169 



General distribution: The typical Hcleroc. ensifer A. M.-Edw. was discovered off 

 the island of Barbados, West-Indies, was taken by the "Blake" off the islands of St. Kitts, 

 Montserrat and Grenada and, according to S. I. Smith, occurs also off the coast of Carolina; 

 it is furthermore known from the Hawaiian Islands, where this species is one of the most 

 abundant of deep-water shrimps (Rathbun), from Xew Britain (Borradaile), from between the 

 Philippine Islands and Borneo (Spence Bate) and from Sagami Bay, Japan (Balss). The 



variety parvispina is still only known from the Indian Archipelago. 



7. Heierocarpus Sibogae de Man. PI. XIY, Fig. 42 — 42/. 



Hcterocarpus sibogae J. G. de Man, in: Zoologische Mededeelingen, uitgegeven vanwege 's Rijks 

 Museum van Natuurlijke Historie te Leiden, Dl. III, Afl. 4, 1917, p. 2S3. 



Hcterocarpus ensifer A. Alcock, Descript. Catal. Indian Deep-Sea Crustacea, Calcutta, 1901, 

 p. 107. 



Stat. 12. March 14. 7°i5'S., U5°I5'.6E. Bali Sea. 289 m. Bottom mud and broken shells. 



10 adult specimens, viz. 4 males and 6 females, 5 of which are ova-bearing. 

 Stat. 38. April 1. 7 35'.4 S., U7°28'.6E. Bali Sea. 521 m. Bottom coral. 9 young specimens. 

 Stat. 74. June 8. 5°3'.5S., H9°o'E. Southern entrance of Strait of Makassar. 450 m. Bottom 



Globigerina ooze. 6 specimens, viz. 1 adult male, 1 ova-bearing female and 4 



young individuals. 

 Stat. 139. Aug. 4. O 1 1' S., I27°25' E. North of Batjan. 397 m. Bottom mud, stones and coral. 



3 adult males and 2 ova-bearing females. 

 Stat. 212. Sept. 26. 5°54'.5S., 120° 19'. 2 E. West of Saleyer. 462 m. 2 adult females, one of 



which with eggs. 

 Stat. 256. Dec. 11. 5°2Ó'.6S., I32°32'.5E. Kei-islands. 397 m. Bottom greyish green mud. 



8 adult specimens, viz. 3 males and 5 females, 3 of which are egg-bearing. 

 Stat. 262. Dec. 18. 5°53'.8S., I32°48'.8E. Kei-islands. 560111. Bottom solid bluish grey mud, 



upper layer more liquid and brown mud. 2 adult ova-bearing females. 

 Stat. 316. Febr. 19, 1900. 7°i9'.4S., Ei6°49'.5E. Bali Sea. 538 m. 1 ova-bearing female. 



This interesting new Hcterocarpus, of which no less than 42 specimens were collected, 

 both adult and young, much resembles Hcleroc. ensifer A. M.-Edw. (A. Milne-Edwards, Recueil 

 de Figures de Crustacés nouveaux ou peu connus, 1883, PI. 32 and M. J. Rathbun, in: U.S. 

 Fish Commission Buil. for 1903, Part III, Wash. 1906, p. 917, PI. XXI, fig. 7), as regards the 

 shape of the carapace and its carination, but is easily distinguished by the sharp carinae 

 of the i st and 2 nd abdominal ter ga. 



Heierocarpus Sibogae attains the length of 140 mm., both male and female, while the carapace 

 and rostrum combined are but little shorter than the abdomen. In the adult species the rostrum, 

 measured in a straight line from the orbital margin to the apex, appears as a rule one-fifth to 

 almost one-third shorter than the carapace between the orbital and the posterior margin, 

 rarely of equal length, though never longer than the carapace (Table of Measurements) ; in the 

 adult female from Stat. 316 which is already provided with eggs, though not vet full-grown, as 

 it is only 1 10 mm. long, the rostrum is 2,5 mm. longer than the carapace and in still younger 

 specimens, as in those from the Stations 38 and 74, the rostrum is distinctly, to about one- 

 third, longer than it. The postrostral crest, which commences near the posterior margin of the 

 carapace, is more or less curved, while the upper margin of the rostrum proper runs first 



SIEOGA- EXPEDITIE XXXIX ö 3 . 22 



