114 



segmented short peduncle and four-segmented flagelJum consisting of 

 a broadly conical proximal segment and three small distal segments. 

 Antennae II are developed as in the family Lanceolidae, or reduced, but 

 to a lesser degree than in the family Chuneolidae. 



The mandibles have a broad cutting edge; the left mandible has a 

 small accessory plate; the 3rd segment of the mandibular palp is shorter 

 than the 2nd. The inner lobe of maxillae I is broad; the palp is well devel- 

 oped and longer than the outer lobe. Maxillae II have narrow lobes of 

 99 equal length. The maxillipeds have a large outer lobes armed with strong 

 setae; the inner lobes are separate, well developed or rudimentary. The 

 coxal plates are free. Pereopods I and II have distally broadened 5th and 

 6th segments. Pereopods III-VI lack retractile claws but pseudochelae, 

 variably developed, may be present on pereopods III-V. The rami of the 

 uropods are free. The telson is short and triangular. 



The family Microphasmidae is undoubtedly close to the Lanceolidae. 

 It includes three genera. 



KEY TO GENERA OF FAMILY MICROPHASMIDAE 



1 . All pereopods simple or pereopods V may have a weakly developed 

 pseudochela with a long palmate margin. Antennae II well developed 

 and almost equal in length to antennae I. .... 1. Mimonecteola Wolt. 



— At least pereopods V with broadened 6th segment and well- 

 developed pseudochela. Antennae II reduced and shorter than small 

 antennae 1 2. 



2. Only pereopods V with broadened 6th segment and well-developed 

 pseudochela 3. Microphasmoides Vinogr. 



— Pereopods III-V with broadened 6th segment and well-developed 

 pseudochela 2. Microphasma Wolt. 



1. Genus Mimonecteola Woltereck, 1909 



Woltereck, 1909: 153. 



The body is smooth, lanceolid in shape; the pereon is slightly con- 

 vex, more so in females than in males. The head is shorter than somite 

 I of the pereon, with a visor-shaped projecting frons. The eyes are small 

 and reniform. 



Antennae I are longer than the first two but shorter than the first 

 three somites of the pereon. In females the proximal segment of the 

 flagellum is narrowly conical, and 3-5 times longer than the peduncle. 

 In sexually mature males the proximal segment of the flagellum is highly 

 pubescent; it is relatively shorter and broader than in females and forms 

 a lobe in the proximal part which covers the 2nd and 3rd segments of 

 the peduncle. Antennae II are thin, in females equal to or longer than 



