38 THE VOYAGE OF H.M.S. CHALLENGEE. 



The uropoda {ibid.) are much shorter than the telson, and have a somewhat similar 

 form to those in Gnathopliausia ingens. 



Habitat.— Oi the two specimens obtained by the Challenger Expedition, the larger 

 was taken, along with the above described specimen of Gnathopliausia ingens, in the 



Arafura Sea. 



Station 191, September 23, 1874; lat. 5^ 41' S., long. 134' 4' 30" E.; depth, 

 800 fathoms; green mud; bottom temperature, 39°-5. 



Tlie other specimen was obtained in the vicinity of the Talaur Islands, south of 

 Mindanao (Philippines). 



Station 214, February 10, 1875; lat. 4° 33' N., long. 127° 6' E. ; depth, 500 fathoms; 

 blue mud; bottom temperature, 4l"-8. 



Hence the geographical distribution of this species, so far as is at present known, 

 ranoes within the seas of the East Indian Archipelago. 



Section 2. — Infero-posterior corners of carapace rounded off. Dorsal spine produced. 

 Dorsal keel uninterrupted in the middle. Supra-orbital spines distinctly defined from the 

 rostral part of carapace, and rather large. Antennal scale of the form usually met with 

 in the Caridea, jointed at the extremity, outer edge jutting out anteriorly as a more or 

 less produced spine. Maxillipeds without any trace of exopodites. Epimeral spines of 

 last caudal segment not confluent on the ventral face. 



6. Gnathophausia ivillemoesii, G. 0. Sars (PI. V. figs. 1-6). 



Gnathopliausia zoea, var., Suhm MS. 



Gnathophauda lolllemoosii, G. 0. Sars, Preliminary Notices on the Challenger ScMzopoda, 

 No. 6. 



Specific Characters. — Form of body rather robust. Carapace covering whole of trunk, 

 with the dorsal spine comparatively short, projecting only a little l^eyond the first caudal 

 seo-ment. Rostrum shorter than carapace, very narrow, and provided with small denticles 

 comparatively few in numljer. Supra-orbital spines very strong, anteriorly curved ; antennal 

 spines distinct; branchiostegal spines obsolete. Five anterior caudal segments keeled 

 above, and produced posteriorly into short but distinct dorsal processes ; posterior lappet 

 of epimera lanceolate. Eyes pyriform. Antennal scale rather large, only twice as long 

 as broad, terminal lobe but slightly projecting beyond the spine of the outer corner. 

 Telson linguiform, lateral margins evenly curved and densely spinulous; apical spines 

 rather short, serrate at the posterior margin. Uropoda somewhat shorter than telson. 

 Length 136 mm. 



Remarks. — In his manuscript notes the late Dr. v. Willemoes-Suhm has recorded. 



