BIHANG TILL K. SV. VET. AKAD. HANDLINGAK. BAND 4. N:0 8. 15 



process armed with a number of strong, arcuated spines (Pl. 

 III, fig. 25 and 26); the posterior angle of the chewing snr- 

 face of the process is occiipied by longer, sligther, straight spi- 

 nes (Pl. III, fig. 29). On its inner, adoral side this lamina 

 carries a small laminiform process, incised at its extremity 

 and bordered with short, delicate, unciliated hairs; possibly 

 this is to be regarded as a rudimental lamina. Between the 

 process and the outer lamina the maxillar palpe is attached; 

 it consists of two joints, the first of which is very small and 

 concealed from without by the lamina, and beset with two 

 bundles of short, fine hairs. The second joint is of mode- 

 rate length, linear and arcuated; the onter, convex margin 

 carries a number of long, slender hairs, ciliated on one side 

 (Pl. IV, fig. 56). In the rounded foremost end it carries a 

 number of hairs, feebly bent and a little swollen at the point, 

 thinly ciliated in the middle (Pl. III, fig. 41). 



The second pair of maxillce (Pl. I, fig. 4) is somewhat lar- 

 ger than the first. They are composed of a small basal-article 

 and two laminse. The inner lamina is far less than the outer 

 one and totally concealed by it, strongly curved, so as to form 

 almost a semi-cylinder; the margins are closely beset with 

 long, fine, minutely ciliated hairs (Pl. IV, fig. 72). The outer 

 lamina is more than thrice as large as the inner, its inner mar- 

 gin is strongly convex, closely beset with hairs like them on 

 the inner lamina; the outer margin is concave, fringed with 

 long, fine, smooth hairs (Pl. III, fig. 44). 



The maxillipeds are large and well developed. Issuing 

 from a basal support, arcuated at its anterior margin, they 

 cover like a lid the whole of the apparatus of mastication. 

 Each of them is composed of six joints. The first and se- 

 cond joints are so closely united, that their limits are indi- 

 cated only by the lines of attachment of their muscles. The 

 second joint is developed, at the inner angle, into a lamina, 

 which is longer than the first and second joints together. 



'The lamina (Pl. I, fig. 7) is along its entire length to- 

 tally separated from the corresponding lamina of the side. 

 Its inner margin is feebly incurved, almost straight, beset 

 with long hairs, that are bent in the point (Pl. III, fig. 41). 

 Its extremity is obtusely rounded and provided with strong, 

 straight, short-ciliated bristles (Pl. IV, fig. 69). The inner side 

 of its apical part moreover expands into a bluntly conical 



