6G THE CANADIAN ENTOMOLOGIST. 



Pulex kerguelensis, Tschb. 



1880. Taschenberg, Die Flohe, p. 67. 



This is a very unique and well-marked species. Taschenberg gives 

 the proportional lengths of tarsal joints as follows : — On anterior legs first 

 equals 5 ; on middle legs second equals 5 and equals 3 and 4 together, 

 first is somewhat longer ; on posterior legs first is a third longer than 2, 

 3 and 4 together somewhat shorter than 2, and 5 a little longer than 3. 

 Length of male is given as 2 mm., of female, 3 to 4.5 mm. The four 

 known examples were collected on the Kerguelen Islands by Mr. Eaton, 

 from Pelecanoides urmatrix, Gmel , and sent to Ritsema for determination. 



Pulex giobiceps, Tschb. 



1840. Motschulsky, Bull. Soc. Imp, de Moscou, p. 170. (P. vulpes.) 



1880. Taschenberg, Die Flohe, p. 66. (P. giobiceps.) 



A large flea, well separated by its elongated body and proportionally 

 very small head, standing between kerguelensis and irritans with its allies. 

 Taschenberg says of the maxillary palpi : '•' their thick joints of almost equal 

 length." However, in specimens received from him, the second joint in 

 the female is less than three-fourths of the fourth in lengtli. He further 

 says the antennal grooves are open, and the colour is darkish-brown, 

 yellowish-gray posteriorly in mature females. The labial palpi in the 

 specimens received from Dr. Taschenberg are certainly 5Jointed, the 

 sutures between the several joints being equally distinct. In these speci- 

 mens I find the comparative lengths of tarsal joints as follows: — In anterior 

 legs the fifth joint is about as long as i and 2 together, and as long as 2 

 and 3 together ; in middle legs the fifth joint is three times 4 and longer 

 than 2 ; in posterior legs the fifth joint is shorter than 3 and 4 together, 

 and about two-thirds of i, while the second is about twice 4 and 

 less than 5. The following records have been made of its occurrence : 

 From Canis vulpes (Halle, Taschenberg, and Holland, Ritsema), from 

 Meles taxus (Zool. Gardens at Rotterdam), from Canis, sp. (Russia, 

 Motschulsky). 

 Pulex pallidus, Taschb. 



1880. Taschenberg, Die Flohe, p. 65. 



I have before me a large series of specimens sent to me as a new 

 species by Dr. Taschenberg. They were taken on Mus albipes, in the 

 Island of Socotra. They coincide in every respect with the original 

 description and illustrations of pallidus, and must be referred to that 



