Carpentkr — The Apterygota of the Seychelles. 7 



Corethromachilis brevipalpis sp. iiov. 

 (Plates II, III, figs. 27-44 ; Plate V, figs. 63-6.) 



Paired ocelli (fig. 35 p.o.) long and narrow, almost in contact centrally. 

 Feelers longer than the body, basal segment two and a half times as long as 

 broad (fig. 35) ; regions of fiagellum (fig. 36) with L4-16 segments each. 

 Jaws of typical machilid form, " brush " of maxilla less prominent than in 

 C. Gardineri. Maxillary palp one-fifth length of body. Legs (fig. 43) 

 moderately long ; claws long and scopula scanty (fig. 44). Stylet on second 

 abdominal segment (fig. 28s)t) with short teruainal spines. Median 

 tail-process longer than body ; cerci as long as body. 



Length (without appendages) 15 mm. Colour of scaling rather paler 

 than in C. Gardineri. 



Localities. — Mahe: in the mountain forests (August and September, 1908). 

 Silhouette : forest near Mare aux Coclions, 1000 feet (September, 1908). A 

 number of specimens from each locality, but the species is evidently less 

 abundant than C. Gardineri. 



G. brevipalpis is a somewliat larger species than C. Gardineri, but the 

 maxillary palp (fig. 39^) is absolutely shorter and feebler than in the latter 

 (see fig. Q p). The jaws of C. brevipalpis differ less markedly from those of 

 typical Machilids than do the corresponding structures in C. Gardineri, the 

 mandible (fig. 37) and maxillula (fig. 38 Mxl.) being of the proportions usual 

 in the family, and the galea (fig. 39, 40//) of the maxilla being longer than 

 broad. The lacinia (fig. 40) is furnished with a " brush," but its bristles are 

 less numerous and prominent than those of C. Gardineri. The first segment 

 of the maxillary palp has its process sub-cylindrical ; the proportions of the 

 other six segments are as 5 : 4 : 5 : 7 : 5 : 6. The legs are of the same general 

 build as those of C. Gardineri, but longer, and the conspicuous claws, with a 

 slight tendency to indentation along the inner edge, and the scanty 

 scopulae (fig. 44) make discrimination between the two species easy. The 

 abdominal segments and their appendages (figs. 27-34) correspond closely with 

 those of G. Gardineri, except that the stylets of the second (fig. 28 st) have 

 distinct though short terminal spines. The tip of the oviijositor reaches only 

 to the base of the spine on the ninth abdominal stylet. Its gonapophyses 

 have from fifty-five to si.xty segments each (figs. 63-64). 



The ovipositor in these insects is well worthy of study, though of less value 

 than the male reproductive processes in specific determination. There are 

 two pairs of gonapophyses on the eighth and ninth segments respectively (see 

 figs. 63, 64 go) ; the bases of these are connected with the inner anteriof 



