268 DE. J. Or. DE MAN ON THE PODOPHTHALMOTJS 



however, sometimes presents a trace of a sliglit notcli. Tbis 

 variety, whicli occurs in two specimens in the collection, has 

 been figured by Heller, Z. c. pi. x. fig. 2. 



In very large specimens the interocular portion of the rostrum 

 appears more distinctly carinate than in younger individuals. 



The largest individual of the collection is 58 millim. long from 

 the tip of the rostrum to the end of the terminal segment, and 

 its larger hand is precisely half as long, measuring 29 millim. 

 In this specimen the carpopodite of the second leg measures 

 14 millim., whereas the two first joints have about the same 

 length. 



The other specimens are mostly of medium size, measuring 

 30-35 millim., but two of them are only 10 millim. long. 



A. JEdwardsii not only inhabits the whole Indo-Pacific, but 

 also a part of the Atlantic region. It has been observed in the 

 Hed Sea, the whole Indian and Pacific Ocean to the west coast 

 of America, and on the eastern coast of this continent from 

 North Carolina to the Abrolhos (Brazil). 



150. Alphetjs Hippothoe*, n. sp. (PI. XYII. figs. 1-5.) 



Three adult specimens of this interesting form were collected, 

 a male and an ova-bearing female at Sullivan Island, and another 

 male in King Island Bay. 



A. Sippotlioe is most closely allied to A. parvirostris, Dana, 

 and to A. lEdwardsii, Aud., in its general appearance and in the 

 structure of its anterior legs ; but it may be readily distin- 

 guished from the former by the basal joint of the outer antennae 

 presenting no trace of an external spine, and from A. Edwardsii 

 by the meropodites of the legs of the third and fourth pairs 

 being armed with a short acute spine at the distal ends of their 

 inferior margins. 



The body closely resembles that of A. Edwardsii, Aud., the 

 common Indian species. The rostrum is short, acute, and reaches 

 a little beyond the middle of the first joint of the peduncle of 

 the upper antennse. As in A. Edwardsii, it arises from the front 

 margin of the carapace ; the interocular portion, however, is 

 more distinctly carinate than in specimens of A. JEdioardsii of 

 the same size, being much compressed and separated by rather 

 deep grooves from the orbits, which are unarmed. Tbis inter- 



* Hippothoe, one of the Nereids. 



