1904.] NATURAL SCIENCES OF PHILADELPHIA. 803 



DESCRIPTION OF A NEW SPECIES OF EARTHWORM (DIPLOCARDIA LONGA) 



FROM GEORGIA. 



BY J. PERCY MOORE. 



Forming part of a small collection of earthworms gathered by Mrs. 

 T. W. Walker in Pulaski county, Georgia, and secured for the Academy 

 through the interest of Mr. Joseph Willcox, are seven specimens of a 

 hitherto unnoticed species of Diplocardia. Its most distinctive feature 

 is found in the coexistence of the second gizzard and the first pair of 

 spermathecffi in the same somite, in which respect it is unique among 

 known species of the genus. In the presence of the gizzards in somites 

 VI and VII it resembles D. michaelseni, but differs from that species 

 in the possession of three pairs of spermathecse. The latter character 

 and numerous others which appear in the following description evi- 

 dently ally it to the communis group, but the great number of segments, 

 high level of the nephridial openings, form of the spermathecfe, etc., 

 are diagnostic. 



Diplocardia longa n. sp. 



Size of D. covimunis; length in moderate extension up to 275 mm. ; 

 diameter at VII 5 mm., behind the clitellum 4 mm. Number of seg- 

 ments 270 to 330. Form slender, terete throughout ; diameter increas- 

 ing to VII, then diminishing to the clitellum which is slightly enlarged 

 and prominent, then narrowing a little and remaining nearly uniform 

 to near the end, where a slight club-shaped enlargement precedes a 

 final shrinkage to the anal ring. 



Prostomium very short, broad and nearly truncate, in most speci- 

 mens scarcely projecting beyond the peristomium into which it is 

 tenoned for about one-half the length of the latter. The exact form, 

 however, differs in the several specimens ; in some the two sides nearly 

 meet within the peristomium; in others they are more nearly parallel 

 and may be continued by grooves nearly to the posterior border of the 

 latter, or they may merge into transverse grooves. Both prostomium 

 and peristomium are much marked above with longitudinal wrinkles 

 and the former has a deep ventral furrow. 



The somites increase in length to VII, and then diminish to about 

 one-half in the postclitellial region, after which they change but Httle 



