7724 Insects. 



the nervures bounding the interno-inedial cell are orange, all the 

 others brown. 



The saw of the female, represented at fig. 5, is short and com- 

 pressed, as in the other Cladii, but is, on the other hand, but feebly 

 dentate, and the corneous plates have no serratures on their sides, so 

 that this instrument is only used as a saw, and not as a file, at the 

 same time. The ovipositor has much the same appearance as that of 

 the other Cladii. 



Note. — The author informs me that since the above was written a parasite, Ta- 

 china (Degeeria) parallela, has appeared from a number of these larvae — J. W. M. 



Capture of Spharius acaroides, Hydrochus carinatus, |-c., in the Fens. — While 

 waler-beelling in the Cambridge fens I bad the good fortune to find a colony of the 

 rare Hydrochus carinatus of Germar, in a small ditch about a hundred yards in length, 

 and afterwards took one at Barwell. In the SHme fen I also secured a small Co- 

 leopteron, in a dry peat-pit; quite new to me, and which Mr. Waierhouse has iden- 

 tified with Sphaerius acaroides of authors. I have no doubt that several specimens 

 might have been taken, but its minuteness rendered the operation difiicult in a gale of 

 wind, which has been the normal condition of the weather this year wherever I have 

 been. I also took Ilyobatis niiiricollis, Trichopteryx |iilicornis and Hypocytus dis- 

 cuideus, &c., from bundles of sedge, together with the regular fen inhabitants. The 

 waters were less crowded, and frequently their only tenants were Corixs, which were 

 very abundant, including, I think, fourteen or fifteen species, the only well-marked 

 ones being C. coleoptrata and one other. Sigara minula was also abundant.— Cr. R. 

 Crotch ; Uphill House, Weston-super-Mare, August 8, 1861. 



On the Metamorphoses of a Coccus found upon Oranges.* — If the external surface 

 of almost any of the sweet oranges be only cursorily examined, it will be found more 

 or less spotted with small scales, the shields of a Coccus, or scale insect ; they are 

 adherent to the rind of the orange, but can easily be detached ; and, on turning one 

 of the larger ones over, it will be found, on examination under a low power, to present, 

 as the most striking feature, a large accumulation of eggs lying beneath a cottony 

 secretion ; very frequently these eggs are in the process of hatching, and under such 

 circumstances we have the insect in its larva state. The body is white, oval, and very 

 flat : there are two antennce proceeding Iroui umlciueath ; they are about one-fourth 

 the length of the body, rather hairy, and of eight or nine joints, two very small light 

 pink ocelli, or simple eyes, occur one on each side, at the very edge of the body, and 

 about where tbfe long curves of the oval commence ; considerably below the antennae 

 is a proboscis, a long and apparently horny tube, proceeding from a conical base. 

 These, with the exception of a few isolated hairs, are the only external organs of the 

 head that are apparent. The legs are six in number, each consisting of, I think, four 

 members ; the terminal ones being provided with a hook, and two or more very small 



* Read at the Microscopical Society of London, March i.}, 1861. 



