70 VERMES. 



PLATE VIII. 



FIG. 1 . Gordius maximus, the Sea Long Worm ; adult. 



2. Anterior part of an adult, shewing the marginal cleft. 



3. Young specimen. 



4. Anterior portion of the same, shewing two black specks on the sur- 



face of the front, enlarged. 



5. The same specimen half a year after its delineation, as fig. 3. 



6. The same after having been kept twenty-two months from the first. 



7. Anterior portion, which, for preservation, had been severed from 



the body of a specimen, and subsequently regenerated the lower 

 extremity. 



8. Cluster of ova, enlarged. 



9. A few detached ova, enlarged. 

 10. Ova, of the natural size. 



PLATE IX. 



Fm. 1. Gordius maximus, intestine. 



C. GORDIUS T^NIA The Ribband Gordius. Plate X. Figs. 1, 2. 



Length sixteen inches or more ; breadth of the anterior above a 

 line. The head and sides of the anterior cleft ; mouth a slit below, very 

 conspicuous. Colour from dull reddish-brown to pale red ; belly paler. 

 A white stripe traverses the whole length of the back, which is divided 

 in the centre by a dark line, thus rendering the animal very like a rib- 

 band. Plate X. figs. I, 2. 



The colour of the back consists of five' lines, the two exterior stripes 

 being the broadest, having a white line within each, and the central dark 

 line between them. No specks or eyes have been discovered. The ex- 

 tremity of the anterior is white. 



This animal takes shelter in empty shells, or in the tubes of other 

 tenants of the deep, from which it may be dislodged by vitiating the 

 water. But it is the last of all that I have seen, which, yielding to the 

 offensive medium, quits its haunts. 



On June 1, a vast quantity of spawn, consisting of innumerable 

 minute spherical white ova, figs. 3, 4, amidst a thin glairy matter, ap- 



