BELONGING TO THE GENERA BRADTA AND ECTINOSOMA. 431 



are fvimished Avitli many small seta^ arranged in straight or curved rows, as shown 

 in the figure (PI. 38. fig. 35). Caudal stylets short, apparently 2-jointed, and equal 

 in length to the last abdominal segment (PI. 38. fig. 44). Colour chocolate-brown. 



Habitat. Firth of Forth, off Burntisland ; Cromarty Firth, near the mouth of the 

 River Alness; iu the stomachs of young dabs from Blackpool, Lancashire; head of West 

 Loch Tarbert, Argyleshire. 



jRemarks. This species resembles Bradya minor in having an eye-like pigment-spot at 

 the base of each antennule, and may therefore be mistaken for it unless some care is 

 taken and dissections made. It is, however, quite distinct from that species, as a com- 

 parison of the parts will show. Ectinosoma curticorne appears to form a source of food 

 for the young dabs {Pleuronectes Umaiula) on the Blackpool closed fishing-grounds : as 

 many as sixteen sj)ecimens were counted in one stomach. 



The difference between Bradya Edicardsi, Eichard, and Ectiiiosoma curticorne, Boeck, 

 is, so far as we can make out, scarcely sufficient to warrant us in separating them. 



EcTiNOSOMA ERYTHROPS, Brady (1880). (PI. 36. figs. 24, 31, 30 ; PL 37. figs. 14, 

 18, 37, 42; PL 38. figs. 13, 15, 39, 48.) 



1880. Ectlnosoma erijthrops, Brady (3), vol. ii. p. 12, pi. xx.Kvi. figs. 11-17'. 



1890. Ectinosoma erythrops, Scott (13), p. 318. 



1893. Ectinosoma erythrops, I. C. Thompson (16), p. 192, pi. xviii. fig. 8 c, d). 



Description. Length -73 mm. (-^^ of an inch). Body slender fusiform; rostrum 

 moderately prominent, incurved (PL 36. fig. 24). Antennules short, setiferous, gradually 

 tapering to the slender extremity, 5- (?or 6-) jointed; the last joint is long and narrow 

 and appears to be composed of two coalesced joints ; the proportional lengths of the joints 

 are nearly as shown in the formula : — 



No. of the joiuts : 1.2.3.4. 5 



Proportional lengths : 11 6 11 5 (7 7) ' 



Antenmx; elongate, the last joint sparingly setiferous ; the secondary branch, which does 

 not extend much beyond the end of the second joint of the primary branch, has the first 

 two joints very small, while the last is long and slender (PL 37. fig. 14). 



Mandibles rather smaller, and with the palp more elongate than the same appendages 

 in Ectinosoma Sarsi (PL 37. fig. 18). 



Anterior foot-jaws are also somewhat similar to those of that species, but the last joint 

 is more elongate, and the terminal claws arc also proportionally longer (PL 37. fig, 37). 

 Posterior foot-jaws small and slender (PL 37. fig. 42). 



The first four pairs of swimming-feet are considerably longer than those of Ectinosoma 

 Sarsi ; the inner marginal setae on both branches are plain and more slender than those 

 of that species, and the terminal spines are also more elongate ; the second joint of the 

 inner branches has the outer distal angle produced into a long spine-like process, that 

 extends downward in front of the upper half of the thii'd joint (PL 38. figs. 13 and 15). 

 The inner portion of the basal joint of the fifth pair is not much produced ; the 



