186 MR T. V. HODGSON ON THE 



right femur of the last pair bear peculiar excrescences, obviously the result of some injury. 

 In both cases, however, the injured joint is longer than its fellow on the opposite side. 



A single specimen, which carries a few individuals of Scalpellum, was taken at the 

 South Orkneys in June 1903. 



Colossendeis leptorhynchus. 

 Colossendeis leptorhynchus, Hoek, (15), pp. 64-65. 



A specimen referable to this species was taken in lat. 48° 6'S., long. 10° 5' W., in 

 1742 fathoms. It differs slightly from the type specimens taken by H.M.S. Challenger, 

 and is much larger than any from that expedition. With its legs straightened out 

 it covers an area of very nearly 1 4 inches. Its length is as follows : — Proboscis, 

 39 "5 mm. ; trunk, 13 '5 mm. ; abdomen, 5 mm. ; total, 58 mm. 



The Body is perfectly smooth, but traces of segmentation may be seen under a good 

 lens. It is not stoutly built, and the small lateral processes are separated by an interval 

 equal to about half their thickness. 



The Cephalon is marked off from the rest of the trunk by a V-shaped groove which 

 cuts into the space between the first pair of lateral processes. The ocular tubercle is 

 immediately in front of this groove, and occupies rather a large area ; it is of very small 

 elevation and bears two poorly developed eyes. 



The Proboscis is very long and slender, slightly enlarged in the middle, exactly 

 as described by Dr Hoek ; but it is movably articulated to . the trunk as in the type 

 and all other species of the genus that I have seen, twenty-three in number. 



The Palps arise ventro-laterally as close as possible to the proboscis, beyond which 

 they do not extend far, the sixth joint not reaching the extremity. The first two joints 

 are very small, the proportions of the remainder being 14, 2, 20, 2*5, 2 "3. The three 

 terminals are together not as long as the preceding joint ; the first two are subequal, 

 and the last a little longer, but not as long as the two together. The entire organ is 

 very finely setose throughout. 



The Ovigers rise ventrally close together, each on a small body-process which is 

 close behind the proboscis. They are very long ; the first three joints are as usual very 

 small, the middle one of these being much more slender than the other two. The 

 proportions of the three following are as 23, 4, 26. The four terminal joints are small 

 and form the characteristic loop, and are provided with groups of denticulate spines, 

 the last joint bearing a strong claw. A lateral line is readily seen along the entire 

 appendage. There are not less than seven rows of these denticulate spines ; those of 

 the first and principal row are the longest and best suited for observation. Here they 

 are less numerous than in the other rows. They are roughly cylindrical shafts, becom- 

 ing, at about half their length, flattened ovoid blades. The margin of the flattened 

 blade is, near the base, provided with very small and rather curved teeth. These 

 become longer and closer set, and before the extremity of the blade is reached they 



