ISOPODA. 53 



Metjvsoino with one ilistinct .sct^moiit spinose and ii lnillious uiosonio witli miiiutf 

 protorminal luopoda. 



Pereiopoda aiiil)ulatoiy, except the hrsl, wiiich is prehensile. 



Pleopoda, fii*st pair forming an operculum over the remainder. 



This genus is estid)lishcd for two closely allied species whieh cannot be located in 

 any existing genera. It is unquestionably a member of the family .Faiiiridte and its 

 nearest relations would appear to be the genera folaiithe Bcddard, and Inh ll,i Hicliardsdn. 



C0ULMANNI.\ AUSTUALIS. 



(Plate TX., tig. 2.) 

 S|xrilii' clmnictcrs : — 



Firet sej^inent of iiiesosoinc with cpiniera ck'ft to I'orm two l)liule-like processes. 

 Uiosomc pointe<l. . 



The body is 5 mm. long, vaulted with the elongated, though not separable, 

 epimera of the mesosome divided by a deep and wide cleft so as to produce them as 

 narrow blades. Each of these segments as well as the first of the metasome bears a 

 slight ridge produced in the mid-dorsal line into a stout backwardly curved spine. 

 The entire body is covered, but not thickly, with fine setae. 



The ccphalosome is a little longer than the first segment of the mesosome, 

 niunded in front and having, near the posterolateral angle, a slender finger-like 

 process which carries a small eye. The posterior margin is very nearly straight. 



The first four .segments of the me-sosome are subcqual in length, the third is the 

 widest, and the epimeral blades of this and the succeeding are sul)e(|nal in size, those 

 of the first two segments graduate from the first to the fourth. Tlie mid-dor.sal 

 .spines are well in front of the posterior border of their respective segments. The last 

 three segments are more or less curved backwards, particidarly the last, though in the 

 last segment it would be more correct to say angulated. Their dorsal spines are on 

 the posterior border of their segments. The first and only distinct segment of the 

 meta.some is rjuite small and wedged in the curvature of the preceding one. Its 

 mid-dorsal spine, though not so large, is quite as prominent as any of the others. 

 The uro.some is smooth, finely setose and peg-top shaped. 



The uropoda are quite small, single jointed finger-like processes with a few 

 distal setae. They lie at five-eighths of the length of the uro.some. 



The first antenna arises just in front of the eyestalk. The peduncle consists of 

 two small joints, and seen from the dorsum the.se are subequal in length, though the 

 first is very much stouter than the .second. The multi-articulate fiagellum is twice the 

 length of the peduncle, and is composed of joints of very variable length and almost 

 devoid of setae. 



The second antenna is longer, and has a peduncle of six jcjiiits. The first two are 

 extremely short; the third is longer than the two fir.st together, swollen externally and 

 8et<ise ; the fourth is short, forming a sort of elbow in the appendage ; the other two 



