IS 



the John Dory ? Of the Rcmora ? On what principle is Ciivicr'a 

 classification of fishes founded ? Into what two j^reat f^roups are 

 they divided? Name the first Order of osseous iishes and {jivo 

 examples. Name the second j^roup and the Orders into which it 

 is divided. Name the remaining Orders; explain the meaning 

 of the name; give an example belonging to each. Name the 

 three Orders of cartilaginous fishes, give an example belonging 

 to each, and stiite the difference iu the gills and gill apertures. 

 Cautilagixous FisnKS. — P. 239. 



Petromyzidm. — P. 239. — The family of the Lampreys. — What is 

 the origin of the scientific term ? What small fish of rare occur- 

 rence i)elougs to this family ? How was it formerly cla.ssed ? 

 What is remarkable in its skeleton? What in the habits of 

 some exhibited at Southampton ? 



Squalidcc Raiidce. — P. 240. — In the Sharks and Eays what is 

 the structure of the gills ? How are the ova deposited ? By 

 what names are the empty egg-cases known? How are the 

 young nourished? Among the Sharks, which are larger, the 

 males or the females? Give some of their English names. 

 What is the skin used for? What is said of the small Spotted 

 Dog-fisli ? Of the White or the Blue Shark ? Size of the Bask- 

 ing Shark ? What is said of the Blue Shark ? As examples of 

 providential care, state the arrangement for aeration of the 

 blood in the young. Also that regarding the teeth of tlie Sharks. 



Stiirionida. — P. 243. — Family of the Sturgeons. — What is re- 

 markable with regard to the surfitce of the body ? What in the 

 appearance of the tail, as contrasted with that of the Perch ? 

 Did this form occur in former ages ? Why a royal fish ? What 

 dimensions ? What is made from it ? 



Osseous Fishes witu Flexible Rays. — P. 244. 



Order Plectognatiii. — The Globe-fish and Trunk-fish already 

 mentioned belong to it. 



Order LopnoBRANcnii. — How are the gills arranged ? What fishes 

 belong to it ? Has any fish a marsupial pouch ? What is its use ? 



Order MALACorrERYcn Apodes. — Family Angmllidcc, that of 

 the Eels. Meaning of the term Apodes? What are Sand Eels? 

 What size docs the Conger Eel attiiin ? What error is yet current 

 respecting it? How many British species of fresh-water Eels? 

 What is said of the fishery at Toome ? What of the young Eels 

 ascending the river Bann ? Do Eels ever voluntarily leave the 

 water ? What is said of their power of enduring cold ? 



Order Mal ScB-BHAcniALES. — P. 247. — Family Ci/cUypleridce. — 

 What is sixid of the ventral fins of the Lump-sucker? Of its 

 power of adhesion ? What is saitl of the value of Turbot brought 

 to the London market ? What fishes belong to the family Gadida f 



Order Mai- Abdominales. — Family Clupeida:, that of the Her- 

 jing. — What of the White-bait? Importance of the Pilchard 

 fishery? Of the Herring fishery? What does Pennant sjiy of 

 the approach of the Herring? What is the true explanation of 

 the phenomenon? Family Salmonida. — P. 252. — What is said 

 of the Pollan? Gillaroo Trout, for what remarkable? Size of 

 the Great I^ake Trout ? Difference of colour, how caused ? Mi- 



