Family PROCESSIDAE. 



34. Processa aequimana (Paulson). PI. IV, fig. 19 — ^9 f- 



Nika aequimana O. Paulson, Izslyedovaniya Rakoobraznuikh Krasnagho Morya. Chast. I. 



Kiev, 1875, p. 97, PI. XIV, figs. 6— 6a. 

 Processa aequimana G. Nobili, in: Annal. Scienc. Nat. 9 e Sér. Zool. T. IV, 1906, p. 79 



(translation of PAULSON's description). 



Stat. 181. September 5/1 1. Ambon-anchorage. 54 m. Bottom mud, sand and coral. 6 specimens. 



In my work, issued January 1920, on the Caridae of the Siboga Expedition four pro- 

 bably different species of this genus were described and figured by me (p. 203, PI. XVII, 

 fig. 52 — 52/) under the name of Processa sp. ; the adult female from Stat. 193 was the first, 

 which I am now inclined to identify with Proc. processa (Bate), the young male from Stat. 4 

 and the two young males from Stat. 261 were the second, the egg-bearing female from Stat. 4 

 and the specimen from Stat. 104 the third, the young female from Stat. 154, finally, the fourth 

 species. The 6 specimens from Amboina now apparently belong to the third of these species 

 and are now referred to Proc. aequimana (Paulson) from the Red Sea ; Paulson's work is in 

 my possession, though only the plates can be utilized by me, but the late Dr. Nobili has given 

 (1. c.) a translation of the russian description. This species now differs from the first of the four 

 described by me, besides by other characters, by the stouter shape of the antennular peduncle 

 and of the peraeopods of the i st pair, by the smaller number of carpal joints of the 2 nd legs 

 and by a smaller size ; it differs from the second and the fourth by the anterior pair of dorso- 

 lateral spinules of the telson being placed more forward, from the second moreover by the 

 less stout shape of the chela of the 2 1,d legs, from the fourth, finally, by the pleura of the 

 5 th abdominal somite being unarmed. 



Three of the 6 specimens are egg-bearing and of the same size as the fourth, that may 

 be a male, the two last specimens are of a smaller size. This fourth specimen shall now be 

 described in detail. It proved to be 14,7 mm. long, the carapace 4,4 mm. long and 2,25 mm. 

 high, the abdomen 10,3 mm. long. The rostrum (Fig. 19, iga) is 1,08 mm. long, one-third of the 

 length of the carapace and extends horizontally forward to the end of the eye-peduncles ; viewed 

 from above, the rostrum agrees with the figures 52 and 52 j (1. c), being styliform except at the 

 base, in a lateral view it gradually narrows to near the bidentate tip, the height in the middle 

 being l /, t the length ; of the two acute points, in which the rostrum terminates and that are slightly 



