152 C0NCH0DERMA VIRGATA. 



rather more acuminated than the lower; lateral lobe 

 triangular in outline, twice as wide as either the upper 

 or lower lobes ; lying in the same plane with them, and 

 standing out at almost exactly right angles. 



Terga, flat ; placed obliquely to the scuta, and barely 

 half as long; separated from them by nearly twice their 

 own length ; upper and lower points acuminated ; the 

 umbo on the carinal margin forms a projecting shoulder ; 

 the scutal margin is straight, they are separated by nearly 

 their own length from the apex of the carina. 



Carina narrow, very slightly arched, within slightly 

 concave, both points acuminated ; lower third rather wider 

 than the upper part ; in length equalling three fourths of 

 the scuta, and longer by one third than the terga ; about 

 as wide as the latter. 



Filaments, Cirri, and Mouth exactly as before. 



In some specimens sent to me by the Rev. R. T. Lowe 

 from off the Testudo caretta, taken near Madeira, the 

 scuta have their lateral lobes broad and nearly rect- 

 angular : the carina extends nearly to between the terga : 

 the terga are nearly straight, somewhat pointed at both 

 ends, distant from the scuta, almost solid within, with 

 their upper points bowed outwards : the whole capitulum 

 is bluntly pointed, as in the var. c/te nop Zulus, to which 

 form this makes a rather near approach. 



C. virgata, var. Olfersii. 



Cineras Olfersii. Leach. Tuckey's Congo Expedition. 

 Hab. South Atlantic Ocean. 



Scuta, unlike on the opposite sides of the same indi- 

 vidual, on one side with a single lateral lobe as usual, 

 but this very narrow, on the other (fig. 2 d), with five 

 lobes or projections. 



Terga slightly concave within, separated by a little more 

 than their own length from the tips of the scuta, and by 

 one third of their own length from the tip of the carina. 



