i897-] CarpbnTER. — The Collembola oj Mitchehtown Cave. 229 



differs from the latter in the scantiness of its thoracic tuft of clubbed 

 hairs and the absence of any silvery reflection from the body. Unfortu- 

 nately Lubbock gives no distinctive structural characters except the 

 relative length of the third antennal segment. 



Tcmplctonia cavernlcola (Carpenter). 

 PI. 2, figs. 2-5. 



Sinella cavernicola, Carpenter (i). 



do., (in part), Jameson (2). 



As mentioned above, the discovery that this species is scaled (fig. 3) 

 necessitates its removal from the genus Sinella. The ringed terminal 

 segment of the antenna and the structure of the feet leave no doubt that 

 it is a Templetonia^ and closely allied to the type species T. crystallina 

 (MuUer), which is widespread throughout Europe. 



In his figures of T. crystallina {nitida, Tempi.), Tullberg (12) called 

 attention to the remarkable deformation of the antennse in certain speci- 

 mens which had presumably been mutilated. The Mitchelstown species 

 gives excellent illustration of this phenomenon. One of the individuals 

 collected by Mr. Jameson had one normal five-segmented antenna ; the 

 other antenna had but three segments (fig. i). Other specimens possessed 

 antennae with four segments (fig. 2). It is interesting to notice that the 

 terminal segment i.s in all cases the longest and surrounded with rings 

 of clubbed hairs •, while in antennse with less than five segments, it is 

 proportionally longer than in those where the normal number is 

 developed. Lubbock (4) calls attention to a similar phenomenon in 

 Tomocerus, 



In Templetonia crystallina there is a single ocellus on either side of the 

 head situated on a pigmented eye-patch. In T. cavernicola no ocelli can 

 be seen, but there are vestiges of the eye-patches in a few granules of 

 brown pigment (figs. 1,2). The feet of T. cavernicola closely resemble 

 those of T. nitida, but the lower claw is more lanceolate and less linear in 

 the cave-species. In my former description of this insect, I stated that 

 the feet were destitute of clubbed hairs ; I now find that while those of the 

 second and hind pairs are furnished with long hairs ending in a fine point 

 (fig. 5), the long hair on each front foot terminates in a very slender club 



(fig. 4)- 



A species of Templetonia^ T. major, has been recorded by Moniez (5, 7) 



from mines and wells in the north of France, as well as under stones 



above ground, it also occurs in the Azores (6). It is larger than the other 



species of the genus and the upper claw of the foot has two teeth. 



FAWIILY LIPURIDVE. 

 Achorutes armatus (Nicolet). 

 Mr. Jameson found three or four specimens of this species. In 

 examples which occur above ground the surface of the body is, for the 

 most part, covered with pigment. But in these Mitchelstown insects the 

 amount of pigment is reduced, appearing in scattered spots on a white 

 ground. 



