MARINE GAMMARIDEAN AMPHIPODA 357 



Parawaldeckia Stebbing 



Parawaldeckia Stebbing, 1910. 



Type-species: Nannonyx thomsoni Stebbing, 1906 (monotypy). 



Article 5 of male antenna 2 slightly dilated and longer than article 

 4; [prebiiccal area and mandible unknown but presumably similar to 

 Waldeckia]; gnathopod 1 simple, articles 5 and 6 equal; uropod 3 

 short, outer ramus not longer than peduncle, peduncle sublamelliform, 

 inner ramus scarcely half as long as outer; telson entire or sUghtly 

 emarginate. Species: 2,* antiboreal, Uttoral. 



*Parawaldeckia kidderi (Smith). — Generic diagnosis: to some extent mouth- 

 parts bundled conically, upper lip and epistome confluent, slightly convex ante- 

 riorly, lacking sinus; mandibular molar conical, unridged, distally setose, palp 

 attached very proximally; gnathopod 1 simple; uropod 3 with vestigial inner 

 ramus; telson short, entire. Diagnosis based on Monod (1926) and cotypes 

 examined in U.S. National Museum; general appearance of cotypes, without 

 dissection, similar to Monod's figures and not to concepts of Chilton (1909, 

 1921), Stephensen (1927), and Tattersall (1922) in the following characters: 

 general appearance including coxae and pleon, (antenna 2 slightly shorter than 

 shown by Monod), prebuccal region, telson, and uropod 3. 



Paronesimoides Pirlot 



Paronesimoides Pirlot, 1933a. 



Type-species: P. lignivorus Pirlot, 1933a (original designation). 



Apparently upper Hp projecting and dominating epistome; man- 

 dibular molar not strongly produced, setulose, poorly ridged, palp 

 attached at proximal end of molar; gnathopod 1 subchelate, palm 

 transverse, article 6 slightly enlarged and much larger than article 

 5; uropod 3 very small, outer ramus 2-articulate, equal to peduncle, 

 inner ramus reduced to a minute spiniform process; telson short, 

 entire; articles 1 and 2 of flagellum of antenna 1 equal in length 

 (Onesimoides). Species: 1, Indonesia, abyssal. 



Paronesimus Stebbing 



Paronesimus Stebbing, 1894; 1906. 



Type-species: P. barentsi Stebbing, 1894 (monotypy). See 

 Gurjanova, 1962. 



[Upper lip and epistome not described, presumably like Onisimus]; 

 mandibular molar small, weakly ridged, palp attached level with 

 molar; gnathopod 1 with very small palm, appearing simple, articles 

 5 and 6 subequal; telson of medium length, cleft about halfway. 

 Very close to Hippomedon. See Paracentromedon. Species: 2, arctic, 

 littoral. 



