20 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 92 



48. Musculus promotor I maxillae (fig. 7). — This muscle arises on 

 the head apodeme and runs f or\vard and outward to its dorsal inser- 

 tion in the extreme lateral part of the coxopodite beneath a disklike 

 ossification near the inner hinge of the coxopodite. This muscle moves 

 the coxopodite forward and upward. 



49-50. Musculus remotor I maxillae a and b (fig. 7). — The shorter 

 branch of the remotor (49) arises on the ventral part of the head 



50 49 



Endpd 



Fig. 7. — The first maxilla. 



4S, musculus promotor I maxillae ; 49-50, musculus remotor I maxillae ; 

 51, musculus adductor anterior I maxillae; 52, musculus adductor posterior I 

 maxillae ; 53, musculus abductor coxopoditis I maxillae ; 54, musculus levator I 

 maxillae; 55, musculus depressor I maxillae; 56, musculus adductor endopoditis 

 I maxillae. 



ACxpd, anterior part of the coxopodite; PCxpd, posterior part of the 

 coxopodite ; Cndi and Cnd2, first and second endites of the coxopodite ; Endpd, 

 endopodite. 



apodeme external to the origin of the main branch, traveling parallel 

 to the latter to its insertion on the posterior dorsal angle of the basal 

 rim of the coxopodite beneath and slightly median to the insertion of 

 the promotor. Lying directly below the promotor, the longer branch 

 of the remotor {50) arises on the ventral surface of the head apodeme 

 somewhat posterior to the origin of the promotor. It is inserted ven- 

 trally in the anterior dorsal angle of the basal rim of the coxopodite 

 at a point considerably posterior to the insertion of the promotor and 

 near the union of the coxopodite with the ringlike outgrowth which 



