586 Transactions of the Society, 



this — " Addendum. — Since the foregoing was sent to press I have 

 found a further species of Henlea, which agrees in so many- 

 particulars with H. tenella Eisen, mentioned on p. 467, that I 

 record it provisionally under that name. There are 3 dorsal and 

 4-5 ventral setae. The oesophagus widens in segment 8, and the 

 nerve ganglia are enlarged in front. Eisen's description does not 

 allude to the presence of a row of vacuoles or glandular cells, such 

 as I find in each segment just in front of the setse. The brain is 

 mobile, but agrees with Eisen's notes." 



British Record. — Acresford, near Ashby-de-la-Zouch, November 

 28, 1911. 



10. Henlea arenicola Friend. 



Length 12-15 mm. Segments about 50-55. Adult at mid- 

 winter. Stout, somewhat opaque, epidermis with many glandular 

 cells. Girdle with minute gland cells, much smaller than those of 

 the epidermis. Head small, and brain also small, about as long 

 as broad. Nerve chord enlarged in front. Setse usually 5-6, in 



Iftt. 



ror€^4/3 



Fig, 107. — Spermatheca of H. arenicola Friend. 

 Amp. Ampulla ; Int. Intestine. 



front ventrally, 3-4 dorsally or posteriorly. No salivaries could 

 be found. Large pores and atrial gland (? the penis of Eisen) on 

 the girdle segment, but no setae either dorsally or ventrally. Large 

 coelomic corpuscles like the typical form. Small oil cells in 

 intestine with chloragogen cells. No oesophageal glands. Dorsal 

 vessel arising in 8/9. The spermathecae consist of an ampulla 

 attached to the intestine by a short duct. The length of the duct 

 seems to vary somewhat (fig. 107), but there are no glands at the 

 opening in 4/5. 



British Record.. — Hastings, near Bopeep Station, December 21, 

 1911. 



