I CHTH YOLO QIC A L Ml SC ELLA N EA . 
29 
I have seen is No. I. 328 in the Queensland Museum. It has a carapace of 
108 mm. and the whole fish must have been over 6 inches long ; unfortunately 
the tail is broken. It has sixteen median ventral scutes and smooth, starry 
sides, and came from Moreton Bay. 
A specimen labelled Papua (Qld. Mus. I. 327) is about the same size as 
the type, having a carapace of 71 mm., but has rougher scutes and no supra- 
orbital spines ; otherwise it is identical. 
Large series of young specimens from New South Wales in the 
Australian Museum have characters similar to those of the Moreton Bay form 
but are slightly more elevated dorsal lv, more rugose on the sides, and some 
have milkv-blue spots on caudal peduncle and posterior half of body. Spine 
on each lateral ridge below eye present in all but the largest specimens. There is 
also a median gibbosity before the dorsal fin and behind the spines which is 
much more pronounced than in any Queensland specimen examined. A large 
specimen from Port Jackson (Austr. Mus. IA. 4591 : carapace 105 mm., 
standard length 123) differs from Ogilby ’s type in being much more rugose all 
over and has slightly smaller eye, lower fins, and more convex post-anal margin 
of carapace. In very small specimens, notably in a series from Bondi, New 
South Wales (Austr. Mus. A. 5537-5542), the belly is rounded and the lateral 
ridges point downwards and outwards. 
Prom Lord Howe Island, the Australian Museum has two specimens. 
One (I. 7862) with a carapace of 56 mm. is similar to New South Wales 
specimens, but the other (/. 4360) is of interest because of its large size. 
This specimen has a carapace of 152 mm. and a total length of nearly 9 
inches. All the spines on the ridges are obsolete and the depth is about half 
the length of the carapace. Width 70 mm., orbit 20, interorbital 24. 
Triorus reipublicce (Ogilby) resembles T. iritropis Snyder 91 but differs in 
having much fewer rugosities, winch are chiefly restricted to the head. The 
snout of T. reipublicce is more acutely pointed with the profile straight rather 
than convex and there is generally no spine on lateral ridge below eye. The 
opening of the carapace surrounding the mouth and the size of the gill-slits 
also appear to differ from those shown in Snyder’s figure. 
Triorus reipubliae is probably pelagic, at least when young. One 
■specimen was found in the stomach of a snapper trawled off Port Stephens, 
New South Wales. The species ranges from New Guinea and Queensland to 
New South Wales and Lord Howe Island. 
Triorus pyxis sp. nov. 
In addition to the series of T. reipublicce (Ogilby), in the Australian 
Museum, there are tw r o specimens of a new species from Western Australia. 
91 Snyder, Proc. TJ. S. Nat. Mus. xi, May 26, 1911, p. 535, as Lactophrys. Misaki, Japan. 
Type later figured in vol. xlii, 1912, p. 424, pi. ftv, fig. 1. 
