On Fishes from Southern Mexico. 361 



similar arm in a bay mucli nearer to Galway. That arm he 

 subsequently kindly sent me. 



3. When at the Biological Station at Plymouth in the 

 autumn of 1903 I saw a number of fine and perfect specimens 

 which had been procured and some of these I purchased. The 

 species had been found to be not uncommon in crevices of the 

 red sandstone, '' especially in old Pholadidia crypts '^ in 15- 

 25 fathoms on Mewstone Ledge and Stoke Point Grrounds. 

 It would thus appear to be a lover of hard ground and a 

 cliiiger to rocks, which is what we might have been led to 

 expect from its sturdy build and short and strong arm-spines — 

 reminding us of species of similar habit, such as the genera 

 Ophiopholis and Ophiactis. If, therefore, the specimens 

 dredged by us at Birterbuy were, as we imagined, on sand, 

 they had probably crept out temporarily from the rocks 

 close by. 



4. I found the Ophiopsila in a fourth locality in the spring 

 of last year, having dredged a portion of an arm outside 

 Dartmouth Harbour. 



I regard Ophiopsila aranea, Forbes, as a distinct species. 

 It is of smaller size, and, besides other differences, the arm- 

 spines are both fewer in number and more slender. The 

 species inhabits the .^gean and Mediterranean Seas. 



XLI. — A Collection of Fishes made hy Dr. H. Gadow in 

 Southern Mexico. By C. Tate Regan, B.A. 



The collection of fishes made by Dr. H. Gadow, F.R.S., in 

 Southern Mexico in the summer of 1903 was brought to the 

 British Museum by him and worked out by me in tlie autumn 

 of that year. Publication of the results obtained was held 

 back in the expectation that another collection would be 

 received from Dr. Gadow^ as the result of his visit to Mexico 

 in 1901:. Unfortunately, however, the season proved to be 

 unfavourable for fish collecting during this second visit. 



The Cichlids collected by Dr. Gadow have already been 

 dealt with in my revision of the genus Gichlosoma. Tiiey 

 include examples of a new species, C. Qadovii^ and of two 

 others, C. Eigenmanni^ Meek, and G. heterodontus, Pellegr., 

 new to the British Museum. Also new to the British 

 Museum are specimens of Plaiypcecilus Nelsoni, Ganibusia 

 fasciata, Heterandria Lutzi, and Fomadasys Teniplei, species 

 described by Dr. Meek in his recent work on the fishes of 

 Mexico. 



Ann. tfc May. N. Hist. Ser. 7. Vol. xvi. 21 



