305 



Carapacc, rustnuii iiicludod, 12,5 luiii. long, abdurnoii 35 mm., 

 entire lengtli 47,5 mm. Carapacc ot' a stout shape, greatcst width, 

 7,5 mm., as large as the grcatest height, carapacc about one and 

 a half' as long as broad. Rostrum acute, 3,5 mm, long, reaching 

 slightly beyond basal antennular articlc, with the tip curved 

 upward and with a slonder spine at cither side of the base. Mid- 

 dorsal linCj of carapace with two large, compressed, acute spines, 

 the anterior or gastric not far behind the rostrum, the other near 

 the posterior margin. Carapace at either side with two rather little 

 prominent koels, the upper uuarmed, the lower with two spines, 

 situated close to and immediately behind one another, anterior 

 spine nearly 3-times as long as the posterior and reaching just 

 beyond the gastric spine. 



Tergum of 3rd abdominal somite produced posteriorly to a 

 distinctly compressed carina or gibbosity, the upper border of 

 which is arched both longitudinally and transversely. The othpr 

 somites are not carinated. Sixtl^i somite as long as 4th, 5th hardly 

 shorter than 4th, 4th moasuring in the niiddlo line two-thirds of 

 the 3rd. Abdominal pleura smooth, unarmed, much resembling 

 those of Crangon vulgaris, with the anterior and posterior margins 

 rounded or obtuse. Telson 8,5 mm. long, a little more than one 

 and a half as long as Gth somite, with 2 pairs of minute dorso- 

 lateral spinules and 2 short spines at either side of the pointed apex. 



Antennular peduncle reaching until the middle third part of 

 the antennal scale, 2nd joint hardly longer than broad, 3rd half 

 as long as 2nd ; stylocerite acuminate, reaching to far end of 

 basal article. 



Antennal scale three-fifths the length of the carapace and 3,7- 

 times as long as broad in the middle. 



Merus of anterior legs strongly compressed laterally, upper 

 margin with a spine at distal extremity, lower sharply carinated 

 to a little beyond the middle, the carina lamelliform with small, 

 sharp tooth at the far end. Chela, dactylus excluded, 3-times as 

 long as broad in the middle. 



Peraeopods of 2nd pair hardly reaching to the middle of the 

 merus of Ist, dactylus measuring one-third the length of the 



