188 G. E. BODKIN AND L. D. CLEARE, JNR. 



Order SIPHONAPTERA. 



Family Sarcopsyllidae. 



Dermatophilus penetrans, L. This well-known species is widely distributed over 

 the Colony. They are known locally as Jiggers or Chigoes. 



Family Pulicidae. 



Ctenocephalus felis, Bouche. Probably the commonest species on the coast-lands. 

 It is the common flea of domestic cats and dogs and occasionally attacks man. 



Order RHYNCHOTA. 



Family Cimicidae. 



Cimex hemiptera, F. {rotundatus,- Sign.). This species is the common bed-bug 

 •of British Guiana. 



Order ANOPLURA. 



Family Pediculidae. 



Pediculus capitis, de Geer. A parasite of Negros, East Indians, etc., in the Colony. 

 The colour varies slightly according to the host. 



Pedicidus humanus, L. This species is not nearly so frequently met with as the 

 former. It has been collected solely from East Indians. They are much lighter in 

 colour than P. capitis, being a whitish grey. They are known locally as " white 

 lice " and are said to be most voracious in their habits. 



Phthirius pubis, L. Is found as a parasite of all the different races inhabiting 

 British Guiana. 



Family Haematopinidae. 



Haematopinus eurysternus, Nitzsch. Collected from cattle on the coast-lands. 

 It is the common cattle louse. 



Haetnatopinus tuberculatus, Nitzsch. This species was collected from imported 

 Indian buffaloes, which apparently are the only hosts in British Guiana. 



Haematopinus suis, L. Very common on pigs. It was collected several times 

 •on these animals at the Georgetown Abattoir. 



Order MALLOPHAGA. 



This order is well represented in British Guiana. From the economic standpoint 

 the presence of ill-kept and overcrowded fowl-houses and pigeon-lofts and pens of 

 a like character for sheep and goats accounts largely for the abundance of these 

 parasites and for their wide distribution among domestic animals. 



Some species of birds in the wild state appear to be heavily infested with lice, 

 while others again are almost entirely exempt. 



Family Trichodectidae. 



Trichodectes pilosus, Gieb. On donkey {Equus asinus). 

 Trichodectes climax, N. On goat {Capra hircus). 

 Trichodectes sphaerocephalum, N. On sheep {Ovis aries). 



