316 MR. CYRIL CROSSLAXD ON THE [Feb. 1(5, 



Gravier's figuve, and as that of Savigny is not very intelligible, I 

 append a representation of it in text-fig. 58, p. 315, and fig. 4, 

 PI. XXII. The most striking feature is the strong development 

 of the left unpaired lateral, which lies alongside the great dental 

 in a way which recalls the arrangement of these parts in the 

 Oiauphidinse. This arrangement, carried still further, is found, 

 howevei', in several species of the genus, e. g. E. indica. The 

 following are some formulte of the teeth, which form a contrast to 

 the laroer numbers found in U. indica : — 



6-7 : 10 + 9-8; 

 5-7: 7 + 7-8; 



5-7 : 7 + 7-12; 

 5-6 : 5 + 8- 9. 



In lai'ge specimens the plates are strongly made, dark broAvn 

 throvighout, and but sparingly bordered with white matter, except 

 the end-pieces of the lower jaws, which are purely calcareous. 

 Even in small specimens, in which the lower plates are white 

 throughout, the chitin is well developed over the whole of the 

 upper, so that in aU cases a marked contrast exists between these 

 and the feeble, almost completely calcareous plates of £J. indica. 

 There are no difi'erences between the great dental plates of either 

 sidevv^hich could amount to the '■^dissymmetriefrapjjante" described 

 ])y Gravier (/. c. p. 257), whose description and figure I'ecall rather 

 these parts in E. indica (see p. 320). As usual in most species, the 

 left plate bears slightly fewer teeth, of which the uppermost is 

 1 tetter developed than that on the right, but this is all. The 

 maxillaiy forceps are very strong and bi'oad, and in the older 

 specimens bear a ridge dorsally near their points, as iirdicated in 

 text-fig. 58 (p. 315). 



I do not find the two projections of the dorsal ciiTus in the 

 antei-ior feet which Graviei- describes. 



The setfe agree well with Gi'avier's figures. All are smooth and 

 of a light colour. The compound setfe show no, or but little, 



Text-fi2'. 59. 



X280 



T"ffo aciculav seta; of S. antennata in tlieir natural relative positions. 

 Compare the shapes of their liooks. 



stiiation, and the acicula are not black, though striated longi- 

 tudinally. There is, however, no joint in the acicular setse, which 

 ai'e invariably three-hooked, of a bright yellow colour, and generally 



