BONES OF LOPHICS PISCATORIUS — MORROW. 340 



tions with their ceratobranchials to about midway of their 

 length, they then gradually enlarge until they reach the upper 

 pharyngeals, to the median division of which they give partial 

 support; at their upper third these bones are closely connected 

 with the fourth pair, and are for a short space enveloped by them, 

 in fact forming on each side a nearly rigid pair. At the superior 

 extremities of these bones on the anterior faces of the median 

 upper pharyngeals are processes for their muscular attachments 

 The fourth pair are longer and very much sponger bones than 

 the others, being at their inferior extremities in proportion to 

 the others as ten to three ; on their posterior edges they are 

 somewhat thin with double anterior ridges ; they decrease in 

 size until they reach the third pair, where they expand with shell 

 shaped processes, which as already stated, partially envelop the 

 bones of the third pair ; at the junction with their upper pha- 

 ryngeals they are less in size than at the enveloping process, and 

 also tend to support the median division of the upper pharyn- 

 geals, while the posterior division may be said to be entirely 

 sustained by them. 



62. The upper pharyngeals contain each three plates or divi- 

 sions (anterior, median and posterior), armed with teeth strongly 

 curved posteriorly. The anterior divisions contain each ten to 

 twelve teeth, and are narrow, having processes on their superior 

 extremities for attachment of their muscles. The median divi- 

 sions are somewhat triangular in shape, and their superior edges 

 (the bases of the triangles), are more than four times the breadth 

 of either of the other divisions ; they have each on their superior 

 edges a process for their muscular attachment, and each contains 

 from eleven to fifteen teeth. The posterior divisions are also 

 narrow plates ; at their anterior inferior edges they are curved 

 under and connected with the under posterior surfaces of the 

 second divisions ; on their superior edges there are processes for 

 muscular attachment. These divisions contain each from ten to 

 fourteen teeth. 



46. In the Lophius the supra clavicle (sometimes called the 

 post temporal) is on each side a broad spatulate plate, thin 

 upon its edges, gradually rising to form a ridge along its anterior 



