58 THE VOYAGE OF H.M.S. CHALLENGER. 



Oval, widest behind the middle ( $ ), pale hoary ash grey above ; the visual spots at 

 the back of the head distinct, brownish-yellow, and united to a narrow line of the same 

 colour on the hind margin. Front femora, middle and hind legs black. Eyes clear, or 

 brown. Antennas with the basal halves of the joints, the prosternum, a central longitudinal 

 line (in the female) wide posteriorly and narrowed anteriorly on the mesosternum, the 

 ventral abdominal segments, a spot near the insertion of the legs, the front femora below 

 and more or less extensively at the base above, as well as all the coxas below, yellow. 



. Antennce (PL II. fig. 3, a.) about as long as three-fourths of the body, slender ; first 

 joint shorter than the other three taken together ; the second, third, and fourth of equal 

 length. 



Front femora stout ; front tarsus with the first joint about two-thirds the length of 

 the second. 



Middle legs: tibia about one-third longer than the tarsus; tarsus first joint two and 

 one-half times the length of the second. 



The larva has the plates hoary ash grey, the leathery part of the integuments brown, 

 the sides, under side, &c., yellow. 



Frauenfeld lays much stress upon the absence of a jointlet between the second and 

 third joints of the antennae. I have not seen adult specimens, but find that in the larvae 

 (some of Frauenf eld's own specimens, lent me by the Vienna Museum) this jointlet does 

 exist, and therefore, judging from what is the case in other species, suspect that it is 

 also present in the adult. 



HALOBATODES, n. g. 



Body oval or oblong. 



J-fead (with eyes) semicircular. 



Antenna' four-jointed, with two intermediate jointlets. 



Rostrum four-jointed, first and second joints very short, the latter ring-like ; third 



joint the longest. 

 Eyes large, situated at the back of the head and resting partly on the pronotum. 

 Ocelli, none. 



Prothorax, transverse, much broader than long, distinct from the mesothorax. 

 Mesothorax and metathorax together cylindrical, coalesced, the boundary between 



them scarcely distinguishable ; no scutellum nor scutellar process. 

 Elytra and wings wanting. 

 Front legs short, rather stout ; tibia with a straight or nearly straight process at the 



apex. Tarsus two-jointed, first joint very small, second joint with claws 



inserted beyond or about the middle. 



