GAIVIMARIDEAN AMPHIPODA 



91 



Valettiopsis Holmes 



V alettiopsis dentatus Holmes 



Figures 42, 43 



Valettiopsis dentatus Holmes, 1908. pp. 495-490, figs. 5, 6. — Gurjanova, 1962, p. 

 344, fig. 115.— Hurley, 1903, p. 149. 



Material.— USNM Ace. No. 247045, Santa Monica Bay, Calif., hag- 

 fish trap, 183 m (11). 



Remarks. — New drawings are presented here because Holmes did 

 not completely figure this taxon ; it is the type of the genus and speci- 

 mens in excellent condition are available. 



The upper lip of this species is extremely elongated dorsoventrally, 

 and the incision separating it from the epistome is hidden from lateral 

 view by the base of antenna 2; a drawing of this from the right 

 ventrolateral aspect is shown in fig. 42A. 



Dactyls of pereopods 1-5 each liave a subdistal slit, one or two 

 setules and a presumed internal duct leading to the slit. The dactyl 

 of pereopod 3 on the left side of the figured specimen has a multi- 

 spinose apex, which is not typical of other specimens. 



Figure 42. — Valettiopsis dentatus Holmes, male, 8.6 mm, Santa Monica Bay, Calif., 183 m: 

 a, mandible; b, lower lip; c, outer plate of maxilla I, dorsal; d, upper lip from anterior 

 view showing asymmetric dorsolateral notch; e, maxilla 1, ventral;/, apex of right man- 

 dible. Male, 8.9 mm: g, maxilla 2; h, lower lip; i, maxilliped. 

 242-332—67 7 



