^8 



(Fig. 16). The form in Mysore answers to the descrip- 

 tion given by Fabricius but there are variations as great 

 in this species as in P. chinensis. In the typical form as 

 described by Fabricius the elytra are shorter than in P. 

 chinensis, the portion of the abdomen exposed is greater and 

 has a black suffusion only interrupted by a median white 

 line. On each elytron there is a black spot in the middle 

 which is tipped behind more or less conspicuously with 

 white. The scutellum is white. All the markings, white 

 as well as black, may be absent or the black may be present 

 in varying depthp. So too with the black coloration of 

 the pygidiiim and the median white line, both of which may 

 be wanting. Even the white spot on the scutellum may be 

 inconspicuous. Owing to the absence of these markings, 

 some of the forms are with difficulty identified as B. analis. 

 There can be no doubt, however, of the range in variation in 

 the forms as most of these have been noted in the progeny 

 from the same parents. 



The form attacks cow-pea by preference but may attack 

 other pulses also. There is little to be noted in the life history 

 which is practically identical with that of P. chinensis. 



Fig. 17. — Bruchus quadrimaculatus. 



B. quadrimaculatus, (Fig. 17).— This form is easily dis- 

 tinguished by the markings on the elytra which together 

 assume the shape of X in white and by its slightly larger size. 

 The space enclosed by each of the limbs of the X is dark 

 brown. Chittenden describes the species as follows : — 



*' The ground colour is black, with black, grey and white 

 pubescence. The antennae are serrate and not pectinate in 

 the male. The basal lobe of the thorax is marked with white 

 pubescence only. The elytra are longer and the grey and 



