21G 



MK. G. P. MUDGE ON THE MYOLOGY 



suggest an caily stage in the formation of a tendon for this small muscular tract 

 (cg.i.jiK). In virtue of this posterior extension of the outer portion of the muscle it 

 constitutes the second stage in its evolution, and inasmuch as the extended portion is 

 continuous with the parent muscle it is still of the unipars type. 



Stage 3. 



In Stringops hahroptilus a further advance is represented in the slightly greater 

 extension of the muscular tract (PI. XXVIII. fig. 26, cg.i.j).) along the hypobranchial, 

 and more particularly in that this extended part has become severed from the muscular 

 portion of the parent muscle (text-fig. 1, cg.i.a.), but is connected with that by 



Test-fig. 1. 



Strinrjops 7iahroj>tihis. — Dorsal view of ceratoglossus inferior (right side). (Twice nat. size.) 

 cg.i.a. = ceratoglossus inferior anticus. 

 cg.i.a . = „ „ (inner portion of). 



cg.l. = „ lateralis. 



cg.i.a-. = the portion of ceratoglossus inferior anticus which arises from the uroh3al. 

 cg.i.p. = ceratoglossus inferior posticus. 

 i'. = tendinous ventral fascia of cg.i.a. 

 t. = posterior prolongation of <'. 

 a. = point of insertion of muscle to anterior lateral process of entoglossum. 



attachmenj; to a slender prolongation {t.) of its ventral fascia (^'.). Thus, that which 

 is but a posteriorly directed extension (cg.i.j)'^.) of the outer portion of the parent 

 muscle in Cacatua galerita, is here an independent muscle (cg.i.jj.) with an origin from 

 the fascia of the parent one and an insertion along the anterior tliird of the hypo- 

 branchial. I propose to speak of this muscle {cg.ip.), which reaches a much greater 

 development in more specialized forms, as the ceratoglossus inferior posticus. The 

 slender prolongation of the tendinous fascia to which it is attached, and which is 



