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Sea of the Antilles. Parap. Jissiiriis (Sp. Bate) is distributed from New Britain, the Philippines 

 and the Arafura Sea as far as the east coast of British India and has been captured by the 

 "Siboga" at four different stations on the coasts of Timor, Flores and Sumbawa. Parap. hivesti- 

 gatoris Ale. & And. occurs in the Bay of Bengal and was taken by the "Siboga" off the Kei 

 Islands. The third indopacific species is Parap. longipcs Alcock, an inhabitant both of the west 

 and of the east coast of British India and collected by the "Siboga" in the Java Sea and off the 

 coast of Timor. The last species, finally, Parap. rectacutiis (Sp. Bate), has the same distribution as 

 Parap. Jiss7irus, ranging from the Fiji Islands and the Philippines as far as the Bay of Bengal and 

 the east coast of India; it was collected by this e.xpedition in the Sea between Celebes, Java and 

 Sumbawa. The four known indopacific species are all inhabitants also of the Indian Archipelago. 



The atlantic representatives of this genus are rarely found at a depth of 500 meter 

 {Parap. longirostris), but generally occur in more shallow water. The mediterranean species, 

 indeed, has been captured not only at a depth of 500 meter, but also between 80 and 100 m. 

 and even between 40 and 75 m.; Parap. polihis is recorded not only from 142 fathoms, but also 

 from between 31 and 34 fathoms. Parap. paradox7is was found in water of 84 fathoms and 

 Parap. aiuericamis at depths of 116, 191 and 220 — 225 fathoms. Parap. Jissiirus was taken 

 by the "Siboga" at a depth of 274 m., but also in water of i i 2 m. and the same species was 

 collected off the Ganjam coast at a depth of 45 fathoms. Parap. longipcs is not known from 

 water deeper than 88 meter and Parap. Investigatoris occurs at 133 fathoms, but also between 

 370 and 419 fathoms. Parap. rectacuttcs, finally, was likewise observed between 370 and 419 

 fathoms, but was also taken by the "Challenger" in water of 95 fathoms. 



Concerning the indopacific species I wish still to observe i" that in Parap. rectactdus 

 all the pereiopods are provided with very small exopods and that there is an epipod on 

 the legs of the 3''^ pair; 2'' that the three other species bear no exopods on any of the five 

 thoracic legs and no epipod on those of the 3'^'^ pair. The fact that there are no epipods on 

 the 3'''^ legs has not been mentioned in Alcock's paper on the Prawns of the Peneus-grow\y, 

 published in 1906, though this character was already recorded, in a previous paper, by Ai.cock 

 and Anderson, namely in: Journal Asiatic Soc. Bengal, Vol. LXIII, Part II, N" 3, 1894, p. 144, 

 at least for one of the three species, viz. for Parap. Investigatoris^ which in that paper was 

 wrongly mentioned as Parap. Jissiirits. When we moreover take into consideration that the 

 carapace of Parap. rectacnfiis lacks the sutures observed in the three other species and also 

 the characters of the telson and of the antennular flagella, then the question arises whether 

 this species ought really to be included with the three others in the same genus. I don't like, 

 however, to give an opinion on this subject, because I had no opportunity to study the atlantic 

 species of Parapenaeus. 



In his important work "Crustaces decapodes (Peneides) provenant des campagnes de 

 THirondelle et de la Princesse-Alice", published in 1908, Professor Bouvier remarks, p. 102, 

 that the genus Parapenae7is is represented by about iS species, which, unfortunately, are not 

 enumerat-ed, excepting P. akayebi Rathb., P. megalops Smith and three species that are considered 

 also by me to appertain to the genus Parapenaetis. I had no opportunity to study P. megalops, 

 which, in this Report, is referred to the genus Pcnacopsis and I am unknown with the other 



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