368 Mr. E. J. Miers on Crustacea from 
regarding P. affinis (barbatus) of De Haan as identical with 
P. velutinus. 
The range of this species having now been ascertained to 
extend to the West-African coast, it is more than ever pro- 
bable that P. pubescens, Stimpson, from St. Thomas (West 
Indies), which is scarcely to be distinguished by the author’s 
description, will have to be united with P. velutinus. Stimp- 
son mentions, however, but a single pair of lateral caudal 
spines. 
Mr. Spence Bate has described several species from New 
Guinea, the Philippines, and Japan, which (in the short 
diagnoses published) are separated from one another and from 
P. velutinus by characters largely drawn from the rostrum and 
postabdomen. I may add, therefore, the following particulars 
respecting the Gorean examples and others in the Museum 
collection :—Rostrum nearly straight, sharp, slightly ascending 
from the base, and armed with from seven to ten spines on its 
upper margin, besides the gastric spine (the number of spines 
fewest in the smallest specimens). Second to sixth segments 
of the postabdomen carinated, the carina terminating on the 
last segment in a small tooth or spine; terminal segment 
longitudinally suleated above and terminating in a strong 
spine and with four pairs of lateral spines, of which the 
proximal pair are small and remote from the rest. These are 
wanting in some specimens, and may have been disarticulated 
and lost. A similar arrangement of the spines is evident in 
two specimens from the Gulf of Suez in the Museum collec- 
tion; in a specimen from the Japanese seas the proximal pair 
of spines are wanting, and in one from the Australian seas the 
distal pair. In another specimen from Shark Bay, West 
Australia, the spines correspond in number and development 
with the Gorean specimens. In all of the above there is but 
little variation in the form of the rostrum and number of its 
teeth and of the postabdominal carina; and in all the body 
is more or less densely clothed with a short scabrous pubes- 
cence. In but few of the specimens [ have seen are the 
external genital appendages fully developed. 
STOMATOPODA. 
Lystosquilla (Coronis) acanthocarpus, var. septemspinosa. 
(Pl. XVI. fig. 7.) 
I thus designate a small female example in the collection 
that agrees with examples of C. acanthocarpus, from Port 
Essington, North Australia, and from Penang, in the form of 
