68 bulletin: museum of comparative zoology. 



156. EcTOPTYX SOMONUS, sp. nov. 

 Type.— M. C. Z. 2,139. Fijis: Somo Some (W. M. Mann). 



Coloration of the usual type. 



Head of the ordinary general form, 1.6, or slightly less, times longer than 

 wide. The clypeal region lacks the small median chitinous spot present in the 

 preceding species and the areolated region is more extensive. 



Labrum with ciliary lines as usual. Median piece somewhat oblanceolate 

 in outUne, the lateral margins evenly convex; much narrow^er proportionately 

 than in the preceding forms, being in the type about 2. .3 times longer than the 

 greatest width. 



Mandible with eleven lamellae inclusive of the two reduced and modified 

 ectal ones. The first has nineteen teeth. These are of almost uniform length, 

 not being notably reduced in length proximad as in E. turucanus, etc. The 

 margin below the first lamella is very minutely serrate for a short distance. 

 A median lamella has the teeth reduced proximad as usual; number not 

 precisely determined, but near forty. 



Ectal angle of first maxilla scarcely at all produced, the corner being sub- 

 rectangular or only slightly acute. Areas of coxosternum of second maxillae 

 as usual. 



Teeth of presternum low and rounded. Teeth of prehensors normally 

 developed. 



Sternal impressions furcate but the branches short and weak, sometimes not 

 easily seen, the angle obtuse. 



Sternite of pregenital segment narrowed caudad as usual, lateral notching 

 toward caudal end in the type scarcely evident. Coxopleural pores very 

 numerous and small as usual. 



Pairs of legs, forty-nine. 



Length, 48 mm. 



157. EcTOPTYX siARONUs, sp. nov. 



Type.— M. C. Z. 2,142. Paratypes.— M. C. Z. 2,150, Fijis: 

 Viti Levu, Saiaro (W. M. Mann). 



Color much as usual. The black network on dorsum very dense, a median 

 dorsal yellow line present in posterior region. 



Head nearly 1.75 times longer than wide. Clypeal region with no small 

 median chitinous -spot such as present in the first three species (p. 6.5-67). 



Labrum with ciliary Unes conspicuously showing over outer two thirds or 

 more of free margin on each side. Median piece much narrower than in the 

 three species (p. 65-67); exposed area narrowly oblanceolate or spatulate; 

 a narrow median part of anterior margin bulging forward; nearly three times 

 as long as greatest width. 



