HALOBATES. 



187 



tarsi fringed with loug hairs, tarsi two-jointed ; posterior legs 

 with one-jointed tarsi. 



Oceanic insects, often fonnd at great distances from land. 



981. Halobates fraiienfeldanus, Buch. White, Rep. Voy. ' C'huUenyer' 



Zool. vii, p. 57, pi. ii, f. 3 (1883) ; Will. Wiea. ent. Zeit. v, p. 232 



(188(5). 

 Halobates micans, part., Fraueiif. Ver/t. z.-b. G'es. Wien, xvii, p. 458 



(1867). ' 

 Halobates fiaviveiitris, Frauenf. loc. cif. p. 459, t. xii, ft. 3, 4, 7-9, 



/lec Esch. 



" Oval, widest behind the middle ( § ). Pale hoary ash-grey 

 above ; head with a brownish-yellow spot on each side posteriorly, 



united to a narrow line of 

 the same colonr on the hind 

 margin ; antennae with the 

 basal halves of the joints, 

 prosternum, mesosternum 

 with a central longitudinal 

 line broadest behind and 

 narrower in front (absent 

 in the (S ), ventral segments 

 of the abdomen, a spot near 

 the insertion of each of the 

 legs, the front femora below, 

 and a more or less extensive 

 spot at the base above, as 

 well as the underside of the 

 coxae of the middle and hind 

 legs yellow ; front femora 

 black above ; second, third 

 and fourth joints of antennae 

 equal in length ; I'ront tarsus 

 with first joint about one- 

 third shorter than the second joint ; middle tarsus with first joint 

 two and one-half times the length of the second." {Buch. WJiite.) 

 J . Length 4-1 ; breadth 1-9 ; middle femur o-l millim. 

 9 4-2 • 2-4 • 5 



Hub. Indian Ocean, near the A^icobar Islands (Frauenf eld). 

 Buchanan White had, like myself, not seen the species ; he had 

 carefully compiled the diagnosis and description from Frauenfeld's 

 paper, and I have copied AVhite above. 



982, Halobates micans, Fuc/i. EntomograpMen. i, p. 107, Taf. ii, f. 3 



(1822) ; Frauenf. Terh. z.-h. Ges. Wien, xvii, p. 458, Taf. xii, f. 5 

 (1867) ; Dahl. Enjeh. der Plankton Exp. ii, p. 4, ft". 1,2, 3, G (1893) ; 

 Buck. White, Rep. Voy. ' Cliallenf/er' Zool. vii, p. 43, pi. i, f. 2 

 (1883). 



This is another species I have not seen. Buchanan White, who 

 was in the same position, drew up the follo\\ ing description from 



Fig. 134. — Halobates fruuc))fcldanas. 



