248 CHILD. [VOL. I. 



responding partial furrows, but at the right there is no separation, 

 unless the region / be regarded as representing the right side of 

 e. It is perhaps more correct to say that the right side of e is 

 bounded ventrally by the left one of the two curved furrows, 

 while dorsally e runs into g y and a small partial segment, /, 

 mostly dorsal, laps over the edge to the ventral surface and fills 

 the space left. 



The furrows separating e and g on the left half of the body 

 do not reach the left edge, though they end very near it. They 

 are both rather shallow, thus indicating that the division between 

 the two partial segments is less complete than normal. 



The genital organs at the left of e present very peculiar and 

 unusual relations. Ovary, vitellarium, and seminal receptacle of 

 the normal size are present, and anterior to these and extending 

 into g is a vas deferens which is closely coiled. This whole 

 complex of organs does not lie in the normal position, but some- 

 what to the left of it, in the longest region of the partial segment 

 e. I think it is possible that its position is due to the fact that 

 the length is greater here than elsewhere. There is no trace of 

 ducts leading to the edge ; indeed, the oviduct beyond the seminal 

 receptacle is absent, and the vas deferens does not extend even 

 beyond the edge, but is coiled in a mass just anterior to the 

 ovary. Doubtless this condition is due to the abnormally great 

 distance between the organs and the edge. Careful examination 

 of both surfaces of the region about the organs showed that there 

 was no trace of a surface pore. I found, however, that the 

 seminal receptacle was full of spermatozoa, a fact which indicates 

 that the vas deferens opens directly into the seminal receptacle. 

 The coils of the vas deferens were so dense and close, however, 

 that it was impossible to find the connection. A pore corre- 

 sponding to this set of organs exists at the left edge of e, but it is 

 rather small and there is no trace of ducts leading from it. At 

 the left of g there is a normal set of genital organs. On the 

 right side of e g there is no division, unless, as suggested above, 

 / be regarded as corresponding to e, and accordingly only one 

 set of genital organs appears. In this the vas deferens is com- 

 plete and normal, but the oviduct does not connect with the pore 

 at all, ending instead with the seminal receptacle, s.r., which is of 



