42 Proceedings of the Ro>^al Irish Academy. 



empodial appendage very long, narrowly lanceolate (figs. 48-49). Spring 

 three-fifths as long as the body, the manuliriinn as long as the somewhat 

 robust dens (fig. 47). Mucro (fig. .50) stout, willi the terminal tooth small, 

 not procurved dorsalwards and the dorsal tooth close to the terminal. 



Length 2'5 mm. Colour pale yellow, with the greater part of the second, 

 and the whole of the third and fourth antennal segments, the tip of the hind 

 thigh, the lateral borders of the meso- and metanotum, lateral patches on the 

 fourth abdominal tergum and sterna, and the tip of the sixth abdominal 

 segment deep violet. 



Localities. — Mahe : Cascade, 1000 ft. (many specimens, 1908); Foret 

 Noire, 1000 ft. (many specimens, October, 1908). 



This is a very interesting species, showing the long feelers, legs, and 

 spi-ing, and the type of coloration found in the two preceding species and 

 their African and Oriental relations, while the relatively short and blunt 

 mucro recalls that of the common European L. lamu/i'iwsiis, TuUberg. 



Acanthnrella Borner. 



Acanthurella was established by Borner ('06, p. 176) as a sub-genus of 

 Lepidocyrtus for the species from the Seychelles here recorded and another 

 species from Java. The presence of strong spines on the dentes of the spring, 

 the modification of the mucro, and a characteristic facies differing from that 

 of typical Lepidocyrtus, may warrant the recognition of Acanthurella as of 

 generic rank. 



Acanthurella Braueri Borner. 



Apparently this is the only species of Collembola hitherto recorded from 

 the Seychelles. Borner (06, p. 176) describes its structural features, but gives 

 no figures, nor any precise locality. From the number of specimens from all 

 the stations mentioned in the present collection, it appears to be common in 

 the islands of Mahe and Silhouette. 



Zoca/V/iV-s.— Mahe : Foret Xoire, 1000 ft. (1908) ; Cascade, 1000 ft. (Oct., 

 1908); Mare au.x Cochons, 1O00-2O00 ft. (January, 1909). Silhouette (1908). 

 Numerous specimens from all localities. 



There is little to be added to Borner's description of this spring-tail. 

 The feeler is less than twice as long as the head, the proportional length of 

 the segments being as .5 : 11 : 11 : 12. The mesonotum is twice as long as 

 the metanotum, the fourth abdominal segment five times as long as the 

 third. The two posterior innei" ocelli are much smaller than the other 

 six (fig. 52). The mucro of the spring is very characteristic in form, haxang a 

 small, almost straight, terminal tooth, and a broad and very prominent dorsal 

 tooth : the spine is long and distinctly curved (fig. 54;. 



