Curiously enough, the letter last mentioned did not at first reach Edward. It was re-posted by Mr. Bate, with the observation, “This has just come back to me as a returned letter, because Banff was unknown at the Post-office.”

PUZZLING SHRIMPS.

Mr. Norman also continued to furnish Edward with the names of his various Crustacea, though he could not name some of them. For instance, on the 13th May 1863, he wrote to Edward: “The shrimps you have sent completely puzzle me. I must wait for a time until I can solve the mystery. I believe that they all belong to one species, yet there are three, if not four, distinct forms. The general characters are so much the same, that I cannot think there are two species. . . . But the curious thing is, that I have not yet seen a single specimen of the species carrying eggs. I hope that you will yet find some, as it will be most interesting to clear up not only the question of sex, but also to find out the manner in which the eggs are carried. These forms are amongst the most interesting things I have seen for a long time, because it would almost seem as though we had a Crustacean with three phases, just as the bee has—male, female, and worker.” After giving a number of names, Mr. Norman proceeds: “And lastly, the parasite from the Common Gurnard is a species new to Britain.”

In his next letter Mr. Norman informs Edward that he is again going to Shetland on a dredging expedition with his friend Mr. Jeffreys. They are to go in a steamer, and “ought to do good work.” How Edward envied them—going dry-footed, well fed, well-clad, and in a steamer,—while he was working along shore, with no tools, but his hands and his bag-net.

ZOOLOGISTS IN ECSTASIES.

Mr. Norman returned from Shetland in July, and immediately recommenced his correspondence with Edward. “One of your shrimps,” he said, “is Caligus isonyx, new to our Fauna, and a very interesting one it is. The male is as yet unknown. I hope you may succeed in meeting with it.” Towards the end of the year Edward forwarded a number of species new to Britain,—amongst others Eurycercus hamellatus (obtained from the stomach of the perch), Chondracantha solex, Mysis mixta, and others. In one bottle of Crustaceans three new species were found. The zoologists were evidently in ecstasies. Mr. Norman exhibited the results of his researches at the next meeting of the British Association. In a letter, dated the 15th September 1863, he observed: “I enclose a list of fifteen Moray Firth Amphipoda, which you have found, and which are unknown to me. If you now, or at any future time, should be able to favour me with specimens of any of them, I shall be extremely obliged.” The specimens were afterwards sent to Mr. Norman.

On the 6th of February 1864 Mr. Bate wrote to Edward: “You will be glad to learn that your little specimen is Opis Essichtii, and that it has not been found previously in Britain. I have reconsidered the little Hyperia, and think that you are right; your remarks convince me that my first opinion was the more correct. You will therefore call it Hyperia Medusarum.”

THE SESSILE-EYED CRUSTACEA.

Mr. Bate was then publishing in parts his work on The Sessile-eyed Crustacea. He sent Edward the several parts as they appeared. About the beginning of 1855 Mr. Bate says: “You will soon get a new part of Crustacea, and then you will find that all my time and attention has been occupied with the Isopods. So do try and look out for some of these, and leave the Amphipods alone for a little while.”

And again: “Please never apologise for writing to me about Natural History. We have now been such long correspondents, that unless I hear from you now and then, I begin to fancy myself forgotten. Your letters always give me pleasure. The crustacean that you speak of is a Vibilia, the first taken in the British Islands. Please let me know its habitat, and as much of its habits as you can.”