106 I^aOF. A. D. I1IM8 ON 



the mucro. In C. montanus the mucro is relatively short, promi- 

 nently tridentiite, and the scale-like appendage is equal in length 

 to that orga.n. In C. indicus the mucro is longer, is not toothed 

 but merely lobed, and the scale-like appendage is considerably 

 shorter. 



Genus Paronella Schott (sens. led.). 



Paronella Schott, " Insektenfauna von Kamerun : Collembola," 

 Bihang till K. Sv. Vet.-Akad. Handl., Bd. 19, Afd. iv. p. 14, 

 taf, iv. 



Paronella Schaffer, " Die Collembola des Bismai'ck-Aichipels," 

 Arch. f. Naturgesch. 1898, p. 408. (Including Trichorypha 

 Schott, loc. cit. p. 16, taf. v.) 



Schiift'er described Paronella daldli from the Bismarck Arch., 

 which is intermediate in its characters between Paronella 

 and Tricltorypha. I have, therefore, followed him by including 

 Schott's two genera in the single genus Paronella. Schott states 

 that the ocelli are four in number on each side in Paronella, but, 

 nevertheless, figures eight in a group ! This latter number obtains 

 in Paronella dahlii. 



* Paronella borneri, sp. n. (PI. X. figs. 70-74 ; PI. XI. 

 figs. 75, 76.) 



Segmentttm ahdominale quartum dvmkliam iranci partem 

 occupans. Antennce corpore longiores. Ocelli 16:8 in thtroque 

 latere capitis. Unguiculus superior denticulis trihus (vel dttohus) 

 instructus ; unguiculus inferior inerviis, Mucrones lati. Long. 

 3"5 m«i. 



Head. — Longer than broad, approximately equal in length to 

 the thorax ; inclined at an angle of 45° with the longitudinal 

 axis of the body. A group of strongly chitinised setai between 

 the eyes and directed forwards towards the bases of the antennaj. 

 The eyes eight in number on each side (fig. 74) ; post-antennal 

 organs absent, 



Antenn(e.— Yery long, the length apparently varying according 

 to age, and sometimes exceeding that of the body and furcula 

 taken together. The first two joints sub-equal in length, 

 the first joint provided with a number of very long slender setfe 

 on its inner and ventral aspects. The third joint a little more 

 than one half the length of the second. The fourth joint long 

 and slender ; variable, biit usually equal to the combined length, 

 of the first two joints ; slightly but irregularly annulated, and 

 densel}^ clothed with setose pile. (Vide fig. 75.) 



Trunk. — Elongate fusiform in shape, sti-aight (fig. 75). The 

 segments related proportionately in length as 7:3:2:4:1:21:2:1, 

 or in other examples as 8:4:3:5:2:21:2:1; the fourth 

 abdominal segment occupying from ^ to |^ of the total length of 

 the trunk. An abundant covering of scales, hairs, and setye 

 (fig. 73). 



