l88 THE BRITISH NATURALIST. [September 



distinct shoulders, those of the female are nearly globular. The 

 following species have the elytra more narrowed towards the apex in 

 the male : Dascilltis cervinus, Toxotus meridianus, Strangalia aundenta and 

 armata, the British species of Granimoptem and Saperda, Donacia lemncs. 

 and sagittaria, and many species of the genus Tnchopteryx. The 

 female of Choleva angustata (Cox gives the male which is certainly a 

 mistake) has a sharp spine at the apex of each elytron ; Bvyaxis 

 sangninea has each elytron produced into a broad lobe in the male ; 

 and the males of Malachius mavginellus and the three British species of 

 Anthocoiniis^ \.oget\\(ix with the same sex oi Ax inofarsiis pulicarius Riid 

 ntficollis have the apex of the wing-covers curiously crushed in or 

 doubled under, and frequently furnished with black lobes or appendages. 

 There are a few instances of the presence of ridges or tubercles on the 

 elytra of one sex only, such as the elevation of the suture at its hinder 

 end in the males of Homalota cinnamo mea and Silusa yubiginosa, the 

 elevated ridge lying parallel to the suture on the hinder part of the 

 elytra of the males of all the British species of Bolitochava and of 

 Homalota hepatica, the raised fold at the shoulders of the female 

 Prasocuris marginella, the blunt tubercle near the base of each elytron 

 in the male Homalota circellaris and Sipalia riificollis, a similar tubercle 

 near the apex in the male Brachida iiotha, and the fold near the apex 

 of each elytron in the female Hydvopoms latus. The sulcation of the 

 elytra in the females of Dysticiis and Acilius has been already referred 

 to, but we may note here the curious hollowing out of the apex of each 

 wing-cover in the males of Xylocleptes bispinus, Pityophthorus hidens and 

 quadridens, which depression is bounded externally by a long 

 triangular tooth, represented in the female by a small tubercle only. 

 Only two British beetles are entirely without elytra in one sex, viz..: 

 the glowworm f Lampyns noctiliica ) and Driliis flavescens, in both of 

 which the female is a long grub-like creature, generally much longer 

 than the male, entirely without wings and consequently having all the 

 abdominal segments exposed. The near ally of the glowworm 

 (Phosphreims JiemipterusJ has the female also destitute of wings and 

 elytra, while the male, unlike the male glowworm which has both 

 well developed, has very short w'ing-covers without any wings to 

 protect. 



(Tu be continued.) 



SPRING COLLECTING AT BIARRITZ, 



BY MTSS K. M. HINCHLIFF. 



As the last few years have seen two most excellent works on 

 European Diurni, it is presumed that greater interest is now taken by 

 the Britisli collector m this most interesting branch of Entomology. 



