122 bulletin: museum of comparative zoology. 



stumpf dreieckigen. Der iauere Hocker dlirfte uach Aualogie mit 

 Carapodea den lobus intei'nus, der aussei'e die gemeinschaftliche Aula^e 

 des Lobus externus und des Palpus maxillaris vorstelleu." I entirely 

 disagree with the author as to the interpretation of the lobes. In 

 Anurida the lobus externus is not developed out of the palpal lobe of 

 the biramous fundament, but the remaining lobe is the common funda- 

 ment of lobus externus and lobus internus. Therefore Uzel's foot-note 

 on page 36, " An den Maxillarpalpen von Macrotoma (Tomocerus) vul- 

 garis fand ich selbst einen kieiuen Vorsprung, der wohl als Lobus ex- 

 ternus zu deuten ist," etc., is open to criticism ; the minute papilla to 

 which he refers is precisely like several other papillae distributed upon 

 the palpus (see Folsom, '99, Plate 3, Figure 18, pip.), except for a trifling 

 difference in size. It is very doubtful if a difference in this matter exists 

 between Anurida and Tomocerus, especially since the process as observed 

 by me agrees with that of insects in general, as far as is known, excepting 

 possibly Lepisma, presently to be noticed. 



Uzel applied to Tomocerus conclusions drawn from Carapodea, in 

 which he ('98, pp. 33-34, Taf VI. Figuren 79, 80) derives the galea 

 from the palpal lobe. His diagrams, unfortunatel}', do not elucidate 

 the basal relations of the three principal lobes : palpus, galea, and 

 lacinia. 



The completed first maxillae of Campodea (Meinert, '65, Taf. XIV. 

 Figuren 17, 18; Grassi, '86'^, Tav. IV. Figure 2, 13; v. Stummer- 

 Traunfels, '91, Taf. I. Figuren 5, 11) are remarkably like those of Col- 

 lembola (Folsom, '99, Plate 3, Figures 18-21) : the cardo is articulated 

 to the supei'lingual stalk in the same way ; the hollow stipes, distinct 

 head, galea, and lacinia are also alike, and resemble less the homologous 

 parts of Pterygote insects. The solid bifid galea and the fringed seven- 

 lobed lacinia of Campodea, as I call tliem, are by Gi'assi and v. Stunnner- 

 Traunfels regarded collectively as the " innere Lade " or lacinia. The 

 latter author says (p. 223), " Man kann daher bei den drei vorliegenden 

 Formen eine successive Rlickbildung des Aussenladens annehraen. Bei 

 Jajyyx noch zweifach gegliedert, ist er bei Campodea schon mehr reducirt 

 und fehlt bei den Collembolcn ganzlich." It is curious to observe how 

 authors have followed one another in deriving the galea from the palpal 

 fundament. I have shown in Anurida (anticipating later conclusions) 

 that the galea and lacinia both originate from the " cndopodite " of the 

 bifid fundament. 



Japyx, of course, agrees substantially with Campodea. The second 

 maxilla, however (Meinert, '65, Taf. XIV. Figuren 8, 9; Grassi, '86'', 



