

NO. 



INSECT HEAD SNODGRASS 



103 



Fig. 40.— Maxilla and labium of Dissosteira Carolina. 



A right maxilla, posterior surface. B, left maxilla, anterior view, exposing 

 muscles of cardo and stipes. C, posterior region of cranium, with cervical 

 sclerites and maxilla, left side. D, labium and its muscles, posterior view. L,- 

 stipes and palpifer with bases of palpus, galea and lacmia, lacmial muscles re- 

 moved, anterior view. . , /■ ^ r „^,i^. 



a, posterior articulation of mandible; loAp, apodeme of promotor of _ cardo 

 Cd cardo ; cv, cervical sclerite ; e, articulation of maxilla with cranium ; t, 

 articulation of labium with cranium; Ga, galea; Gl, glossa; Lc, lacmia; Mt 

 mentum; Mx, maxilla; Oc, occiput; ocs, occipital suture; P^, postgena ; /^//, 

 palpifer; Pig, palpiger ; Pip, palpus; Por, postocciput; pos, postoccipital suture; 

 ^^ posterior tentorial pit; q, suture and internal ridge near inner margin ot 

 stipes; r, internal ridge of cardo; s, apophysis of cardo for muscle inseition, 

 SID, salivary duct; Suit, submentum ; St, stipes; t, suture and internal ridge 

 separating p'alpifer from stipes ; Tut, body of tentorium : u, inner ridge at base 

 of posterior wall of galea ; v, keel of salivary cup. 



