44 



compared with that of the insect itself. On opening one of these eggs, in order to 

 ascertain whether the larva might not be enclosed therein, as would be the case were 

 Dr. Rodschied's opinions correct, I found nothing but an immense number of ex- 

 ceedingly minute globular masses of different sizes, as represented in my figure. — 

 Now as these jiggers had in all probability been extracted at the time considered 

 most fit to prevent the extension of the injury to the patient's foot by the deposition 

 of the eggs within the wound, it seems to me evident that these large sized eggs were 

 in a fit state for deposition, and that consequently the larvse are not developed in the 

 abdomen of the female, like those of the Hippohoscidce, but within the wound ; the 

 immense quantity of the eggs also is in opposition to such an opinion. If this be the 

 case, the larvae would continue to feed within the flesh, and they might either bur- 

 row out when full grown, or might undergo their transfonnations in the foot, escap- 

 ing only when arrived at the perfect state. The circumstances connected with the 

 wounds produced by the insect when left untouched, have not been related ; they 

 would, of course, supply a solution to some of the questions respecting which we are 

 still in doubt. But it must be evident that the ordinary habit of the jigger cannot, 

 from its great numbers, be that of burrowing into the human foot. 



" On each side of the head is a black and circular space, evidently an eye, but ap- 

 pearing to be of a simple construction, like an ocellus, and behind this is a space or 

 impression, within which the antenna was evidently placed, but of which I was una- 

 ble to ascertain the structure. The six legs are formed like those of the common flea, 

 the tarsi five-jointed and long, with long and simple ungues. The proboscis is very 

 long, acute and horny, apparently composed of a single inarticulated piece ; but on 

 examining this, it divided into three pieces of horny texture, one very slender and ra- 

 ther curved at the tip, representing the tongue, and the two others identical in struc- 

 ture, flat, broader, less acute at the tip, with the sides obliquely channelled or guttered ; 

 these are the mandibles. Of the maxillae T could not discover any trace, although 

 the maxillary palpi are very distinct and four-jointed, the second joint being the long- 

 est. Of the labium and labial palpi, which in Pulex are very conspicuous, I also 

 obtained no other trace than a small and slender piece of membrane observed behind 

 the tongue, and which I am by no means sure formed part of the mouth.* Thus it 

 is evident that the elongation of the horny mandibles and tongue, is obtained at the 

 expense of the labium, labial palpi and maxillae. The basal joint of the legs is very 

 large and j^late-like, as in Pulex, and the abdomen, when distended, exhibits no trace 

 of articulation, being entirely membranous." — p. 202. 



XLI. — Description of a ininute Crustaceous Animal from the Island of 

 Mauritius. By Robert Templeton, Esq., R.A. 



The author has named this little animal Zeuxo IVestwoodiana ; 

 and after describing it with elaborate care and minuteness, he adds 

 the following notice of its affinities. 



" This singular little animal, which I have iusci-ibed to my friend Mr. Westwood, 

 would seem to take precedence of all the genera in the division Amphipoda of La- 

 treille, to which I believe it correctly belongs. It resembles, however, very much in 



" * Both Messrs. Duges and Guerin have also detected this organ as forming part 

 of the mouth, so that it must evidently represent the labium." 



