179 



antennular peduncle : there is no spine at the outer angle of the basal joint of the 

 peduncle. 



The slender antennal scale is decidedly shorter than the vertically-com- 

 pressed antennal peduncle. 



The eyes are borne on short eyestalks which are immovably fixed, in the 

 transverse axis of the carapace, in shallow fossae lying beneath the anterior 

 border of the carapace. 



The 1st pair of thoracic legs are much longer than the body : the lower 

 border of the merus and of the fixed finger, the upper border of the carpus, and 

 both borders of the palm are sjjinose, and the opposed border of the fixed finger 

 has a large spiniform tooth near its distal end : the upper border of the merus 

 and palm, and both borders of the carpus, have a spine or tooth at the distal 

 end : the club-shaped carpus is about twice as long as the palm, and the palm is 

 a little shorter than the fingers. All the other thoracic legs are short. 



Colour in life either pale pink or milk-white. 



In the largest specimen the length of the carapace is 54 millim., of the 

 abdomen 71 millim., measured in the middle line. 



From the Bay of Bengal, 1310, 1439, 1748 and 1803 fathoms. 



This species seems to come nearest to Willemossia inornata Faxon. From 

 the peculiar delicacy of its tissues, and also from the fact that on one occasion a 

 specimen was brought up in a trawl that we believed to have not touched 

 bottom, I am of opinion that it belongs to the Nectic fauna. 



n j w 68Jl,m ij , i -x 6012-6014 6870 



Regd. No. — (Type of the species) : — ^ — : — . 

 Family Scyllarldce, White. 



Dana, Proe. Ac Nat. Sci. Philad. 1852, p. 14, and U. S. Expl. Exp. Crust, pt. I., p 516: Spence Bate, Chal- 

 lenger Crust. Macrura, p. 57 : Stebbing, Hist. Crust., p. 191 : Ortmann in Bronn's Thier Reich (Jtalacostraeal, 

 p. 1137. 



Carapace strongly depressed, with well defined lateral borders and with the 

 rostrum absent or represented only by a tooth : anteriorly it is soldered to the 

 epistome on either side, posteriorly its angles are firmly held between the last 

 thoracic epimeron and the 1st abdominal somite. Thoracic sternum broad. 



Abdomen broad, the terga overlapping, the pleura behind the 1st well 

 developed : telson quadrate, its posterior portion, like the greater part of the 

 caudal swimmerets is coriaceous or membranous. 



The eyes are lodged in perfect orbits, excavated either in the dorsum or in 

 the lateral border of the carapace. 



Antennular peduncle elongate, weak, with cylindrical joints : the flagella 

 short. 



