R. DOUGLAS LAURIE—BRACHYURA. 407 
Reports on the Martine Biowoey of the SuDANESE RED Sura.—XXI. On the 
Bracuyura. By R. Doueias Lauriz, M.A. (Oxon:), Lecturer in 
Embryology and Senior Demonstrator in Zoology in the University 
of Liverpool. (Communicated by Prof. W. A. Herpmay, F.R.S., 
F.L.S.) 
(PLATES 42-45 and 5 Text-tigures.) 
[Read 18th June, 1914. | 
THE collection comprises 65 species, of which 1, Chlorodopsis arabica, is new 
to science and 8 are new to the Red Sea. The latter are Cryptodromia 
gilesti (Ale.), Notopus dorsipes (Fabr.), two varieties of Lambrus (Aulaco- 
lambrus) hoplonotus, Ad. & Wh., Chlorodopsis arabica, Laurie, n. sp., 
Actumnus setifer (de Haan), var. tomentosus, Dana, Litocheira integra (Miers), 
Macrophthalmus graefei, A. M.-Edw., and Palicus whiter (Miers). In 
addition, the very decided variety cytherea of Chlorodiella mger (Forsk.) 
is new to the Red Sea, and should perhaps be reinstated in the specific rank 
originally given to it by Dana. 
Of the genera named above, 2 are new to the Red Sea fauna, namely, 
Litocheira and Notopus, and the latter is the first recorded Red Sea 
representative of the family Raninide. 
The material in the collection helps in the elucidation of the following, in 
addition to other points of interest :— 
Thalamita chaptalii and T. poissonii, both of Audouin and Savigny, 1826, 
are easily separable species. 
Lambrus (Aulacolambrus) hoplonotus, Ad. & Wh., will, I think, be found 
to comprise at least two species. 
Macrophthalmus inermis, A. M.-Kdw., is, I believe, incorrectly considered 
by Alcock to be a synonym of J/. converus, Stm. See note under M. gracjfei, 
A. M.-Edw. 
Ophthalmias curvirostris (A. M.-Edw.) is, I believe, quite a good species, 
easily distinguishable from O. cervicornis (Herbst). In addition to a series of 
other points of difference, I eall attention to the figures which I give of the 
external maxillipedes in the two forms. There isin my mind a doubt as to 
the correctness of the single record of O. cervicornis from the Red Sea. 
My specimens confirm Nobili’s suggestion that /otilla aginis, Ale., 1900, 
is a synonym of D. sulcata (Forsk., 1775). I find that the supposed 
distinction was in part based upon a sex-difference. 
Chlorodopsis wood-masoni, Alc., 1898, is a doubtful synonym of C. spinipes 
(Hell., 1861). 
