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



which is only two-jointed, the first joint very small and almost ring-like, the second about 

 as long as the normal fourth joint. 



8. HaJohates hai/aiins, n. sp. (PI. I. fig. 8). 



Oval, widest ahout ( ,? ) or behind ( $ ) the middle. Silvery grey above, paler on the 

 sides, and silvery white below. Antennae and legs blackish, with grey pubescence. Head 

 with an oblique, wedge-shaped, reddish-yellow spot on each side between the eyes, the. 

 .spots meeting by their narrower ends at the middle of the hind margin. 



^ . Antenna; at the base, prosternum (except the sides), front legs with coxfe and tro- 

 chanters, a spot at base and a smaller spot at apex of front femora ; middle and hind legs 

 with under side of coxae and trochanters, sternum with a somewhat obsolete longitu- 

 dinal posterior central line, a large triangular blotch on the under side of the midiUe 

 acetabula, a large spot < )n the outer side of all the acetabula, third genital segment aljove 

 with the margins, as well as the abdomen and genital segments below, more or less 

 yellowish ochreous. Second genital segment above reddish -brown, tips of the horns 

 l)lackish-ln-own. Antennae : third joint about four-fifths the length of the second, 

 fourth joint subequal in length to the second. Front tarsus : first joint about one-half 

 the length of the second. Middle tarsus : first joint quite tln-ee times the length of tlic 

 second. 



? . Similar in colour to the male, liut fr<jnt femora with a yellow-ochreous band above 

 from base to near apex, and another more distinct one on the inner under side. Under 

 side of the body mostly yellowish ochreous, sides of the head, and sides of the sternum, 

 especially anteriorly and on the front margin of the mesosternum, fuscous brown. 



$ . Lengtli 3"5, lu'cadtli r.'5, middle femur 4, hind femur 3'5 mm. 



$ . Length 3'o, lireadth 2'25, middle femur 4'5, hind femur 3'.j mm. 



Habitat. — Red Sea, near Aden (Dr. George Hay). 



S . Oval, widest lieliind the middle. SUvery grey above, more silvery on the sides, 

 and silvery white below. Antennae and legs fuscous black, with grey pubescence. Head 

 with two oljlique transverse, wedge-shaped reddish-yellow spots, which meet by their 

 naiTow ends at the middle of the hind margin. Sides of the head with longer silvery 

 white pubescence. Jointlet between the second and tlm-d joints of the antennae reddish- 

 yellow. Antennae with the base ; prosternum except the sides ; front legs with the coxa' 

 and trochanters, and a spot at base and a smaller spot at apex of femora ; middle and hind 

 legs wdth under sides of coxae and trochanters ; .mesosternum with a rather obsolete 

 posterior central longitudinal line, and a large triangular blotcli reaching from the apex 

 of the middle acetabula neirlv half-wav to the front miiroin of the mesosternum : ;ill the 



