258 Records of the Indian Museum. [Vol. X, 



The next commonest genital mark is (ii) a similar oval 

 area in furrow il, of whitish colour, stretching from between 

 lines a and h on one side to a corresponding point on the other. 

 This has the form of a low flat papilla ; it was present, though 

 not always equally well-marked, in about half the specimens 

 examined, (iii) In one case there was a slight whitish ill-defined 

 elevation in the situation of groove ||. 



Septum I is thin or only slightly thickened ; the septa 

 increase in thickness from f to to, and then continue thick to 

 II . II is thinner again, and thence onwards all are thin. 



There is no gizzard ; the intestine begins to swell out in 

 XV. The last heart is in xiii. 



The nephridia are absent from the first twelve segments; 

 they are present in segment xv. and onwards, but (in the 

 specimens dissected) absent in xiv, though either one or a pair 

 were found in xiii. 



Small testes were seen in segment x ; they were not identi- 

 fied in xi, but funnels were present in both segments (x and xi). 

 Testes and funnels were free in tht- body-cavity. 



The vesiculae seminales are two pairs, in xi and xii, each 

 grapelike, being cut up deeply into small lobes 



The prostates are of moderate size, tubular and slightly 

 coiled, especially at the free end. which is posterior; they run 

 forwards and inwards, from the eighteenth to the seventeenth 

 segment, and at their anterior end, where the duct commences, 

 they lie alongside or under cover of the intestine (in the dissected 

 animal). The duct runs backwards and outwards, roughly 

 parallel to and on the inner side of the glandular portion ; it is 

 strong, stout and intensely glistening, only slightly curved, and 

 of approximately the same diameter throughout (or perhaps 

 sHghtly narrower at its outer end); it is rather shorter than the 

 gland. 



Ovaries and ovarian funnels were seen in xiii. 



The spermathecae are two pairs, lying in segments viii and 

 ix. The ampulla varies in shape from roughly spherical to elong- 

 ated ovoid ; the duct is of moderate or relatively considerable 

 width, and is nearly as long as (subspherical ampulla), or more 

 than half as long as (elongated ampulla), the ampulla itself. The 

 diverticulum is tubular, not swollen or very slightly swollen at its 

 internal end; its length also appears to vary, — it may either fall 

 considerably short of or extend considerably be5''ond the end of 

 the ampulla, according as this latter is or is not elongated in form. 

 The name diverticulum is in strictness hardly applicable, as the 

 structure to which it is applied is here implanted on the inner 

 surface of the body-wall separately from though close to the end 

 of the duct. No penial setae were discovered. 



The present species has been described by Rosa (9) from 

 Christmas Island; the chief differences between that author's 

 specimens and mine are the absence of the genital papillae on || 

 and tI> and the " deep .slit-like" character of the marking on i^ 



