70 THE VOYAGE OF H.M.S. CHALLENGER. 



" Comiger. Hands without fangs : proboscis incurved subulate : sides of the thorax with a 

 double horn. 

 Inhabits the Norway Seas. 



Body of 11 short segments, whitish edged with red, the 5 hind ones carinate and spinous 

 on the back : under the thorax each side are 2 horns united at the base : tail with 

 numerous bifid styles. 

 " * Linearis. Hands 4 with a single fang : legs 10. 



Pall. Spicil. Zool. 9. tah. 4. fig. 15, Baster. tab. 4. fig. 2. 

 Inhabits the shores of Europe and America. 

 "* Atomos. Hands 4 with a single fang : legs 14, with two oval vesicles each side between 

 the fourth and fifth pair. 

 Pennant Brit. Zool. iv. tah. \2. fi^. 22. 



Inhabits Europe, in running water, and is so very minute as to be seldom visible to the 

 naked eye. 

 " * Salinus. Legs 20 spreading : tail subulate," &c. (not an Ampbipod). 

 " * Stagnalis. Hands without fangs : legs 22 : tail cylindrical bifid," &c. (not an Ampbipod). 

 " Gibbosus. Oblong, gibbous ; antennae folded and very long. 

 Inhabits Pc<rt?(^aZ ; small 



Body smooth yellowish speckled with brown : head thick obtuse with a large green 

 spot : antennse bent under the body, folded and 3 times as long as the body : tail 

 with 3 sharp cleft leaves. 

 " Ssca. Hands without fangs : taO. jointed subulate and cleft at the tip," &c. (not an 



Ampbipod). 

 " Medusarum. Hands 4 with a single fang : head very obtuse. 

 Stroem, Sundm. 188. tah. I. fig. 12, 13. 

 Inhabits Norway, under Medusae. 

 " Filiformis. Linear; legs 10, the middle ones larger. 



Inhabits Melacea. Amoen. Acad. 6. p. 415. 7i. 99." 

 After "120. Monoculus " comes "121. Oniscds. Jaw truncate denticulate : Zip bifid : antennx 

 setaceous, 2-4: body oval, consisting of about 14 transverse segments : legs 14." 

 Under section " A. Feelers : antennx often 4, sessile: Cymothoa," are given among 

 many others : — 

 " Ceti. Ovate with distinct segments : third and foiu'th pair of legs linear and unarmed. 

 Seba. Mus. 1. tab. 20. fig. 5. Degeer. 7. t. 42. A 6, 7. 

 Inhabits the Northern Seas, on Whales." 

 " Aculeatus. Thorax naked : back with 3 rows of spines. 

 Act. Petrop. 1778, I. p. 247. tab. 8. fig. 1. 

 Inhabits the White Sea. Body carmine." 

 " Cuspidatus. Thorax articulate tuberculate : the 6 dorsal segments cuspidate. 

 Inhabits the White Sea. Act. Petrop. 1778. tab. 8. fig. 3. 

 Antennx 4 : tail tufted at the sides." 

 " Fuscus. Brown; shell carinate with a white spot on the thorax. 



Inhabits Denmark. II. Mull. Zool. Dan. 2476. 

 " Medusarum. A little compressed : front obtuse ; antennae very short and pendant : hands 4 

 compressed and cut. 

 Stroem. Sundm. \. p. 188. tab. 1. fig. 12, 13. 

 Found under the folds of the Medusa Capillata. 

 " Cicada. Compressed, sublinear with four spurious hands : upper antennae shorter : tail smooth 

 on the back. 

 Inhabits Greenland Seas. Fab. fit. Groen. p. 258. n. 233. 



