DESCRIPTIONS OF EARTHWORMS. 325 
are situated laterally in the intersegmental grooves V/VI, 
VI/VII, VII/VII and VILI/IX. The first dorsal pore lies 
in the groove between segments XII and XIII. There are 
no copulatory papillae. Each spermatheca (fig. 6) con- 
sists of a rather large, oval sac, with a distinct, tubular 
duct and a small oblong, pyriform diverticulum, as long 
as the excretory duct. The prostata is a fan-shaped, com- 
pact (not lobed) gland, with a short, thick muscular duct. 
Of the intestinal coeca in segment XXVI only that of 
the left side could be observed; it is a rather long appen- 
dage, faintly lobed at the external side of its inferior 
half, like in P. mandhorensis Mich. '), The remaining 
structure shows no pecularities. 
This specimen could not be referred to one of the known 
Malayan species, which are also provided with four pairs 
of spermathecae. In P. neoguineensis Mich. whose sperma- 
thecae are also provided with a small diverticulum, the 
spermathecal pores at the ventral side are situated so next 
to each other, that the distance between both sperma- 
thecae of the same segment is smaller than that between 
the spermathecae of two succeeding segments; moreover 
the intestinal coeca appear to be absent. P. enganensis 
Rosa and P. Modiglianii Rosa have their spermathecae 
provided with a long diverticulum, while in P. Martensi 
Mich. and P. indica Horst these organs have a totally 
different shape. P. posthuma Vaill. and P. Vordermanni 
Horst possess copulatory papillae in the vicinity of the 
male pores. 
Perichaeta longa Michaelsen. 
A single specimen from Tjibodas (Java), collected by 
Dr. van Bemmelen. 
A mutilated worm, only 65 mm. long, wanting its 
posterior end, appears to be referable to Michaelsen’s P. 
1) loc. cit. Pl. XIII, fig. 19. 
Notes from the Leyden Museum, Vol. XV. 
