352 THE ZOOLOGIST. 
the presence of this supposed enemy.” I am pleased to say that I was able 
to secure one or two of these extraordinary parasites, which I have preserved 
in spirit. I was also much struck with the angular fin-like processes, one 
on either side of the body, near the tail, the use of which, I have an idea, 
might possibly be—acting on the principle of the feathers on the end of an 
arrow—to steady and direct the swift course of the fish when making its 
vigorous thrust. The specimen is, without doubt, an adult one, from the 
fact of its dorsal fin, although very high in front, being worn down to a level 
with the back unto near the end, when it rises again into a small fin. It 
was very amusing to hear the exhibitor, when describing this ‘‘ monster of 
the deep, or whale destroyer,” as he called it, inform the visitors that the 
animal, having no teeth, evidently lived by “suction,” at the same time 
saying how many mackerel, herrings, and pilchards he had taken from its 
stomach ; and that it was a young specimen, as a captain of a ship, who had - 
seen hundreds three times as large as the one exhibited, informed him that 
when full grown, “there were teeth all along the edges of the sword !”— 
of course meaning the sawfish. A few years since I saw a portion of the beak 
of a swordfish which had been driven clean through the side or bottom of a 
Plymouth trawler, where it broke off and remained, but still causing a leak. 
During the month of July many sunfish, Z'etraodon mola, made their 
appearance on the coast of Devon. An immense one was taken at Torquay, 
measuring some eight. feet “from fin to fin”—as it was described—and 
about five feet long. I also examined one, of smaller dimensions, that was 
captured off Cawsand Bay, near Plymouth, on the 17th, and was much 
struck with the prominent brow, or frontal bone, which became apparent 
when the flesh began to shrink, after being a day or two out of the water, 
considerably altering the profile and form of the face. Blue Sharks were also 
plentiful on our coasts about the same time, and several were captured. 
Their appearance no doubt was attributable to the abundance of mackerel 
and other fish in the neighbourhood at the time.—JoHN GatcoMBE 
(55, Lower Durnford Street, Stonehouse). 
Cornish CrustaceEa.—In the course of the last five days (second week 
of August) I have procured the following species, mostly from the deep sea, 
at Prussia Cove, Marazion:— Wrinkled Swimming Crab, P. corrugatus, 
very small, not half an inch across the carapace; Long-armed Munida, 
M. Rondeletii ; Andrews’ Galathea, G. Andrewsii; Long-horned Porcelain 
Crab, P. longicornis ; Long-legged Spider Crab, Stenorhynchus longirostris ; 
a Common Spider Crab, Maia squinada, half the adult size, but covered all 
over the back with a growth of some small, thick and long sea-weed or 
semicoralline substance, just as Gibbs’ Spider Crab usually is. Besides 
these there were, of course, the crabs common to the place.—THomas 
Cornisy (Penzance). 
