 1, 2'^ Joint widened distally, 4*^ and 5**^ joints broad, subequal, 

 the 5*1* oval, fringed on bind margin, 6*'* sublinear, ratber sborter tban 5*^», 

 finger more tban half lengtb of 6*^, tbe base more tban twiee as long as tbe little 

 nail. Peraeopod 2 differing from peraeopod 1. 4*'' Joint broad, ratber cup- 

 like, mucb sborter tban tbe broadly oval densely fringed 5'^'*, 6^^ uarrowly 

 oval, about half as long and broad as 5^\ slightly al'med, finger as in 

 peraeopod 1. Peraeopods 3 and 4. 2* Joint a very broad oval, the bind 

 wing so transparent as easily to escape Observation, 6^^ Joint subequal in 

 lengtb to 2*^, longer than tbe other joints, finger long and straigbt. Peraeo- 

 pod 4 ratber longer tban peraeopods 3 or 5. Peraeopod 5, 2^ Joint witb 

 straigbt front, bind margin produced downward, forming a subangular lobe, 

 finger sborter than in peraeopods 3 and 4. Pleopods have 2 cleffc spines 

 on 1^* Joint of inner ramus. üropod 1 mucb longer than uropod 2, its 

 pediincle mucb longer tban peduncle of uropod 3, but its ranii sborter. 

 Telson reacbing distiuctly beyond peduncle of uropod 3; tiiangular, obliquely 

 truncated bebind, divided beyond tbe middle (Bovallius), or, triangulär with 

 a tendency to oval, cleft to tbe middle, tbe apices notched, witb tbe outer 

 tooth ratber more produced tban tbe inner. Colour rieb blue to hyaline, 

 tinted in parts with blue. L. 4—6 mm. 



Tropical Atlantic (lat. 4—12^^ S., long. 11—25*^ W.). 



2. S. seheeleana Bovall. 1886 S.S., Bovallius in: N. Acta Soc. IJpsal., ser. 3 

 V.13 nr. 9 p. 16 t. 2 f. 22— 29 | 1888 S.S., T. Stebbing in: Rep. Voy. Challenger, r. 29 

 p. 799 t. 52 I 1893 S. ultramarina (jp&rt.), A. DellaValle in: F. Fl. Neapel, v. 20 p.851. 



Very near to S. ultramarina (p. 271), but antenna 

 and telson differently shaped. Eye large, oval, sometimes 

 narrowly prolonged backward, about 30 lenses; lateral eyes 

 of 4 lenses. Antenna 1, flagellum in d witb 16 — 20 joints, 

 l^^long, closely fringed, accessory flagellum equal 

 to it or a little sborter, its 2*^ Joint minute, tipped 

 witb a setule. Antenna 2, flagellum 20-jointed. 

 üropod 2, outer ramus totally smooth along both 

 margius (Bovallius) or finely pectinate along 

 Upper margin (Stebbing), inner ramus witb 

 2 spines (Bovallius) or 1 spine (Stebbing) on 

 inner margin. Telson broadly ovate, reacbing 

 a little beyond peduncle of uropod 3, cleft 

 about to centre, sometimes beyond, sometimes 

 falling Short of it, apices rounded, slightly 

 notched, inner point equally advanced with outer or falling 

 Colour hyaline. L. 4 — 6 mm. 



Tropical Atlantic and Pacific. 



1 more elongate 



Fig. 08. 



S. seheeleana 



Gnathopod i. 



Fig. 69. 



S. seheeleana. 



Gnathopod 2. 



Short of it. 



S. angustifrons Dana 1853 & 55 S. a., .1. D. Dana in: U. S. expl. Exp., v. 13n 

 p. 998; t. 68 f. 8a— d ] 1886 S.a., Bovallius in: N. Acta Soc. Upsal., ser. 3 ».13 nr. 9 

 p. 20 t. 2 f. 36— 39 i 1893 S. ultramarina (part.), A. Della Valle in: F. Fl. Neapel, 

 V.20 p.851. 



Antenna 1 sliort, flagellum 5-jointed. Antenna 2, flagellum lO-jointed. L. 3 mm. 



Tropical Pacific (lat. 18» S., long. 122» W.). 



