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two plates are very small and in this specimen there is a sharp tooth between each of the 

 three posterior pairs of legs, the tooth between the 4"^ pair being the largest. 



Like the males, the females are also of a smaller size than the female from Stat. 128, 

 described above. In the largest specimen, in which the carapace with the rostrum is 6,5 mm. 

 lono-, the thelycum resembles that of the female from Stat. 128, but the upstanding plate is 

 barely emarginate and the two laternl angles of the anterior margin are hardly dentiform. The 

 four other females are still younger, the carapace with the rostrum of the largest specimen 

 being 5,3 mm. long; in these individuals that apparently belong to the same species, because 

 they show even quite the same violet spots on the maxillipeds and on the two first legs as the 

 female from Stat. 128, one observes between the s''^ and 4"' pairs of legs a large, oval plate, 

 longer than broad and slightly convex above, instead of the upstanding and horizontal plates 

 in the larger females. These four females show a somewhat darker colour than the six other 

 specimens from this Station, they were preserved in another tube. 



The female from Stat. 141 is very young, the carapace with the rostrum being 4,2 mm. 

 long. The corneae of the eye-stalks are of a much paler colour than in the other specimens, 

 but the speek of black pigment is much larger, situated on the middle of the outer border of 

 the peduncle, while on the right stalk the speek is angular, reaching even to the middle of 

 the upper surface. 



Remarks. Geiin. Bouvicri Kemp (in: Proc. Zool. Soc. London, 1909, p. 726, PI. LXXIV', 

 Fig. I — 4 and PI. LXXV, Fig. 6 and 7) is apparently very closely related, if not identical 

 with this species. The thelycum has, however, a different form and the upstanding plate or 

 tubercle between the i^^ legs is not described. The 2"'! joint of the antennular peduncle should 

 be about as long as the s'*^. In the 2'^'^ pair of legs the dactylus has the same length as the 

 palm and the whole chela should be a little shorter than the carpus. The male of this species 

 is unknown; the three females were captured at 2100 fathoms near Manila and at iioofathoms 

 North of New Guinea, they were 26 — 28 mm. long. 



Hemipenaeus Sp. Bate. 



This genus, in the definition hrst given to it by Professor Alcock, is represented by 7 

 species, 3 of which are characterized by a large spine with which the carina of the 3'''^ abdominal 

 tergum is armed. Hemip. spinidorsalis Sp. Bate is the most widely-ranging form, occurring 

 both in the Indopacific and in the Atlantic; this species has, indeed, been taken by the 

 „Challenger" near the island of Tristan da Cunha and near the Philippines, while it has also 

 been recorded from several localities off the west coast of Central America. Hemip. Carpenteri 

 W.-Mas. inhabits the Arabian Sea and the Bay of Bengal. Hemip. Triton Fax., finally, occurs 

 also on the west coast of Central America, but this species is perhaps identical with Hemip. 

 Carpenteri. Of the four species in which the 3'^'^ abdominal somite is unarmed, only one, viz. 

 Hemip. speciosns Sp. Bate, occurs in the Atlantic and was taken East of Buenos Ayres. Hemip. 

 crassipes W.-Mas. has been obtained in the /\rabian Sea, in the Gulf of Manar, in the Bay 

 of Bengal and in the Andaman Sea; it has also been taken by the "Siboga" North of Sumbawa 



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