60 Some Crustacea of Natal 
tinge; the legs are marbled brown and yellow in their proximal parts, 
but distally they have dark blue markings such as Herbst’s figure 
shows for almost the whole extent; the fingers have red spines. 
Milne Edwards ascribes to ornatus alternating rings of green and 
yellow on the limbs. Fabricius says that the legs are all blue 
fasciated with white, which Ortmann supposes to mean that they have 
longitudinal white stripes, but that I think is a misunderstanding of 
the term albofasciatus. Fabricius gives the general colour as green 
with the sides spotted with white. Milne Edwards expands this into 
green with little whitish blotchey on the thorax, and marblings on the 
abdomen. Mr. Bell Marley writes as above that the segments (no 
doubt of the pleon) are sage green, which is no longer applicable to 
the first five segments, these being pale brown, with a band of dark 
brown crossing each of the last four of them, each having a narrow 
oblique bluish green stripe on either side, followed by an oval cream- 
coloured spot. The frontal horns and surrounding parts of the 
carapace have elegant zebra markings, in which also the eyes partake. 
Varieties of tint assigned in different descriptions and illustrations are 
likely to depend more on the condition of the specimens examined 
than on any material variation in the living forms. 
The specimen here described, a female, measures 363 mm. (14} 
inches) from the front of the plate which carries the first antenne to 
the end of the telson, or 248 mm. to that margin from the front of 
the ophthalmic segment. The third perzeopods are the longest. 
Mr. Bell Marley considers the species rare, preferring quiet water, 
generally deep water near sand-banks. It takes fish bait, and ‘“‘ when 
landed it makes a great disturbance and flounders about with its tail, 
shooting backwards and forwards its feelers in angry surprise.” 
Trine PEN AIDEA. 
Famity PEN #ID A. 
Genus PEN AUS, Fabricius, 1798. 
See Ann. Durban Mus,., vol. 1, pt. 5, p. 441. 
Prenzxus JAponicus, Bate. 
The synonymy from 1888 to 1906 is supplied in Dr. de Man’s 
valuable work on the Penzidve of the Siboga-Expeditie, Mon. 39a, p. 
