HmMADIPSINM 



687 



Limnatis nilotica Savigny, 1820. This leech is 8 to 10 centimetres in length, 

 and is common in North Africa, the Canaries, South Europe, and Asia Minor, 

 while it, or some other species, is found on the West Coast of Africa. 



Limnatis mysomelas Serulias and Virey, 1829, is found in Senegambia, and 

 L. granulosa Savigny, 1820, in India. 



These leeches are of importance, because they are apt to get into the nose, 

 naso-pharynx, pharynx, and larynx of persons drinking at pools of water, 

 and to cause serious symptoms. Other species are L. africana R. Blanchard in 

 Senegal and the Congo, L. maculosa Grube, 1859, in Singapore, L. mysomelas 

 in Senegal, and L. granulosa in India. 



Hirudinaria Whitman, 1886. 



Hirudininae with the sexual pores separated by several rings. Acetabulum 

 very large. 



H. javanica Wahlberg, 1855. In Batavia, Sumatra, and Burma. 



Limnobdella R. Blanchard. 

 Hirudininae with 103 to 104 rings; Jaws without papillae. The 6th somite 

 with three rings, the 23rd with five rings. 



L. grandis R. Blanchard. Timor, Sumatra, and Ceylon. 

 L. australis Besisto, 1859. Sydney and New South Wales. 

 L. R. Blanchard. Mexico. 



Macrobdella Verrill, 1872. 



Hirudininae, jaws without sensory papillae; teeth not numerous; 103 body 

 rings. Both genital openings on the nth somite. 

 M. sestertia Whitman, 1886. America. 



Whitmania R. Blanchard, 1884. 



Hirudininae with 105 to 107 rings; 6th segment with five rings; 23rd has 

 always more than three rings. Teeth more or less rudimentary. 



W. ferox R. Blanchard, 1896. London Zoological Gardens and in Asia. 



Subfamily H^madipsin^ R. Blanchard, 1894. 



Gnathobdelhdae, small leeches, living on land, with ten eyes, and no eyeless 

 ring between the 3rd and 4th eyes. The three last body somites (twenty- 

 three to twenty-six) with only one ring each. Dentition simple and complete. 



Remarks. — The Haemadipsinae were monographed by Blanchard in July, 

 19 1 7, in his usual masterly style. 



Type Genus. — Hamadipsa Tennent, 1861. 



Hsemadipsa Tennent, 1861. 



Synonyms. — Hamopis Schmarda, 1861; Chthonobdella Grube, 1865. 



Haemadipsinae, terrestrial in habit, 2 to 3 centimetres in length; sub- 

 cylindrical, tapering slightly forwards, cephalic lobe, rounded when at rest, 

 but pointed in extension ; acetabulum moderately large, round, or oval, 

 centrally attached, separated from the body only by a feeble constriction. 



Eyes in five pairs, the rings bearing the 3rd and 4th pair, not separated, by 

 an intervening ring, the rings bearing the 4th and 5th pairs, separated by 

 two rings, CKsophagus with three plications — one dorsal and two latero- 

 ventral. The three maxillae covered with teeth, which increase in size towards 

 the converging anterior ends of the jaws. Clitellum includes three somites 

 and fifteen rings. Genital orifices separated by five rings; nephridial pores at 

 the margin of the body, the last pair opening in the constriction between the 

 body and the acetabulum. 



Remarks.— The land leeches of Ceylon were separated from the genus 

 Hirudo by Tennent in 1861, under the name of Hcsmadipsa ; and those of 



