AN ATTEMPT 



TO REVISE THE FAMILY « LINGUALIDAE » 



BY 



A. E. SHIPLiEY 



Fellow and Tutor of Christ's Collège, Cambridge 

 Lecturcr on the Advanced Morphology of the Invertebrata in thc University. 



In tryingtoidentify some STpecimens oiPentastoma {Poroccphalus) 

 sent home by Mr Willey f rom New Britain, I hâve found the great- 

 est difTiculty in arriving at any clear idea of the existing species 

 of the family. In spite of the fact that the number of species is 

 small there is a very considérable literatiire dealing with thèse 

 parasites. Stiles (1) in hispaperon the structure and development 

 of Pentastoma proboscideum enumerates one hundred and forty- 

 three memoirs or works on the différent members of the group. 

 Many of thèse papers are unfortunately not to be found in our 

 libraries, especially is this the case with the journals of local Vete- 

 rinary Societies, but the more important memoirs I hâve been able 

 to see. 



I hâve also examined the collections in the British Muséum, in 

 the Muséum d'Histoire naturelle, Jardin des Plantes, at Paris and 

 in the k. k. Naturhistorisches Hofmuseum at Vienna, in which are 

 the collections of Diesing. I wish to express my thanks to the 

 authorities of thèse Muséums for their courtesy in allowing me to 

 inspect the spécimens under their charge. 



The following list is based mainly on Leuckart's Monograph and 

 unless otherwise stated I hâve quoted the latin diagnoses of the 

 species given by him. In one or two cases I hâve thought species 

 recognized by him as distinct, were uot so, and I hâve left out of 

 account the species P. colnbri lineati mentioned by Schubart (2) as 

 its characters are unknown. In some cases where Leuckart's spe- 

 cies hâve been anticipated by earlier writers, e.g., P. armillatus and 



(1) Zeitsclir. fiir wiss. ZooL, LU, 1891, p. 8o. 

 {■>) Z('il>ickr. fur wiss. ZooL, IV, p. 117. 



