166 ^ Mil. T. EDWAKD ON THE HYPE1U1D.E. 



16. In the Echeneidse. Oval and furcate, deeply grooved. 



17. In the Mursenidse. Oval (as in Conger and Anguilld) ; glo- 

 bular (as in Leptoeephalus) . 



18. In the Anguillidse. Elongate (as in Ammodytes). 



19. In the Syngnathidse. Grlobular. 



20. In the Grymuodontidae. Grlobular and very irregular (as in 

 Tetrodon). 



21. In the Sclerodermi. Irregular, posteriorly acuminate (as in 

 JBalistes). 



Stray Notes on some of the smaller Crustaceans. Note II. On 



the Habits, &c. of the Syperiidod. By Thomas Edwaed, A.L.S. 

 [Eead December 6, 1866.] 

 As intimated in my last, I would now speak more fully of the other 

 three species alluded to, viz. S. ohlivia, medusarum, and mi7iuf a. 



Although I have, as already stated, occasionally taken both the 

 others from the Medusa, I have never as yet met with, nor seen, 

 even so much as a single specimen of either of these attached to 

 anytliing. And of the first {H. ohlivia) which seems to me to be 

 the most abundant of the whole tribe, at least in this quarter, I 

 have seen thousands, nay, millions, or countless hordes. So nume- 

 rous are they occasionally, that I have seen the water to a certain 

 extent darkened by them ; and this was the case when not a 

 single i?7a'2ro5^<3OT« was within view, or perhaps on the coast. And 

 instead of the Hijperia assailing the fish, the latter would seem to 

 have become the aggressors ; for the stomachs of many of those 

 that were caught about the periods referi'ed to were generally 

 well stored with these Crustaceans. 



On one occasion, and ia winter, immense shoals of the common 

 Herring {Clupea harengus) chanced to visit us — a rather rare case ; 

 and great numbers were taken. About two dozen of these came 

 into my household, and, as is my usual practice with all kinds of 

 fresh fish, I of coui'se looked into their stomachs to see what could 

 be got there. On doing this I was rather surprised to find them 

 all full of this Amphipod, as I had never before found them in the 

 herring. This caused more to be procured, which were caught 

 the day after, and I found their stomachs full also. From one I " 

 took 59, from another 47, and from a third 33 ; and all the others 

 were more or less well crammed. 



These statements are not on hearsay. They refer to undeniable 

 facts which came under my own personal observation. 



