217 
regards provénance, and a third from the mouth parts of Pali- 
nurus japonicus; Oahu (Reinhardt, S. S. "Galathea”). 
Dichelaspis hoeki, Stebbing. 
Dichelaspis hoeki and nen Stebbing, Ann. Mag. Nat. Hist. (vi), xv, 
pp: 18719 Li (1895 
Dichelaspis edlsleniteg and occidentalis, Steenstrup, MS. 
The differences noted byStebbing as regards both the anatomy 
and the shell of the specimens he examined exist in those before 
me; but I do not find that they are correlated one with the other 
in this large series. There is, therefore, no reason to regard the 
two forms as more than different phases of the same species. 
The collection includes three sets of specimens, all from the 
West Indies. The following are the particulars recorded as regards 
them: 
mm 
In Scyllarus aeguinoctialis; West Indies (D. aequinoctialis, 
Steenstrup, MS.). 
St. Croix (Ørsted) (D. aff. Warwickii Gray, Steenstrup, MS.). 
From the maxillipedes of Ihacus guttatus; Havannah (D. occi- 
dentalis, Steenstrup, MS.). 
re 
Dichelaspis tridens (C. W. Aurivillius). 
Dichelaspis tridens, Annandale, Mem. Ind. Mus., ii, p. 107, pl. vii, figs 1, 
2 (1909). 
Several specimens of this common species on the gills of 
Thenus orientalis, one of its usual hosts, from Gaspar Straits, Malay 
Årchipelago (Jensen). 
Dichelaspis aurivillii, Gruvel. 
Several specimens from the mouth parts of Scyllarus aequi- 
noctialis; St. Jan (Ørsted). . . 
Dichelaspis forresti (Stebbing). 
Several specimens from Palinurus americanus; St. Jan, West 
Indies (Ørsted). 
Vidensk. Meddel. fra den naturh. Foren. 1910. 15 
