HEMIPTERA 369 



Berg, it seems to approach these. In size and color, it more nearly 

 resembles the latter, but differs in the arrangement of the spots on the 

 corium and membrane, and in having costal margins entirely yellow. 



Family GERRID^. 



16. Halobates Wuellersdorffi, Frauenfeld. 



Halobates Wuellersdorffi, YKKV^-^-p^\.Ti, Verb. Zool. Ges., v, 17, p. 418. — B. 

 White, Challenger Exp. Zool., v, vii, p. 40. 



Seven specimens, three males and four females, were taken between 

 Clarion and Clipperton Islands, November 2, 189S. Other specimens 

 were previously found near James Island, Galapagos Islands (Proc. 

 U. S. Nat. Museum, v, xni, p. 194), and in the North Pacific near 

 the California coast. In this lot of Halobates v^iis one female, which 

 carried a few eggs on her under side, attached to the last segments of 

 the abdomen. This bug must have been captured in the very act of 

 egg-laying, as one egg is protruding from the ovipositor. The fol- 

 lowing notes on the subject of egg-laying are from Professor Buchanan 

 White in his report on the Pelagic Hemiptera (Challenger Exp. 

 Zool., V, VII, p. 71). He says: " No observations have been made 

 as to when and where the eggs are deposited. The statement, that 

 the female carries them about, attached to the abdomen, after they 

 have been extruded, Pi'ofessor Moseley informs me is a mistake." 



Dr. E. Witlaczil in his treatise on Halobates (Wiener Ent. Zeit., 

 Vol. V, p. 333, 1856) mentions, that, during the voyage of the Pisani 

 a feather of a bird was fished out from the ocean, off the southwest 

 coast of the Galapagos Islands, entirely covered with eggs of a reddish 

 color. Doctor Witlaczil prepared them for microscopical examina- 

 tion, and could distinctly observe the embryos of a Halobates. 



17. Halobates sp..? 

 Albemarle, January 3, 1899. 



Five specimens, four females and one male. Doubtless a new 

 species. The material, however, is in such condition that it can not 

 be satisfactorily described. The middle tarsi of all the specimens are 

 more or less damaged. This oceanic bug closely resembles Halobates 

 sericeus Eschscholtz in shape of body and in color; also to Halobates 

 hayanus B. White in form of antennae and front tarsi. But it re- 

 sembles more closely Halobates gennanus B. White in the structure 

 and color of the abdominal and genital segments, and differs only in 

 the terminal joints of antennae, of which the third and fourth are 

 nearly equal, and the second a little longer than the fourth, whilst in 



