DESCRIPTIONS OF GENERA AND SPECIES 711 



This species is characterized by the above definition ; the account given by ROSA 

 deals with but few points, besides those mentioned in the definition ; it is not quite 

 clear from his description whether the spermathecae are in segments xii and xiii or 

 in xiii and xiv ; he merely says that the external opening is on the line between 

 segments xii and xiii and xiii and xiv ; the shape of these organs appears to be 

 characteristic; they are described as being 'claviformi, molto allungati.' There are 

 special accessory papillae upon segments xvi and xxvi, which bear the ventral setae ; 

 the last pair are not so constant as the first, and are connected by a raised 

 transverse ridge. 



(23) Allolobophora smaragdina, ROSA. 

 A. smaragdina, ROSA, Boll. Mus. Zool. Torino, 1872, No. 130. 



Definition. Length, 80 mm. ; breadth, 6 mm.; number of segments, 104. Clifellum, 

 XXir, XXF-XXXIII. First dorsal pore, IF/7. Tubercula pubertatis on XXX-XXXII. 

 Setae paired, ventral in position. Spermathecae, two pain in IX/X, opening IX/X, X/XI, in 

 line with dorsal setae. Hob. Bleiberg, CarintJiia ; at icoow. 



The most noticeable character of this species, when alive, was the bright green 

 colour, which, as ROSA observes, is a rare colour among earthworms. The colour 

 seems to be like that of A. molleri, Microchaeta rappii, and a Benhamia referred to 

 above (p. 559). The sperm-sacs are four pairs in ix-xii, without any median 

 sperm-reservoir. 



(24) Allolobophora constricta, ROSA. 



A. constricta, ROSA, Lumbr. Piemont., 1884, p. 38. 



A. subrubicunda forma constricta, MICHAELSEN, JB. Hamb. wiss. Anst., vii, 



1890, p. 15. 



Definition. Length (in alcohol], 20 mm., when alive up to 45 mm. ; number of segments, 

 100. Clitellum, XX7I-XXXI. Setae paired but not strictly. No tubercvla puberttfi*. 

 No spermathecae. Hob. Italy. 



The reasons which led MICHAELSEN to regard this species as at most a variety 

 of A. subrubicunda were the variability in the tubercula pubertatis coupled, of course, 

 with the other points of agreement, such as small size and position of the clitellum. 

 Out of twenty-two specimens of A. subrubicunda collected, fourteen belonged to the 

 variety ' (onstricta' ; the rest were intermediate in characters. The first lot had no 

 trace of tubercula, and were paitly mature and partly immature to some extent ; 



