136 



responsible for "summer sores" and the lesions found in 

 Southern Australia. 



A review of the literature bearing upon these two diseases 

 reveals the fact that these granulomata possess characteristics 

 that are common to habronemic granulomata. They possess 

 such a striking resemblance to habronemic granulomata that 

 it is probable they possess a similar etiology. 



E. Nomenclature. 



These granulomata have been known for many years 

 under various local names. The cause of the affection having 

 been determined, it became necessary to introduce a more 

 specific designation. Railliet introduced the term cutaneous 

 habronemiasis. He says, "Le parasite de la dermatite granu- 

 leuse vermineuse est un embryon ou une larve d'Habronema, 

 qu'il est rationnel de rapporter a l'une des trois especes de ce 

 genre vivant dans restomac du cheval. L'affection merite done 

 d'etre designee sous le nom d' habronemose cutanee." 



The disease Habronemiasia is an infection of the stomach 

 of the horse by one or all three species of the genus Habronema. 

 The infection consists of the development of larvae into adults 

 which become associated with the mucous lining of the stomach 

 or with the submucosa, and this term would include any other 

 phenonema incidental to the infection. By analogy, the term 

 cutaneous habronemiasis should mean the development of 

 larvae into adults in the cutaneous or subcutaneous tissues 

 where a true parasitism would develop. An infection of this 

 nature does not appear to occur, and certainly it does not occur 

 in the granulomatous conditions that have been discussed. If 

 Railliet's theory that the embryos of Habronema develop 

 through larval stages in the cutaneous tissues be proved, it is 

 doubtful even then that the designation cutaneous habron- 

 emiasis would be correct. 



Ankyostomiasis is the disease caused by species of the 

 genus Ankylostoma. The disease is a toxaemia resulting in a 

 progressive anaemia, and is due to an infection of the intestine 

 by the worm. When the larvae of these worms enter the skin 

 they may give rise to a dermatitis. It would not appear 

 to be correct to name this dermatitis cutaneous anky- 

 lostomiasis. 



Following the same lines of reasoning it does not appear 

 to be correct to give the designation cutaneous habronemiasis 

 to the granulomatous condition produced in the external 

 mucous membranes and cutaneous tissues by the larvae of the 

 genus Habronema. 



The term habronemic granuloma has been used by the 

 present writer as the designation of the granulomatous 



