1070 



.SCANDINAVIAN MSHE.S. 

 S b 



fspo 



4^ r ^ 





J\i 



hbr 

 A 



pJihi, 



phbr 



ebr, 

 br. 



>)^ 

 evs I 



^^ 

 cbr^ -V 



ebt I phb>\ -^ 



h- 



,h,,b, 



P )» nb 



fb>,cr. ,b,, ''"■. ^'^"\rhy Mk 



psc fom 



hsc i ^ 



%y^ n(< ch lag 

 V 



Fig-. 298. Skull of Housh Hound (.Sci/lliarhiniis caiikula). 



[•en from abnvi 



AftlT P.MtKEIi. 



(.4), from the right (S), and from hchiiid (<'). Natural siz 



aqc, atjnceductus vestibuli; asc, external prominence of the anterior semicircular canal of the labyrinth; bbr, basihranchiale (cojuilii); br, Ciir- 



tilaginous rods of the branchial membranes; cbr^ j, ceratobranchials of the first — fifth branchial arches; ch, space for the notochord, filled 



with cartilage; cIi?/, ceratoliyoideum; cp, preorbital canal; ctr, cornua trabecularinn in the floor of the skull, seen through the prefrontal 



fontanellc; ebr^ 5, epibranchials of the first — fifth branchial arches; evs, extravisceral cartilages; fom, foramen magnum; fspo, supraorbital 



foramen; gp, foramen for llie neruns glossophargngeus; hbr^ 2' hypobranchials of the first and second branchial arches (other hypobranchials 



not denoted); hm, hyomaitdibuhire; hue, external prominence of the horizontal (enter) semicircular canal of the labj'rinth; la, anterior suspen- 

 sory ligament, for the palatoquadrate cartilage; Imi, labial cartilage of the lower jaw; Ims, labial cartilage of the upper jaw; /«, — ,, anterior 

 and outer nasal labials; Ip, posterior suspensory ligament, for the palatoquadrate cartilage (upper jaw) and the mandibular arch (Meckelian 

 cartilage); Iv, rostral labials; Mk, Meekeliau cartilage (lower jaw); N, nasal capsule; occ, occipital condyles; o;)(, optic foramen; phbi\ — 5, 

 pharyngobrauchials of the first — fifth branchial arches; prob, preorbital process; psc, external prominence of the posterior semicircular canal 

 of the labyrinth; ptoh, postorbital jiroccss; ptp, suspensory process of the pterygopalatine arch; qpq, pterygopalatine cartilage; R. rostral 

 cartilage; i\ bi\ branchiostegal rays; spc, spiracular cartilage; spi7% spiracle; /;■, foramen for the nevLnis tr/geniimis; rag, foramen for the 



nei'vus vagus. 



