THE OLIGOCH^TA TERRICOL^. PART I. 197 



XII, and I think in segment X also. However, in segment X 

 I may have mistaken masses of developing sperm for actual sacs. 



The spermiducal gland is small and limited to one segment, the 

 XVIIIth, the septa of which, however, are somewhat stretched 

 apart to enable the gland to lie in this one segment. The 

 gland is nearly divided into two and is compact in character ; it 

 is seen to be finely lobate when examined with a lens. The duct 

 runs straight toward the mid-ventral line of the body; it then 

 bends upon itself and runs parallel with its former section to 

 its orifice, which is unprovided with a bursa copulatrix. The 

 recurrent section of the duct is much the stouter. The ovaries 

 and the oviducts were identified, but present nothing particu- 

 larly noteworthy in appearance. The spermathecse are in 4 pairs 

 and open on the segmental furrows V/VI and VIII/IX. It is a 

 remarkable fact that in both (the only) specimens the Vlllth 

 segment contained 2 pairs of spermathecse, one pair opening 

 anteriorly, the other posteriorly ; that is, between segments VIII/ 

 IX. This, indeed, furnishes one of the arguments for consider- 

 ing segment VIII to be separated by a septum from segment IX. 

 In no species of Pheretima, so far as I am aware, does the pos- 

 terior pair of spermathecse open so far back as the intersegmental 

 groove IX/X. I believe that the inclusion of 2 successive pairs 

 of spermathecse within the same segment is new to the genus 

 Pheretima. 



The spermathecse are, also, somewhat unusual in their form. 

 The pouch has a short diverticulum, which is really a portion of 

 the pouch itself separated by an imperfect septum, as well as the 

 independent and characteristic diverticulum. This state of af- 

 fairs, however, was not apparent in the second specimen and, 

 therefore, need not be considered as of great importance. The 

 duct portion of the spermatheca is not important. The diver- 

 ticulum is as long as, or even slightly longer than, the pouch. 

 It ends in an oval receptaculum seminis which was double in the 

 case of one spermatheca. The duct is narrow and coiled. 



Pheretima incerta sp. nov. 



A large number of examples of a small species of Pheretima 

 was collected in the immediate neighborhood of the Bureau of 

 Science building, Manila, which present many of the external 

 characteristics of the 3 species which I have just dealt with, but 

 which are undoubtedly different from any of those. Neverthe- 

 less, there is the outward resemblance in the whity-brown color 

 of the clitellum, in the slender form and short length, and in 



