92 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Genus ORECTOLOBUS Bonaparte 



Orectolohus Bonaparte, Icon. Fauna Ital., Pesci, vol. 3, fasc. 7, 1834 (descrip- 

 tion). (Type, Squahis harbatus Gmelin, intended by Gill, Proc. U. S. Nat. 

 Mus., vol. 18, p. 211, 1895.) 



Chrossorhinus Andeew Smith, Proc. Zool. Soc. London, 1837, p. 86. (Type, 

 Squalus lobatus Schnei(ler=Squalus harbatus Gmelin, monotypic. ) 



Crossorhinus MtJLLER and Henle, Sitz. Ber. Aslvad. Wiss. Berlin, vol. 2, p. 118, 1937 ; 

 Syst. Beschr. Plagiostomen, p. 21, 1841. (Type, Squalus barbatus Gmelin, 

 monotypic.) 



Eucrossorhinus Regan, Proc. Zool. Soc. London, 1908, p. 357. (Type, 

 Crossorhinus dasypogon Bleeker, monotypic.) 



Body stout, depressed, cavity half or more total length. Tail 

 shorter, slender, compressed. Head wide, flattened above. Snout 

 obtuse. Eye small, orbit elongate. Mouth wide, transverse, nearly 

 terminal or partly inferior, labial folds on both jaws and around 

 angles. Teeth compressed, narrow, with or without small lateral 

 denticles. Nostrils near snout end, joined with mouth by nasoral 

 grooves, front nasal valves with cirrus. Gill openings narrow, third 

 to fifth above pectoral, fourth and fifth close together. Spiracle 

 moderate or wide oblique slit below and after eye. Sides of head 

 with many skinny flaps. Chin with or without barbels. First 

 dorsal after ventrals, second before anal. Anal small, close to sub- 

 caudal. Tail short. Caudals narrow, other fins short and broad, 

 notch between subcaudal and terminal. 



Eastern Pacific, Australia. "The Wobbegongs or Carpet Sharks 

 are ovoviviparous ground sharks of sluggish habits, frequenting the 

 neighbourhood of the shore, where they lie concealed among the 

 weed covered rocks. Their beautiful color patterns, harmonious 

 contrasts of varied browns and lilacs, assimilate their surroundings 

 so perfectly as to deceive the small fishes and crustaceans which with 

 mollusks, form the bulk of their food. The imitation is accentuated 

 by the fringes of dermal lobes which adorn the lips and sides of the 

 head, and which are not found in any other selachian." (Ogilby 

 and McCulloch.) 



ANALYSIS OF SPECIES 



a*. Oeectolobus. Last 2 gill openings little closer than others. 

 &\ Nasal cirrus with at least short median branch. 

 c\ No supraorbital papilla : chin usually without dermal flaps. 



d'. Dermal lobes simple ornatus 



d^ Dermal lobes bifid or trifid japonicus 



c'. One or 2 supraorbital papillae ; chin usually with dermal lobes. 



e\ Side of head with only few wide-spaced dermal lobes maculatus 



e". Side of head with nearly continuous row of branched dermal lobes. 



ogilbyi 



&l Nasal cirrus simple; supraorbital papilla present tentaculatus 



a'. P^ucROSSOBHiNus. Gill openings equidistant ; nasal cirrus ramose ; 16 to 20 

 dermal flaps along edge of lower lip dasypcg'on 



