OF MAXILLULA IX THE ORDERS OF INSECTS. 



431 



extreme tip. PI. 31 is drawn from a preparation in which the maxillulse 

 were pressed apart so as to expose the hypopharynx. This latter measures 

 "56 mm. in length. The length of the left maxillnla is - 59 mm. and its 

 greatest width 1"9 mm. A pair of long peduncles (/'.<?.) support the 

 hypophyarynx. 



The cavity of the maxillula was found to be undivided; the sutures 

 separating the lobes consisting of no more than ridges and grooves in the 

 upper wall only. Of thesG ridges, that which murks off the outer lobe, arises 

 beyond the palp. At its base is the rounded, chitinous structure (a.) sug- 

 gestive of an articulation. A short distance behind the apex of the inner 

 lobe there projects from the depression between this and the outer lobe the 

 curious structure (/j), armed with six curved teeth, which point towards the 

 surface of the maxillula ; the portion of the palp (p.) beyond the lateral wall 

 measures - 14 mm. in length. 



Text-fi>. 1. 



Campodea lubbocki. Dorsal aspect. From a preparation stained with acid fuch.-in. 

 Pressure has been applied and the maxillulse are displaced outwards, x 200. 

 a. Articulation of maxillula. h. Hypophaiwnx. m. Maxillula. s. Supporting- 

 skeleton. 



Campodece. — In his paper on the Campodea?, Meinert (32) described the 

 lingua and paraglossia of Japyx and of Campodea. The lingua, ho says, is 

 small in the former genus and the paraglossee large and bilobate. In the 

 latter the appendages are large and flat, entirely covering the dorsal surface 

 of the oval lingua. Hansen (21) states that the two genera are closely allied 

 as regards the structure of the mouth-parts. He agrees with St. Traunfels 

 that in Japyx the maxillulse consist of an inner lobe, an outer lobe, and 

 a three-jointed palpus. In dealing with these structures, in Lepklocampa 

 fimbriatipes Carpenter (8) states his belief that tins outer lobe and palpus 

 were rightly referred to the maxilla? by Borner in 1908. 



Specimens of Campodea lubbocki (Silvestri) (for the identification of which 

 I am indebted to Mr. R. S. Bagnall) were collected at Fallow Sold, Manchester. 



