438 



BUEEAU OF AT^IMAL INDUSTRY. 



collected from the horse in Miyasaki (Japan), and in that of the Museum of Paris by 

 250 females and 6 males from Mauritius, and probably taken from cattle (for the col- 

 lection includes also 3 large gravid females of Hyalomma eegyptium) ; further, 22 

 females and 1 male from Cayenne (where the peculiar characteristics of the variety 

 are only slightly marked). I also thus determine a male and a female originally 

 from the Senegal (coll. A. Railliet), and a male collected in Borneo from the deer 

 (coll. R. Blanchard), Finally, I consider as beloaiging to this variety Hsemaphy sails 

 micropla Can., found in South Chaco (Paraguay), on an undetermined mammal 

 (Canestrini), and under the bark of the trees in Pio-Apa (Paraguay), by A, 

 Balzan. The variety is noticeable because of the strength of the chitinous portions 

 and especially because of the caudiform appendage of the male. The essential char- 

 acteristics are the following: 



Female. — The projections on the posterior margin of coxae I more marked, just 

 outlined on pair II, less and less marked in the following pairs; in some cases (in 

 the majority of specimens from Japan) five rows of denticles on each half of the 

 hypostome. 



Male. — Color darker. Eyes a little more distinct. Posterior margin of the bodj 

 not festooned, but prolonged by a conical chitinous point in the direction of the 

 median furrow, which ends a little in advance of the point, and is deeper [than that 

 in the type]. Adanal shields more chitinous, dark brown, projecting. Teeth on the 

 posterior margin of coxae I much stronger. Hairs very much longer and very much 

 more abundant.^ 



We have no specimens of this species and Canestrini's description 

 is not accessible to us, hence we are not in a position to express a defi- 

 nite opinion concerning it. It may, however, be noted that a caudate 

 form with eight rows of denticles on the hypostome {Boophilus aus- 

 tralis) occurs in Venezuela and Argentina; also that Birula points out 

 the resemblance of his Bh. calcaratus^ which has eight rows of den- 

 ticles, to Canestrini's Bh. microjplus. The possibility of the specific 



^ Je rattache aussi a Rhipiceplialus annulatus, a titre de variete {Rh. annulatus cau- 

 datus), une forme qui est representee dans ma collection par 23 femelles et 2 males 

 recueillis sur le Cheval a Miyasaki (Japon) , et dans celle du Museum de Paris, par 

 250 femelles et 6 males provenant de File de France et probablement pris sur le 

 Boeuf ( car le lot comprend encore trois grosses femelles pleines de Hyalomma xgyptium) , 

 plus 22 femelles et 1 male provenant de Cayenne (ou les particularites de la variety 

 sont peu accentuees). Je dispose aussi d'un male et d'une femelle originaires du 

 Senegal (collection A. Railliet), et d'un male pris a Borneo sur un Cerf (coll. R. 

 Blanchard). Enfin, je considere comme appartenant a cette variete Hsemaphysalis 

 micropla Can., trouve au Chaco meridional (Paraguay), sur un Mammifere indeter- 

 mine (Canestrini), et sous I'ecorce des arbres a Rio-Apa (Paraguay), par A. Balzan. 

 La variete se fait remarquer par le renforcement des parties chitineuses et surtout 

 I'appendice caudiforme du male. Les particularites essentielles sont les suivantes: 



Femelle. — Saillies du bord posterieur des hanches de la premiere paire mieux 

 marquees, esquissees a la deuxieme paire, de moins en moins aux suivantes; parfois 

 (dans la plupart des specimens du Japon), cinq files de dents sur chaque moitie de 

 r hypostome. 



Mdle. — Teinte plus foncee. Yeux un peu plus apparents. Bord posterieur du 

 corps non festonne, mais prolonge par une pointe conique, chitineuse, dans la direc- 

 tion du sillon median, qui s'arrete un peu en avant d'elle et est plus profond. 

 Ecussons adanaux plus chitineux, brun fonce, saillants. Dents du bord posterieur 

 des hanches de la premiere paire bien plus fortes. Polls bien plus longs et bjen plus 

 abondants. 



